explain xkcd - User contributions [en]

Talk:1551: Pluto

2016-08-05T10:07:45Z

162.158.85.165:

Pluto is a planet. Period. Dwarf planets are a special kind of planets - small ones. Also Pluto is a full planet because it's not like a piece of a planet. OK?

I knew it! So my BOT was also running today. And don't miss the updates at WhatIf. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 19:28, 14 July 2015 (UTC)

Yeah, it's pretty amazing! What is it with XKCD and Pluto these days by the way? [[User:Nk22|The Twenty-second. The Not So Only. The Nathan/Nk22]] ([[User talk:Nk22|talk]]) 19:36, 14 July 2015 (UTC)
:New Horizons space probe flyby of the Pluto system! I can't imagine that a space probe finally reaching a hitherto unmapped planetoid like Pluto wouldn't be exciting to certain people, especially an ex NASA guy like Randall. -Pennpenn [[Special:Contributions/108.162.250.162|108.162.250.162]] 06:27, 15 July 2015 (UTC)

Pluto is moving away from the Sun - and we've learned that as it does so, it enters the snowy part of its 248-year cycle. Hmm ... didn't Ned Stark say something about this? [[User:Cosmogoblin|Cosmogoblin]] ([[User talk:Cosmogoblin|talk]]) 22:11, 14 July 2015 (UTC)

Alright, the only one that's still got me stumped is "moon buds." The phrase has no stock meaning (Googling it turned up pictures of weed, naturally), but my best guess is this suggests moons reproduce through {{w|budding}}. Any thoughts? [[User:Captain Video|Captain Video]] ([[User talk:Captain Video|talk]]) 00:38, 15 July 2015 (UTC)
:I have added something. {{User:17jiangz1/signature|03:21, 15 July 2015}}

"Border of pride lands" might also be an indirect reference to the "dark region" on Mars in 1504:opportunity, last panel, which is itself a reference to the Hyena Country of "Lion King." [[User:Taibhse|Taibhse]] ([[User talk:Taibhse|talk]]) 09:56, 15 July 2015 (UTC)

A couple of other possibilities for the reference to hatching: http://scifi.stackexchange.com/questions/82353/giant-bird-in-space
--[[Special:Contributions/141.101.104.9|141.101.104.9]] 10:26, 15 July 2015 (UTC)

So Megaman needs no further explanation? --[[Special:Contributions/141.101.99.109|141.101.99.109]] 11:04, 15 July 2015 (UTC)

Where is the north pole? I like to play geohashing there. --[[User:GeorgDerReisende|GeorgDerReisende]] ([[User talk:GeorgDerReisende|talk]]) 12:12, 15 July 2015 (UTC)

The comment for Plug(inflating/deflating) is missing [[Special:Contributions/141.101.98.247|141.101.98.247]] 13:30, 15 July 2015 (UTC)

Those aren't bullet holes... they're speed holes! --[[Special:Contributions/108.162.216.97|108.162.216.97]] 13:46, 15 July 2015 (UTC)

The current explanation has that Randall has drawn "humorous pareidolia on top of it". I may be wrong, but isn't pareidolia the psychological process of seeing faces/objects etc in patterns, rather than those objects themselves. E.g. "I saw a mans face on the moon because of a psychological process called pareidolia" rather than "I saw a pareidolia on the moon, which looked like a face". --[[User:Pudder|Pudder]] ([[User talk:Pudder|talk]]) 14:20, 15 July 2015 (UTC)

::I agree, so I changed the word "drawn" to outlined." [[User:Captain Video|Captain Video]] ([[User talk:Captain Video|talk]]) 15:12, 15 July 2015 (UTC)

The heart reference may be related to this popular animated gif that showed up on Reddit: http://imgur.com/7C2GfIF 15:42, 15 July 2015 (UTC) turbotong

:Not originally - I believe NASA were the originator of the "heart" label, though I could be wrong. {{unsigned|Cosmogoblin}}

.jpeg compression only produces those artifacts on digital images. It was designed for professional photographers and did not take into account the effects of hard edges in the image since film images have no hard edges! It just got adopted by everybody else early on so we're stuck with it even though it can work very poorly on digital images. [[User:ExternalMonolog|ExternalMonolog]] ([[User talk:ExternalMonolog|talk]]) 17:30, 15 July 2015 (UTC)
:That's... interestingly not-quite-correct. The JPEG/JFIF method is a good-but-lossy version of digital image compression that outperforms (on compression terms) non-lossy methods of defining a digital image but doesn't work well with hard-edges. Photographs taken in digital format, or converted into digital format from a 'analogue' original, are often put through lossy compression because (for a wise amount of 'loss') the artefacts are easily lost in the already noisy and flowing 'real life' image details, just like the compression of MP3 (MPEG3 Audio Layer, or whichever related standard) applied to audio loses some detail but is generally drowned out by what 'remains', to the casual listener. (Images like graphs and diagrams are ''replete'' with hard edges, and have far fewer needs for subtleties of shade, so using the non-lossless PNG or even GIF (now that it's out of copyright, if that was ever your concern) would be better... Depends on whether you want need more than 256 different colours or a humorous animation. If you want both, there are also solutions, but that's the usual decision I'd be making.)
:I doubt that NASA uses .JPG images (at least between spacecraft and ground, although maybe for later web publication). There would probably be a (non-lossy) compression scheme (either inherently in the format of the image, or of the 'raw' image consisting of original arrays of bitplains, just to cut down on transmission time), so that as much exact science as possible could be extracted from the original pixels without 'smearing' and such artefacts. Professional (terrestrial!) photographers will often take RAW images (instead of/alongside the quick-and-dirty JPEG ones), for better quality (and no-artefact) images that might end up being blown up to poster-sized images, or from which a small segment will be blown up (e.g. ground-based amateur astronomical photography), that would otherwise so easily reveal the flaws.
:Also, IIRC, recent Pluto pictures had notably been created by NASA based upon high-resolution monochrome and lower-resolution colour images from two cameras (usefully analysed seperately, in their own right, and doubtless also needing different exposure times to create) combined together to create the headline pictures we've been seeing.
:Incidentally, noticable JPEG artefacts tend to be 8x8 pixel regions (most often seen when a small photographic region is digitally 'zoomed'). For those that need them, there are "artefact removal" tools in most decent image editing programmes that (with practice) can 'reverse' (or, rather, 'blend') the more obvious artefacts, after the fact. I suspect Randall's image's 'artefacts' are a selectively edited 'artefact addition' (easily done, with the likes of Photoshop and GIMP, and related to 'pixelating' method used to selectively obscure detail) on the original image. NASA never had to 'clean' the image, although some of its released images may have been 'dirtied' after down-conversion. [[Special:Contributions/141.101.98.166|141.101.98.166]] 20:51, 15 July 2015 (UTC)

One of a number of pareidolic features Randall has outlined. [[Special:Contributions/108.162.212.4|108.162.212.4]] 20:56, 15 July 2015 (UTC)

Is there anyone else here who (like me) thought that because of the flaring at the bottom the "heart" area looks more like a Heartless emblem? -Pennpenn [[Special:Contributions/108.162.250.162|108.162.250.162]] 00:15, 16 July 2015 (UTC)

I thought the "whale tail" is to the left of the heart (http://www.nbcnews.com/science/space/find-heart-whale-new-horizons-picture-pluto-n388816), what Randall has labeled "chocolate frosting", not "pride lands". If there's some image reversal I don't know about, revert my edit. [[User:Djbrasier|Djbrasier]] ([[User talk:Djbrasier|talk]]) 01:42, 16 July 2015 (UTC)

The "candy shell" may refer to commercials for M&M chocolates which were described as "milk chocolate wrapped in a colorful thin candy shell". [[User:The Dining Logician|The Dining Logician]] ([[User talk:The Dining Logician|talk]]) 04:10, 16 July 2015 (UTC)

To me, Snake Pit evokes politics, not topography ... [[User:Miamiclay|Miamiclay]] ([[User talk:Miamiclay|talk]]) 08:59, 16 July 2015 (UTC)

I wonder if the text on the surface updates every time the Pareidolia article is edited. [[User:Schiffy|Schiffy]] ([[User_talk:Schiffy|Speak to me]]|[[Special:Contributions/Schiffy|What I've done]]) 15:49, 16 July 2015 (UTC)

I wonder if "the good part" is referencing "JavaScript: The Good Parts" [[Special:Contributions/173.245.50.166|173.245.50.166]] 06:24, 15 August 2015 (UTC)

Talk:1704: Gnome Ann

2016-07-08T08:00:56Z

162.158.85.165:

The lotr reference is about the Witch King of Angmar instead of Sauron
Source:
https://en.m.wikipedia.org/wiki/Witch-king_of_Angmar

[[Special:Contributions/162.158.196.143|162.158.196.143]] 05:05, 8 July 2016 (UTC)Dege

I'm surprised there's no reference to [https://en.wikipedia.org/wiki/Polyphemus Polyphemus] from [https://en.wikipedia.org/wiki/Homer Homer's] [https://en.wikipedia.org/wiki/Odyssey Odyssey]. Or is there one that I haven't seen?

[[Special:Contributions/162.158.85.165|162.158.85.165]] 08:00, 8 July 2016 (UTC)

Talk:1680: Black Hole

2016-05-13T15:30:09Z

162.158.85.165:

IF the explanation of "Milkshake" being a coded message is correct, then I like how Melis plays with it. I always thought the more sexual way, Milkshake meaning shaking her milk bags. Sure, that brings boys to the yard.... [[Special:Contributions/141.101.104.151|141.101.104.151]]

It seems like a black hole of that "volume" would mean the earth "falls" into *it*, not the other way around.

It's not clear what exactly in the comic is a reference to the Big Lebowski movie. This needs clarification. [[User:Todor|Todor]] ([[User talk:Todor|talk]]) 06:48, 13 May 2016 (UTC)

:In the Big Lebowski, The Dude's reasoning for wanting the rug replaced was that "It really tied the room together" [[Special:Contributions/108.162.219.80|108.162.219.80]] 07:50, 13 May 2016 (UTC)

The event horizon of the black hole in the cartoon appears to be roughly an inch across, which using the formula linking Schwarzschild radius to mass (r = 2MG/c^2) gives a black hole of about 3 earth masses. [[Special:Contributions/162.158.34.138|162.158.34.138]] 08:06, 13 May 2016 (UTC)

:OMG. That would mean it also excerts 3 times the gravitational force of earth. As a result people near (also as far away as earth orbits) would only be comfortable standing at a significant angle. Time may also appear to progress slower near the black hole due to the time dilation effect. But I am unsure how pronounced this effect will be from a black hole that size. Audible and visible effects of this would be people talking slower (but not lower as you have with the doppler effect, i beleive that to be a sci-fi misconception), and peoples movements seeming slower. [[User:Todor|Todor]] ([[User talk:Todor|talk]]) 08:50, 13 May 2016 (UTC)

:That strong a pull would mean the hole would not only collect air and particles, but also pull furniture into it. Seing as both people are standing upright I'm guessing the pull can not be more than say one fifth of earths. Maybe it has a visible accretion disc? If you were to run the formula in reverse what diameter would that give you of the hole itself? [[User:Todor|Todor]] ([[User talk:Todor|talk]]) 09:23, 13 May 2016 (UTC)

There's only 5 years between the Big Lebowski and Milkshake (1998 vs 2003) so while "more contemporary" is technically correct, I think it underestimates how old Milkshake is. [[Special:Contributions/141.101.98.21|141.101.98.21]] 08:15, 13 May 2016 (UTC)

Perhaps this comic is in reference to [http://gizmodo.com/were-one-step-closer-to-better-tabletop-particle-accele-1775501374 this article referencing tabletop particle accelerators]? [[Special:Contributions/141.101.104.74|141.101.104.74]] 08:38, 13 May 2016 (UTC)

I once read a short story about this situation where the hole kept feeding and eventually swallowed the whole Galaxy. I thought it was a Stephen King, but my Google Fu can't find it... [[User:Supachris28|Supachris28]] ([[User talk:Supachris28|talk]]) 09:22, 13 May 2016 (UTC)

:It was one of the scare-stories surrounding the Large Hadron Collider (LHC), where a micro-black hole would form and end-of-the-world scenario would ensue. Apparently such a hole could form but would immediately destabilize. On a related note, this brings into question as to how stable the hole in the comic would be, since it seems rather small. If it were to destabilize it would have enough energy to blow the earth to pieces, despite its deceivingly innocent size. [[User:Todor|Todor]] ([[User talk:Todor|talk]]) 09:48, 13 May 2016 (UTC)

See also - Earth by David Brin in which a micro black hole falls into the core [[Special:Contributions/162.158.85.165|162.158.85.165]] 15:30, 13 May 2016 (UTC)

Was I right to add a little about hawking radiation?[[User:Transuranium|Transuranium]] ([[User talk:Transuranium|talk]]) 10:07, 13 May 2016 (UTC)Transuranium

: Hawking radiation from a black hole with "neutron bullet" mass (equivalent to the Empire State Building) would be ''vicious'', equivalent to .78 megatons of TNT per second. However, it could spew out increasingly intense radiation for ''96 years''. [http://xaonon.dyndns.org/hawking/] A lunar mass black hole would be colder than interstellar space and could outlive most of the universe. [[User:.42|.42]] ([[User talk:.42|talk]]) 10:28, 13 May 2016 (UTC)

::As deduced above I guess the hole would not be strong enough to pull them in. But you're saying a black hole with a mass smaller than earth would essentially fry them both and set their house on fire IRL? And that would only be if it was stable enough not to destabilize and blow up. Some best-case scenario that is. :) [[User:Todor|Todor]] ([[User talk:Todor|talk]]) 11:07, 13 May 2016 (UTC)

The [http://www.youtube.com/watch?v=8nHBGFKLHZQ effects of a small black hole] the size of a coin, animation by "Kurzgesagt – In a Nutshell" [[Special:Contributions/141.101.104.154|141.101.104.154]] 11:28, 13 May 2016 (UTC)

== Worst explanation ever ==

I came here for an explanation and I have so many questions.
*<s>What's 'The Dude's' rug in the film "The Big Lebowski"?</s> Answer below says it has no relationship to the comic.
*What about the song "Milkshake" by Kelis?
*What about the discrimination?
*What about "Neutron Bullet" chapter of the ''what if?'' book?
*What about Black Hole Moon in that book?

And related to the comic itself
*What's the mass of a miniature blackhole?
*What are its effects?

[[Special:Contributions/108.162.221.13|108.162.221.13]] 13:31, 13 May 2016 (UTC)
:What's an "explanation"? [[Special:Contributions/141.101.104.81|141.101.104.81]] 13:53, 13 May 2016 (UTC)

:Well, the effects of the black hole is directly related to its size interestingly enough. That was recently added to the article. Explanations are never perfect on the first day, but it gets improved. [[User:Todor|Todor]] ([[User talk:Todor|talk]]) 14:37, 13 May 2016 (UTC)

:Information about the "what if" book would belong in a trivia section if it is added.[[User:Lackadaisical|Lackadaisical]] ([[User talk:Lackadaisical|talk]]) 14:56, 13 May 2016 (UTC)

'''''The Big Lebowski'''''

I'll answer my own question. In ''The Big Lebowski'' the sentence is "That rug really tied the room together." [http://www.imdb.com/title/tt0118715/trivia?tab=qt&ref_=tt_trv_qu]. I assume that ''to '''bring''' something together'' means to make it more agreeable. I deleted the reference. [[Special:Contributions/108.162.221.13|108.162.221.13]] 13:40, 13 May 2016 (UTC)
:Why delete it? While it may not be an explanation, it is a perfectly valid pop-cultural reference and may indeed be the one used in the comic. [[User:Todor|Todor]] ([[User talk:Todor|talk]]) 14:37, 13 May 2016 (UTC)
:I think it is appropriate to delete it. It is a common enough phrase to simply be used without referencing anything. Stating that it was the author's intended reference is simply speculation.[[User:Lackadaisical|Lackadaisical]] ([[User talk:Lackadaisical|talk]]) 14:51, 13 May 2016 (UTC)