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		<id>https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=Talk%3A2829%3A_Iceberg_Efficiency</id>
		<title>Talk:2829: Iceberg Efficiency - Revision history</title>
		<link rel="self" type="application/atom+xml" href="https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=Talk%3A2829%3A_Iceberg_Efficiency"/>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;action=history"/>
		<updated>2026-04-19T18:10:39Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
		<generator>MediaWiki 1.30.0</generator>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323996&amp;oldid=prev</id>
		<title>Certified nqh at 23:18, 19 September 2023</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323996&amp;oldid=prev"/>
				<updated>2023-09-19T23:18:18Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 23:18, 19 September 2023&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l40&quot; &gt;Line 40:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 40:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;''&amp;quot;This idea of producing a man-made flying iceberg for the sole purpose of endangering cruise liners, would likely be seen as preposterous&amp;quot;''. In fact, that would be an perfect plot for an upcoming 'James Bond' film, as an high percentage of the Villain's plots&amp;#160; in the franchise are considered preposterous: [https://www.ranker.com/list/bond-villain-plans-ranked/mike-rothschild/ Every Bond Villain Plan, Ranked by Insanity] [[User:These Are Not The Comments You Are Looking For|These Are Not The Comments You Are Looking For]] ([[User talk:These Are Not The Comments You Are Looking For|talk]]) 18:53, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;''&amp;quot;This idea of producing a man-made flying iceberg for the sole purpose of endangering cruise liners, would likely be seen as preposterous&amp;quot;''. In fact, that would be an perfect plot for an upcoming 'James Bond' film, as an high percentage of the Villain's plots&amp;#160; in the franchise are considered preposterous: [https://www.ranker.com/list/bond-villain-plans-ranked/mike-rothschild/ Every Bond Villain Plan, Ranked by Insanity] [[User:These Are Not The Comments You Are Looking For|These Are Not The Comments You Are Looking For]] ([[User talk:These Are Not The Comments You Are Looking For|talk]]) 18:53, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:Disappointed that that link doesn't bother to include the ''other'' Casino Royale (with David Niven, although the rather sane/'sorta-faithful' Barry Nelson version predated even that), which has in-universe insanity in spades (never mind actual production-insanity!), including an actual flying 'UFO' (used for kidnapping, not for torpedoing). [[Special:Contributions/162.158.74.72|162.158.74.72]] 21:15, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:Disappointed that that link doesn't bother to include the ''other'' Casino Royale (with David Niven, although the rather sane/'sorta-faithful' Barry Nelson version predated even that), which has in-universe insanity in spades (never mind actual production-insanity!), including an actual flying 'UFO' (used for kidnapping, not for torpedoing). [[Special:Contributions/162.158.74.72|162.158.74.72]] 21:15, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;i'm removing the incomplete tag on the transcript since nobody's touched it for 4 days [[User:Certified_nqh|Me]]&amp;lt;sup&amp;gt;&amp;amp;#91;[[285: Wikipedian Protester|''citation needed'']]&amp;amp;#93;[[Category:Pages using the &amp;quot;citation needed&amp;quot; template]]&amp;lt;/sup&amp;gt; 23:18, 19 September 2023 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Certified nqh</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323930&amp;oldid=prev</id>
		<title>BunsenH at 16:19, 18 September 2023</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323930&amp;oldid=prev"/>
				<updated>2023-09-18T16:19:54Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 16:19, 18 September 2023&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot; &gt;Line 19:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 19:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::::Indeed, now that I look specifically for aerogel + water, I see that they're extremely useful for their selectivity as a filter material, with [https://ars.els-cdn.com/content/image/1-s2.0-S0959652621038907-ga1.jpg hydrophilic &amp;amp; hydrophobic variants] being just the tip of the iceberg (so to speak). ([https://www.sciencedirect.com/science/article/abs/pii/S0959652621038907]) I'm amazed that a material that's almost entirely hollow, can also be open-celled &amp;amp; yet still obstruct gas flow enough for an inch of it to stop an acetylene torch cold (so to speak!)! The ''only'' closed-cell aerogels I find reference to, use plastics to seal them up; the aerogels are just a lattice... This is directly at odds with my initial impression of aerogels as basically being a hard-set silica or carbon foam. Once set, it really is structurally more like a sponge than a foam? Thanks for the enlightenment; this info has led me to a bunch of fascinating reading on a subject I thought I'd grown bored of hearing about!&amp;#160;  &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::::Indeed, now that I look specifically for aerogel + water, I see that they're extremely useful for their selectivity as a filter material, with [https://ars.els-cdn.com/content/image/1-s2.0-S0959652621038907-ga1.jpg hydrophilic &amp;amp; hydrophobic variants] being just the tip of the iceberg (so to speak). ([https://www.sciencedirect.com/science/article/abs/pii/S0959652621038907]) I'm amazed that a material that's almost entirely hollow, can also be open-celled &amp;amp; yet still obstruct gas flow enough for an inch of it to stop an acetylene torch cold (so to speak!)! The ''only'' closed-cell aerogels I find reference to, use plastics to seal them up; the aerogels are just a lattice... This is directly at odds with my initial impression of aerogels as basically being a hard-set silica or carbon foam. Once set, it really is structurally more like a sponge than a foam? Thanks for the enlightenment; this info has led me to a bunch of fascinating reading on a subject I thought I'd grown bored of hearing about!&amp;#160;  &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 22:25, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 22:25, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::::::Thank you for that link; that's going to make for some interesting reading. There's a lot more to the field than I could have imagined. Without having gone to the source papers yet, I can make guesses about some of the chemistry: &amp;quot;if I wanted to use aerogels to selectively capture heavy metals, I'd do it with sulfide groups&amp;quot;. I'll see how my guesses pan out. :-) I admit to some skepticism about trying to do some of the extractions on a large scale rather than a bench scale. Trying to do environmental remediation, as implied, would require ''large'' amounts of expensive and somewhat fragile gel material. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 16:06, 18 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::::::Thank you for that link; that's going to make for some interesting reading. There's a lot more to the field than I could have imagined. Without having gone to the source papers yet, I can make guesses about some of the chemistry: &amp;quot;if I wanted to use aerogels to selectively capture heavy metals, I'd do it with sulfide groups&amp;quot;. I'll see how my guesses pan out. :-) I admit to some skepticism about trying to do some of the extractions on a large scale rather than a bench scale. Trying to do environmental remediation, as implied, would require ''large'' amounts of expensive and somewhat fragile gel material.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;::::::EDIT: As far as I'm aware (and again, I'm way out of date), aerogels pretty much have to have an open structure in order for the escape of the solvent/gases that are evolved/used in their manufacture.&amp;#160; &lt;/ins&gt;[[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 16:06, 18 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Why not filling the aerogel with hydrogen? You might save for torpedoes then. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 21:24, 15 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Why not filling the aerogel with hydrogen? You might save for torpedoes then. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 21:24, 15 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>BunsenH</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323928&amp;oldid=prev</id>
		<title>BunsenH at 16:06, 18 September 2023</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323928&amp;oldid=prev"/>
				<updated>2023-09-18T16:06:05Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 16:06, 18 September 2023&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot; &gt;Line 19:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 19:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::::Indeed, now that I look specifically for aerogel + water, I see that they're extremely useful for their selectivity as a filter material, with [https://ars.els-cdn.com/content/image/1-s2.0-S0959652621038907-ga1.jpg hydrophilic &amp;amp; hydrophobic variants] being just the tip of the iceberg (so to speak). ([https://www.sciencedirect.com/science/article/abs/pii/S0959652621038907]) I'm amazed that a material that's almost entirely hollow, can also be open-celled &amp;amp; yet still obstruct gas flow enough for an inch of it to stop an acetylene torch cold (so to speak!)! The ''only'' closed-cell aerogels I find reference to, use plastics to seal them up; the aerogels are just a lattice... This is directly at odds with my initial impression of aerogels as basically being a hard-set silica or carbon foam. Once set, it really is structurally more like a sponge than a foam? Thanks for the enlightenment; this info has led me to a bunch of fascinating reading on a subject I thought I'd grown bored of hearing about!&amp;#160;  &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::::Indeed, now that I look specifically for aerogel + water, I see that they're extremely useful for their selectivity as a filter material, with [https://ars.els-cdn.com/content/image/1-s2.0-S0959652621038907-ga1.jpg hydrophilic &amp;amp; hydrophobic variants] being just the tip of the iceberg (so to speak). ([https://www.sciencedirect.com/science/article/abs/pii/S0959652621038907]) I'm amazed that a material that's almost entirely hollow, can also be open-celled &amp;amp; yet still obstruct gas flow enough for an inch of it to stop an acetylene torch cold (so to speak!)! The ''only'' closed-cell aerogels I find reference to, use plastics to seal them up; the aerogels are just a lattice... This is directly at odds with my initial impression of aerogels as basically being a hard-set silica or carbon foam. Once set, it really is structurally more like a sponge than a foam? Thanks for the enlightenment; this info has led me to a bunch of fascinating reading on a subject I thought I'd grown bored of hearing about!&amp;#160;  &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 22:25, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 22:25, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;::::::Thank you for that link; that's going to make for some interesting reading. There's a lot more to the field than I could have imagined. Without having gone to the source papers yet, I can make guesses about some of the chemistry: &amp;quot;if I wanted to use aerogels to selectively capture heavy metals, I'd do it with sulfide groups&amp;quot;. I'll see how my guesses pan out. :-) I admit to some skepticism about trying to do some of the extractions on a large scale rather than a bench scale. Trying to do environmental remediation, as implied, would require ''large'' amounts of expensive and somewhat fragile gel material. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 16:06, 18 September 2023 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Why not filling the aerogel with hydrogen? You might save for torpedoes then. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 21:24, 15 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Why not filling the aerogel with hydrogen? You might save for torpedoes then. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 21:24, 15 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>BunsenH</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323918&amp;oldid=prev</id>
		<title>172.71.126.137: Undo revision 323917 by 172.71.126.136 (talk)</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323918&amp;oldid=prev"/>
				<updated>2023-09-18T12:45:54Z</updated>
		
		<summary type="html">&lt;p&gt;Undo revision 323917 by &lt;a href=&quot;/wiki/index.php/Special:Contributions/172.71.126.136&quot; title=&quot;Special:Contributions/172.71.126.136&quot;&gt;172.71.126.136&lt;/a&gt; (&lt;a href=&quot;/wiki/index.php?title=User_talk:172.71.126.136&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;User talk:172.71.126.136 (page does not exist)&quot;&gt;talk&lt;/a&gt;)&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 12:45, 18 September 2023&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l33&quot; &gt;Line 33:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 33:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;I did some calculations, based on the data that, at 0 degrees C and sea level, a cubic meter of either hydrogen or helium will lift 1 kilogramme (close enough) of mass, and the average Iceberg Alley iceberg has a mass of 100,000 tonnes. I worked out that, to lift that &amp;quot;average iceberg&amp;quot;, one would need a cube of lifting gas 500 m (five average USA city blocks) per side. If this is correct, the challenge of fitting that cube of gas inside the average iceberg is (&amp;lt;i&amp;gt;ahem&amp;lt;/i&amp;gt;) nontrivial. [[Special:Contributions/172.69.34.40|172.69.34.40]] 17:45, 16 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;I did some calculations, based on the data that, at 0 degrees C and sea level, a cubic meter of either hydrogen or helium will lift 1 kilogramme (close enough) of mass, and the average Iceberg Alley iceberg has a mass of 100,000 tonnes. I worked out that, to lift that &amp;quot;average iceberg&amp;quot;, one would need a cube of lifting gas 500 m (five average USA city blocks) per side. If this is correct, the challenge of fitting that cube of gas inside the average iceberg is (&amp;lt;i&amp;gt;ahem&amp;lt;/i&amp;gt;) nontrivial. [[Special:Contributions/172.69.34.40|172.69.34.40]] 17:45, 16 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:How about if you used ''liquid'' helium, the same lift in a smaller volume? ''(/jk!)'' [[Special:Contributions/172.71.242.62|172.71.242.62]] 18:49, 16 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:How about if you used ''liquid'' helium, the same lift in a smaller volume? ''(/jk!)'' [[Special:Contributions/172.71.242.62|172.71.242.62]] 18:49, 16 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;::Liquid helium does not lift anything. It's denser than air.--[[Special:Contributions/172.71.126.136|172.71.126.136]] 12:45, 18 September 2023 (UTC)&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The 'Lusitania' was sank by torpedoes fired from underwater.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The 'Lusitania' was sank by torpedoes fired from underwater.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>172.71.126.137</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323917&amp;oldid=prev</id>
		<title>172.71.126.136 at 12:45, 18 September 2023</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323917&amp;oldid=prev"/>
				<updated>2023-09-18T12:45:18Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 12:45, 18 September 2023&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l33&quot; &gt;Line 33:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 33:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;I did some calculations, based on the data that, at 0 degrees C and sea level, a cubic meter of either hydrogen or helium will lift 1 kilogramme (close enough) of mass, and the average Iceberg Alley iceberg has a mass of 100,000 tonnes. I worked out that, to lift that &amp;quot;average iceberg&amp;quot;, one would need a cube of lifting gas 500 m (five average USA city blocks) per side. If this is correct, the challenge of fitting that cube of gas inside the average iceberg is (&amp;lt;i&amp;gt;ahem&amp;lt;/i&amp;gt;) nontrivial. [[Special:Contributions/172.69.34.40|172.69.34.40]] 17:45, 16 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;I did some calculations, based on the data that, at 0 degrees C and sea level, a cubic meter of either hydrogen or helium will lift 1 kilogramme (close enough) of mass, and the average Iceberg Alley iceberg has a mass of 100,000 tonnes. I worked out that, to lift that &amp;quot;average iceberg&amp;quot;, one would need a cube of lifting gas 500 m (five average USA city blocks) per side. If this is correct, the challenge of fitting that cube of gas inside the average iceberg is (&amp;lt;i&amp;gt;ahem&amp;lt;/i&amp;gt;) nontrivial. [[Special:Contributions/172.69.34.40|172.69.34.40]] 17:45, 16 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:How about if you used ''liquid'' helium, the same lift in a smaller volume? ''(/jk!)'' [[Special:Contributions/172.71.242.62|172.71.242.62]] 18:49, 16 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:How about if you used ''liquid'' helium, the same lift in a smaller volume? ''(/jk!)'' [[Special:Contributions/172.71.242.62|172.71.242.62]] 18:49, 16 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;::Liquid helium does not lift anything. It's denser than air.--[[Special:Contributions/172.71.126.136|172.71.126.136]] 12:45, 18 September 2023 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The 'Lusitania' was sank by torpedoes fired from underwater.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The 'Lusitania' was sank by torpedoes fired from underwater.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>172.71.126.136</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323903&amp;oldid=prev</id>
		<title>ProphetZarquon: Fascinating hydrophobic &amp; hydrophilic varieties n (Also oil!)</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323903&amp;oldid=prev"/>
				<updated>2023-09-17T22:25:58Z</updated>
		
		<summary type="html">&lt;p&gt;Fascinating hydrophobic &amp;amp; hydrophilic varieties n (Also oil!)&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 22:25, 17 September 2023&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l17&quot; &gt;Line 17:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 17:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 02:04, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 02:04, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::::The structure of silica aerogels is a network of &amp;quot;strands&amp;quot; composed of tiny silica nodules. It's entirely open. They're good thermal insulators because the network disrupts convection and somewhat inhibits other gas movement. Back when aerogels were novel, when I was in grad school doing organometallic chem, we had a weekly presentation by one or two of us -- brainstorming our research + getting practise in presenting. I did one such talk about aerogels, mostly because they were Really Cool, but I tied it in to our own work by noting their potential for catalysis. The nifty thing about aerogels in that regard is that they're almost entirely &amp;quot;surface area&amp;quot;: almost every atom/molecule is close to direct contact with the void volume. That makes for efficient use of a solid catalyst, which are often expensive... either making aerogel directly from them, or bonded to something like silica. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 04:15, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::::The structure of silica aerogels is a network of &amp;quot;strands&amp;quot; composed of tiny silica nodules. It's entirely open. They're good thermal insulators because the network disrupts convection and somewhat inhibits other gas movement. Back when aerogels were novel, when I was in grad school doing organometallic chem, we had a weekly presentation by one or two of us -- brainstorming our research + getting practise in presenting. I did one such talk about aerogels, mostly because they were Really Cool, but I tied it in to our own work by noting their potential for catalysis. The nifty thing about aerogels in that regard is that they're almost entirely &amp;quot;surface area&amp;quot;: almost every atom/molecule is close to direct contact with the void volume. That makes for efficient use of a solid catalyst, which are often expensive... either making aerogel directly from them, or bonded to something like silica. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 04:15, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:::::Indeed, now that I look specifically for aerogel + water, I see that they're extremely useful for their selectivity as a filter material, with [https://ars.els-cdn.com/content/image/1-s2.0-S0959652621038907-ga1.jpg hydrophilic &amp;amp; hydrophobic variants] being just the tip of the iceberg (so to speak). ([https://www.sciencedirect.com/science/article/abs/pii/S0959652621038907]) I'm amazed that a material that's almost entirely hollow, can also be open-celled &amp;amp; yet still obstruct gas flow enough for an inch of it to stop an acetylene torch cold (so to speak!)! The ''only'' closed-cell aerogels I find reference to, use plastics to seal them up; the aerogels are just a lattice... This is directly at odds with my initial impression of aerogels as basically being a hard-set silica or carbon foam. Once set, it really is structurally more like a sponge than a foam? Thanks for the enlightenment; this info has led me to a bunch of fascinating reading on a subject I thought I'd grown bored of hearing about!&amp;#160;  &lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:::::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 22:25, 17 September 2023 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Why not filling the aerogel with hydrogen? You might save for torpedoes then. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 21:24, 15 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Why not filling the aerogel with hydrogen? You might save for torpedoes then. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 21:24, 15 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>ProphetZarquon</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323901&amp;oldid=prev</id>
		<title>162.158.74.72 at 21:15, 17 September 2023</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323901&amp;oldid=prev"/>
				<updated>2023-09-17T21:15:05Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 21:15, 17 September 2023&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l35&quot; &gt;Line 35:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 35:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;''&amp;quot;This idea of producing a man-made flying iceberg for the sole purpose of endangering cruise liners, would likely be seen as preposterous&amp;quot;''. In fact, that would be an perfect plot for an upcoming 'James Bond' film, as an high percentage of the Villain's plots&amp;#160; in the franchise are considered preposterous: [https://www.ranker.com/list/bond-villain-plans-ranked/mike-rothschild/ Every Bond Villain Plan, Ranked by Insanity] [[User:These Are Not The Comments You Are Looking For|These Are Not The Comments You Are Looking For]] ([[User talk:These Are Not The Comments You Are Looking For|talk]]) 18:53, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;''&amp;quot;This idea of producing a man-made flying iceberg for the sole purpose of endangering cruise liners, would likely be seen as preposterous&amp;quot;''. In fact, that would be an perfect plot for an upcoming 'James Bond' film, as an high percentage of the Villain's plots&amp;#160; in the franchise are considered preposterous: [https://www.ranker.com/list/bond-villain-plans-ranked/mike-rothschild/ Every Bond Villain Plan, Ranked by Insanity] [[User:These Are Not The Comments You Are Looking For|These Are Not The Comments You Are Looking For]] ([[User talk:These Are Not The Comments You Are Looking For|talk]]) 18:53, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:Disappointed that that link doesn't bother to include the ''other'' Casino Royale (with David Niven, although the rather sane/'sorta-faithful' Barry Nelson version predated even that), which has in-universe insanity in spades (never mind actual production-insanity!), including an actual flying 'UFO' (used for kidnapping, not for torpedoing). [[Special:Contributions/162.158.74.72|162.158.74.72]] 21:15, 17 September 2023 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>162.158.74.72</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323899&amp;oldid=prev</id>
		<title>These Are Not The Comments You Are Looking For at 18:53, 17 September 2023</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323899&amp;oldid=prev"/>
				<updated>2023-09-17T18:53:57Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 18:53, 17 September 2023&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l34&quot; &gt;Line 34:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 34:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The 'Lusitania' was sank by torpedoes fired from underwater.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The 'Lusitania' was sank by torpedoes fired from underwater.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;''&amp;quot;This idea of producing a man-made flying iceberg for the sole purpose of endangering cruise liners, would likely be seen as preposterous&amp;quot;''. In fact, that would be an perfect plot for an upcoming 'James Bond' film, as an high percentage of the Villain's plots&amp;#160; in the franchise are considered preposterous: [https://www.ranker.com/list/bond-villain-plans-ranked/mike-rothschild/ Every Bond Villain Plan, Ranked by Insanity]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;''&amp;quot;This idea of producing a man-made flying iceberg for the sole purpose of endangering cruise liners, would likely be seen as preposterous&amp;quot;''. In fact, that would be an perfect plot for an upcoming 'James Bond' film, as an high percentage of the Villain's plots&amp;#160; in the franchise are considered preposterous: [https://www.ranker.com/list/bond-villain-plans-ranked/mike-rothschild/ Every Bond Villain Plan, Ranked by Insanity] &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;[[User:These Are Not The Comments You Are Looking For|These Are Not The Comments You Are Looking For]] ([[User talk:These Are Not The Comments You Are Looking For|talk]]) 18:53, 17 September 2023 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>These Are Not The Comments You Are Looking For</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323898&amp;oldid=prev</id>
		<title>These Are Not The Comments You Are Looking For: Added Villianous references.</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323898&amp;oldid=prev"/>
				<updated>2023-09-17T18:53:27Z</updated>
		
		<summary type="html">&lt;p&gt;Added Villianous references.&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 18:53, 17 September 2023&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l33&quot; &gt;Line 33:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 33:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The 'Lusitania' was sank by torpedoes fired from underwater.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The 'Lusitania' was sank by torpedoes fired from underwater.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;''&amp;quot;This idea of producing a man-made flying iceberg for the sole purpose of endangering cruise liners, would likely be seen as preposterous&amp;quot;''. In fact, that would be an perfect plot for an upcoming 'James Bond' film, as an high percentage of the Villain's plots&amp;#160; in the franchise are considered preposterous: [https://www.ranker.com/list/bond-villain-plans-ranked/mike-rothschild/ Every Bond Villain Plan, Ranked by Insanity]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>These Are Not The Comments You Are Looking For</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323889&amp;oldid=prev</id>
		<title>BunsenH at 04:15, 17 September 2023</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2829:_Iceberg_Efficiency&amp;diff=323889&amp;oldid=prev"/>
				<updated>2023-09-17T04:15:43Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 04:15, 17 September 2023&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l16&quot; &gt;Line 16:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 16:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::Neato! I'd never heard about that in any of my reading on the subject! What about the explanation saying that (non-soluble) aerogels would admit water like a sponge? That sounds incorrect, as they wouldn't have good insulative properties if the cells weren't closed off from each other. I'm pretty sure any aerogel that doesn't dissolve, ''would'' float, exceptionally well?&amp;#160;  &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::Neato! I'd never heard about that in any of my reading on the subject! What about the explanation saying that (non-soluble) aerogels would admit water like a sponge? That sounds incorrect, as they wouldn't have good insulative properties if the cells weren't closed off from each other. I'm pretty sure any aerogel that doesn't dissolve, ''would'' float, exceptionally well?&amp;#160;  &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 02:04, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 02:04, 17 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;::::The structure of silica aerogels is a network of &amp;quot;strands&amp;quot; composed of tiny silica nodules. It's entirely open. They're good thermal insulators because the network disrupts convection and somewhat inhibits other gas movement. Back when aerogels were novel, when I was in grad school doing organometallic chem, we had a weekly presentation by one or two of us -- brainstorming our research + getting practise in presenting. I did one such talk about aerogels, mostly because they were Really Cool, but I tied it in to our own work by noting their potential for catalysis. The nifty thing about aerogels in that regard is that they're almost entirely &amp;quot;surface area&amp;quot;: almost every atom/molecule is close to direct contact with the void volume. That makes for efficient use of a solid catalyst, which are often expensive... either making aerogel directly from them, or bonded to something like silica. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 04:15, 17 September 2023 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Why not filling the aerogel with hydrogen? You might save for torpedoes then. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 21:24, 15 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Why not filling the aerogel with hydrogen? You might save for torpedoes then. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 21:24, 15 September 2023 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>BunsenH</name></author>	</entry>

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