explain xkcd - User contributions [en]

2657: Complex Vowels

2022-08-11T10:11:14Z

162.158.134.25: /* Explanation */

{{comic
| number = 2657
| date = August 10, 2022
| title = Complex Vowels
| image = complex_vowels.png
| titletext = Pronouncing [ṡṡċċḣḣẇẇȧȧ] is easy; you just say it like the 'x' in 'fire'.
}}

==Explanation==
{{incomplete|Created by a ROUNDED TONGUE. Do NOT delete this tag too soon.}}

[[File:Ipa-chart-vowels.png|thumb|200px|The IPA vowel chart, with roundedness of the lips represented in pairs.]]

In phonetics based on the {{w|International Phonetic Alphabet}} (IPA), the space of {{w|vocal tract}} articulators determining {{w|vowel}}s  is represented as two-dimensional, from the position of the tongue. The vertical axis represents vowel height or ''closedness'' (i.e., how close or far the tongue is from the top of the mouth), and the horizontal axis represents front-to-back ''place'' (i.e., how close or far the top of the tongue is from the teeth.) The position of the tongue, along with the frequency of the {{w|vocal cords}} vibrating in the larynx from air being exhaled by the diaphragm, are the primary determinants of the fundamental and second {{w|formant}}s of vowel sounds.

A third dimension of vowel sounds is the "roundedness" of the lips, and to a much lesser extent the tongue and cheeks, which is represented on the IPA vowel chart to the right by pairs of vowel phoneme {{w|glyph}}s. Other higher-dimensional vowel representations include {{w|diphthong}}s, which are simply two different sequential vowels slurred together; diphones, which represent the last half of one phoneme followed by the first half of the next; the {{w|vowel shift}} mappings delineating different accents[https://core.ac.uk/download/pdf/47086396.pdf][https://www.sciencedirect.com/science/article/abs/pii/S0095447010000562] and long-term evolution of voiced phone sounds; and {{w|cepstrum|ceptstral}} representations such as {{w|Mel-frequency cepstrum|mel-frequency ceptstral coefficients}}.

[[Randall]] suggests increasing the range of vowel sounds available by using complex notation to indicate an additional dimension using an 'imaginary' axis. In mathematics, {{w|complex number}}s are numbers including both real numbers and {{w|imaginary number}}s. A complex number can be expressed as, "''a'' + ''b''i," where ''a'' and ''b'' are real numbers, but the latter imaginary part is combined with 'i,' the square root of negative one, as depicted in the central expression in the comic by √-1, indicating three dimensional coordinates. When expanding the one-dimensional number line with an imaginary axis, it becomes two-dimensional with the "''b''i" component orthogonal to the original "real" number line. Linguists never use the {{w|complex plane}} to represent vowel roundedness or any other higher-dimensional features of phonemes.{{cn}}

This comic conflates complex numbers in mathematics with "complex vowels" in linguistics. Such complex vowels are implied to create sounds which cannot be properly processed by the human brain, represented graphically as {{w|Zalgo text}} IPA, similarly to the cliché of "black speech" in {{w|Lovecraftian horror}}, a language created by alien beings with different vocal patterns than humans. In reality, people find Zalgo text amusing, thus the humor of the comic, but not particularly insanity-inducing or even more than mildly confusing.{{cn}} This is also funny because unadorned IPA shares some characteristics with Zalgo text, such as extremely uncommon glyphs and weird {{w|diacritics}}.

In linguistics, 'ə' is the {{w|schwa}} symbol, referred to in the title text as well as the depiction of complex phonemes, the most common vowel sound in English polysyllabic words (the 'a' in "comma" or the second 'e' in "letter.") Production of the schwa sound takes place with the tongue, jaw, and lips all in a relaxed, central position; and certainly sounds nothing like the 'x' in "fire", because "fire" doesn't contain the letter 'x.'

Another example of weird diacritics is in [[2619: Crêpe]], and with Zalgo text in [[1647: Diacritics]]. The linguist in the comic appears to be {{w|Gretchen McCulloch}}, as previously depicted in [[2421: Tower of Babel]] and [[2381: The True Name of the Bear]]. The use of typography to create psychological stress is explored in [[859: (]].

The multi-plane scheme of the comic seems inspired by the 3-flavour representation of the Gell-Mann quark model used in particle physics (you can see one on page 4 of the [https://pdg.lbl.gov/2022/reviews/rpp2022-rev-quark-model.pdf Particle Data Group quark model review]).

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

:[A diagram shows the extrusion of the trapezoidal IPA vowel chart upwards into three dimensions. A point near the center is labeled with an equation that shows "ə + 1/2√-1" as being equivalent to a made-up symbol that looks like two schwas mirroring each other with other markings above and below.]

:[Below the diagram, a character with shoulder-length dark wavy hair pronounces the new vowel in a speech bubble with unstable lines surrounding it. Two bystanders to her right are bent over slightly, clutching their heads in apparent anguish.]

:[Caption below the panel:]
:Linguistics tip: Extend the IPA vowel plane along the imaginary axis to produce ''complex vowels'', cursed sounds which the human mind cannot comprehend.

{{comic discussion}}
[[Category:Tips]]
[[Category:Language]]
[[Category:Comics featuring Gretchen McCulloch]]

2657: Complex Vowels

2022-08-11T10:10:02Z

162.158.134.25: /* Explanation */

{{comic
| number = 2657
| date = August 10, 2022
| title = Complex Vowels
| image = complex_vowels.png
| titletext = Pronouncing [ṡṡċċḣḣẇẇȧȧ] is easy; you just say it like the 'x' in 'fire'.
}}

==Explanation==
{{incomplete|Created by a ROUNDED TONGUE. Do NOT delete this tag too soon.}}

[[File:Ipa-chart-vowels.png|thumb|200px|The IPA vowel chart, with roundedness of the lips represented in pairs.]]

In phonetics based on the {{w|International Phonetic Alphabet}} (IPA), the space of {{w|vocal tract}} articulators determining {{w|vowel}}s  is represented as two-dimensional, from the position of the tongue. The vertical axis represents vowel height or ''closedness'' (i.e., how close or far the tongue is from the top of the mouth), and the horizontal axis represents front-to-back ''place'' (i.e., how close or far the top of the tongue is from the teeth.) The position of the tongue, along with the frequency of the {{w|vocal cords}} vibrating in the larynx from air being exhaled by the diaphragm, are the primary determinants of the fundamental and second {{w|formant}}s of vowel sounds.

A third dimension of vowel sounds is the "roundedness" of the lips, and to a much lesser extent the tongue and cheeks, which is represented on the IPA vowel chart to the right by pairs of vowel phoneme {{w|glyph}}s. Other higher-dimensional vowel representations include {{w|diphthong}}s, which are simply two different sequential vowels slurred together; diphones, which represent the last half of one phoneme followed by the first half of the next; the {{w|vowel shift}} mappings delineating different accents[https://core.ac.uk/download/pdf/47086396.pdf][https://www.sciencedirect.com/science/article/abs/pii/S0095447010000562] and long-term evolution of voiced phone sounds; and {{w|cepstrum|ceptstral}} representations such as {{w|Mel-frequency cepstrum|mel-frequency ceptstral coefficients}}.

[[Randall]] suggests increasing the range of vowel sounds available by using complex notation to indicate an additional dimension using an 'imaginary' axis. In mathematics, {{w|complex number}}s are numbers including both real numbers and {{w|imaginary number}}s. A complex number can be expressed as, "''a'' + ''b''i," where ''a'' and ''b'' are real numbers, but the latter imaginary part is combined with 'i,' the square root of negative one, as depicted in the central expression in the comic by √-1, indicating three dimensional coordinates. When expanding the one-dimensional number line with an imaginary axis, it becomes two-dimensional with the "''b''i" component orthogonal to the original "real" number line. Linguists never use the {{w|complex plane}} to represent vowel roundedness or any other higher-dimensional features of phonemes.{{cn}}

This comic conflates complex numbers in mathematics with "complex vowels" in linguistics. Such complex vowels are implied to create sounds which cannot be properly processed by the human brain, represented graphically as {{w|Zalgo text}} IPA, similarly to the cliché of "black speech" in {{w|Lovecraftian horror}}, a language created by alien beings with different vocal patterns than humans. In reality, people find Zalgo text amusing, thus the humor of the comic, but not particularly insanity-inducing or even more than mildly confusing.{{cn}} This is also funny because unadorned IPA shares some characteristics with Zalgo text, such as extremely uncommon glyphs and weird {{w|diacritics}}.

In linguistics, 'ə' is the {{w|schwa}} symbol, referred to in the title text as well as the depiction of complex phonemes, the most common vowel sound in English polysyllabic words (the 'a' in "comma" or the second 'e' in "letter.") Production of the schwa sound takes place with the tongue, jaw, and lips all in a relaxed, central position; and certainly sounds nothing like the 'x' in "fire", because "fire" doesn't contain the letter 'x.'

Another example of weird diacritics is in [[2619: Crêpe]], and with Zalgo text in [[1647: Diacritics]]. The linguist in the comic appears to be {{w|Gretchen McCulloch}}, as previously depicted in [[2421: Tower of Babel]] and [[2381: The True Name of the Bear]]. The use of typography to create psychological stress is explored in [[859: (]].

The multi-plane scheme of the comic seems inspired by the 3-flavour representation of the Gell-Mann quark model used in particle physics (you can see one on page 4 of the [https://pdg.lbl.gov/2022/reviews/rpp2022-rev-quark-model.pdf| Particle Data Group quark model review]).

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

:[A diagram shows the extrusion of the trapezoidal IPA vowel chart upwards into three dimensions. A point near the center is labeled with an equation that shows "ə + 1/2√-1" as being equivalent to a made-up symbol that looks like two schwas mirroring each other with other markings above and below.]

:[Below the diagram, a character with shoulder-length dark wavy hair pronounces the new vowel in a speech bubble with unstable lines surrounding it. Two bystanders to her right are bent over slightly, clutching their heads in apparent anguish.]

:[Caption below the panel:]
:Linguistics tip: Extend the IPA vowel plane along the imaginary axis to produce ''complex vowels'', cursed sounds which the human mind cannot comprehend.

{{comic discussion}}
[[Category:Tips]]
[[Category:Language]]
[[Category:Comics featuring Gretchen McCulloch]]

2657: Complex Vowels

2022-08-11T08:01:34Z

162.158.134.25: /* Explanation */ resemblance to Gell-Mann quark model

{{comic
| number = 2657
| date = August 10, 2022
| title = Complex Vowels
| image = complex_vowels.png
| titletext = Pronouncing [ṡṡċċḣḣẇẇȧȧ] is easy; you just say it like the 'x' in 'fire'.
}}

==Explanation==
{{incomplete|Created by a ROUNDED TONGUE. Do NOT delete this tag too soon.}}

[[File:Ipa-chart-vowels.png|thumb|200px|The IPA vowel chart, with roundedness of the lips represented in pairs.]]

In phonetics based on the {{w|International Phonetic Alphabet}} (IPA), the space of {{w|vocal tract}} articulators determining {{w|vowel}}s  is represented as two-dimensional, from the position of the tongue. The vertical axis represents vowel height or ''closedness'' (i.e., how close or far the tongue is from the top of the mouth), and the horizontal axis represents front-to-back ''place'' (i.e., how close or far the top of the tongue is from the teeth.) The position of the tongue, along with the frequency of the {{w|vocal cords}} vibrating in the larynx from air being exhaled by the diaphragm, are the primary determinants of the fundamental and second {{w|formant}}s of vowel sounds.

A third dimension of vowel sounds is the "roundedness" of the lips, and to a much lesser extent the tongue and cheeks, which is represented on the IPA vowel chart to the right by pairs of vowel phoneme {{w|glyph}}s. [[Randall]] thus suggests using complex notation to indicate such a third dimension. Other higher-dimensional vowel representations include {{w|diphthong}}s, which are simply two different sequential vowels slurred together; diphones, which represent the last half of one phoneme followed by the first half of the next; the {{w|vowel shift}} mappings delineating different accents[https://core.ac.uk/download/pdf/47086396.pdf][https://www.sciencedirect.com/science/article/abs/pii/S0095447010000562] and long-term evolution of voiced phone sounds; and {{w|cepstrum|ceptstral}} representations such as {{w|Mel-frequency cepstrum|mel-frequency ceptstral coefficients}}.

In mathematics, {{w|complex number}}s are numbers including both real numbers and {{w|imaginary number}}s. A complex number can be expressed as, "''a'' + ''b''i," where ''a'' and ''b'' are real numbers, but the latter imaginary part is combined with 'i,' the square root of negative one, as depicted in the central expression in the comic by √-1, indicating three dimensional coordinates. When expanding the one-dimensional number line with an imaginary axis, it becomes two-dimensional with the "''b''i" component orthogonal to the original "real" number line. Linguists never use the {{w|complex plane}} to represent vowel roundedness or any other higher-dimensional features of phonemes.{{cn}}

This comic conflates complex numbers in mathematics with "complex vowels" in linguistics. Such complex vowels are implied to create sounds which cannot be properly processed by the human brain, represented graphically as {{w|Zalgo text}} IPA, similarly to the cliché of "black speech" in {{w|Lovecraftian horror}}, a language created by alien beings with different vocal patterns than humans. In reality, people find Zalgo text amusing, thus the humor of the comic, but not particularly insanity-inducing or even more than mildly confusing.{{cn}} This is also funny because unadorned IPA shares some characteristics with Zalgo text, such as extremely uncommon glyphs and weird {{w|diacritics}}.

In linguistics, 'ə' is the {{w|schwa}} symbol, referred to in the title text as well as the depiction of complex phonemes, the most common vowel sound in English polysyllabic words (the 'a' in "comma" or the second 'e' in "letter.") Production of the schwa sound takes place with the tongue, jaw, and lips all in a relaxed, central position; and certainly sounds nothing like the 'x' in "fire", because "fire" doesn't contain the letter 'x.'

Another example of weird diacritics is in [[2619: Crêpe]], and with Zalgo text in [[1647: Diacritics]]. The linguist in the comic appears to be {{w|Gretchen McCulloch}}, as previously depicted in [[2421: Tower of Babel]] and [[2381: The True Name of the Bear]]. The use of typography to create psychological stress is explored in [[859: (]].

The multi-plane scheme of the comic seems inspired by the 3-flavour representation of the Gell-Mann quark model used in particle physics (you can see one on page 4 of the [[https://pdg.lbl.gov/2022/reviews/rpp2022-rev-quark-model.pdf|Particle Data Group quark model review]]).

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

:[A diagram shows the extrusion of the trapezoidal IPA vowel chart upwards into three dimensions. A point near the center is labeled with an equation that shows "ə + 1/2√-1" as being equivalent to a made-up symbol that looks like two schwas mirroring each other with other markings above and below.]

:[Below the diagram, a character with shoulder-length dark wavy hair pronounces the new vowel in a speech bubble with unstable lines surrounding it. Two bystanders to her right are bent over slightly, clutching their heads in apparent anguish.]

:[Caption below the panel:]
:Linguistics tip: Extend the IPA vowel plane along the imaginary axis to produce ''complex vowels'', cursed sounds which the human mind cannot comprehend.

{{comic discussion}}
[[Category:Tips]]
[[Category:Language]]
[[Category:Comics featuring Gretchen McCulloch]]

Talk:2657: Complex Vowels

2022-08-11T08:00:51Z

162.158.134.25: /* Resemblance to Gell-Mann quark model */

Spoken symbol bears resemblance to 🜏, https://en.wiktionary.org/wiki/%F0%9F%9C%8F
:Not really, it's closer to 'əG.' [[Special:Contributions/172.69.33.25|172.69.33.25]] 01:15, 11 August 2022 (UTC)
::Looks like ꬱ to me. Plus some diacritics sprinkled over it, of course. It does look ''similar'' to 🜏 when you include the zalgo. [[Special:Contributions/172.71.98.99|172.71.98.99]] 06:53, 11 August 2022 (UTC)

sscchhwwaa is easy, say it like the x in "fire" and the silent p in "bath"[[Special:Contributions/172.70.85.13|172.70.85.13]] 21:42, 10 August 2022 (UTC)
:What? There is no 'x' in "fire." [[Special:Contributions/172.69.33.25|172.69.33.25]] 01:17, 11 August 2022 (UTC)

Ideas: bellows-, reed-, and lucite-based voiced phone production tracts typical in science museums; {{w|diphone}}s as an alternative to phomemes (a diphone is the second half of one phoneme followed by the first half of the next -- NOT two adjacent phomemes as the Wikipedia article claims. Two adjacent phomemes are a biphone, not a diphone); the relationship of the position of the tongue in two dimensional place × closedeness space to the fundamental and second {{w|formant}} frequencies of speech audio; {{w|diphthong}}s; {{w|Mel-frequency cepstrum|cepstral}} representation such as {{w|MFCC|mel-frequency ceptstral coefficients}}; and {{w|Zalgo text}} IPA. [[Special:Contributions/172.70.206.213|172.70.206.213]] 22:41, 10 August 2022 (UTC)
: Roger. [[Special:Contributions/172.69.33.149|172.69.33.149]] 03:25, 11 August 2022 (UTC)

The vowelspace is depicted in two dimensions for convenience, but it has at least three dimensions. Look at the IPA vowel diagram (already added to this page). The third dimension is roundedness.
:Yes, of the lips; apart from the two dimensions (out: place, and up: closedeness) of the tongue. [[Special:Contributions/172.70.206.95|172.70.206.95]] 22:59, 10 August 2022 (UTC)
::Does roundedness also involve the tongue and cheeks to any extent? [[Special:Contributions/172.69.33.199|172.69.33.199]] 23:36, 10 August 2022 (UTC)

This linguist character has appeared 3 times now. Will there be a new character page dedicated to Gretchen or "The Linguist"? [[Special:Contributions/172.69.33.225|172.69.33.225]] 00:21, 11 August 2022 (UTC)

Can someone please create and paste in a zalgostring for the fancy 'əG' ligature shown twice in the comic? [[Special:Contributions/172.70.211.134|172.70.211.134]] 01:10, 11 August 2022 (UTC)
:Is this another example of Randall trolling Explainxkcd as in [[2619: Crêpe]]? [[Special:Contributions/172.69.33.37|172.69.33.37]] 01:45, 11 August 2022 (UTC)

Someone please remind me how to Zalgo a top horizontal bar over √-1. [[Special:Contributions/172.70.211.134|172.70.211.134]] 02:34, 11 August 2022 (UTC)
: Slow way = Windows Character Map --> Group by: unicode subrange... Group By: Combining Diacritical Marks. 6th character from the top left (U+0305:Overline) yields √-̅1̅.
:Fast way = HTML character entities, ''{character it combines with}&#{character number code};'' (773:Overline) yields √-̅1̅
:Ignore other codes as they are either non-combining or have height relative to combining character (ie Macron) -- [[Special:Contributions/172.69.70.201|172.69.70.201]] 04:35, 11 August 2022 (UTC)
::Are you sure? Those aren't wide enough to connect along the top for me. [[Special:Contributions/172.69.34.10|172.69.34.10]] 07:57, 11 August 2022 (UTC)

I don’t think what Randall is trying to do is provide a “roundness” dimension, but that’s how the explanation reads to me right now (“such” a dimension, e.g.) [[User:Szeth Pancakes|Szeth Pancakes]] ([[User talk:Szeth Pancakes|talk]]) 05:13, 11 August 2022 (UTC)

Talk:2657: Complex Vowels

2022-08-11T07:59:39Z

162.158.134.25: /* Resemblance to Gell-Mann quark model */ new section

Talk:2656: Scientific Field Prefixes

2022-08-09T04:39:31Z

162.158.134.25:

Interestingly enough, the last time I was at a dentist, I ask them if they had seen any research work on how to do dentistry in zero-g, like if you got a toothache halfway to Mars.
[[Special:Contributions/162.158.107.56|162.158.107.56]] 01:58, 9 August 2022 (UTC) BCS

Comment on comment: there should have been work done on dental procedures aboard orbiting stations, and also on e.g. Antarctic bases. [[Special:Contributions/162.158.134.25|162.158.134.25]] 04:39, 9 August 2022 (UTC) Pär Leijonhufvud

Those who say that there's no such thing as High-Energy Theology should be taken with a pinch of salt. Or even a {{w|Lot's wife|Lot}}! [[Special:Contributions/172.70.91.80|172.70.91.80]] 02:05, 9 August 2022 (UTC)

I'm a little concerned with Theoretical Theology. How much more theoritical can base theology be? [[Special:Contributions/108.162.250.198|108.162.250.198]] 02:22, 9 August 2022 (UTC) Beechmere

I'd love to conduct research on Marine Massage! How do I find the link? (Purposes.)
:We need another dimension for Theoretical Marine Massave [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 04:03, 9 August 2022 (UTC)

Unfortunately the "Marine dentistry" one appear to be a false positive: it contains the test string "...Marine, Dentistry..." in a list of possible fields where AR technology could be useful (Novakova, N.G., 2019. Innovation potential of augmented technologies in industrial context. Industry 4.0, 4(1), pp.24-28).
Also the "high-energy psychology" one was similarly a dud: student newspaper with a help wanted ad for a "high energy psychology student" (https://core.ac.uk/download/pdf/217247671.pdf). The lack of manual curation of Scholar sometimes gives you these finds. Thirdly, Randall definitely searched with quote marks: https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=marine+dentistry yields over 100 k results while https://scholar.google.com/scholar?hl=en&as_sdt=0%252C5&q=%22marine+dentistry%22 only yields one, with at least one of the former being papers on marine mammal dentistry (I have for practical porpoises no interest in dentistry, but I *want* to read https://onlinelibrary.wiley.com/doi/abs/10.1002/9781119545804.ch11). In summary: by searching for the exact phrase Randall eliminated a large number of false positives, but also missed a large number of interesting papers. [[Special:Contributions/162.158.134.157|162.158.134.157]] 04:32, 9 August 2022 (UTC) Pär Leijonhufvud

2651: Air Gap

2022-07-28T16:14:34Z

162.158.134.25: cute plural

{{comic
| number = 2651
| date = July 27, 2022
| title = Air Gap
| image = air_gap.png
| titletext = You can still do powerline networking, but the bitrate does drop a little depending on the lightbulb warmup and cooldown delay.
}}

==Explanation==
{{incomplete|Created by an AIR GAP-PROTECTED BOT - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
The comic conflates the concepts of computer network security and home electrical power safety, resulting in a deeply impractical and ineffective proposed solution. In {{w|computer security}}, {{w|Air_gap_(networking)|air-gapping}} is a measure used to secure sensitive computers or networks of computers by isolating them from the broader internet, since computers are often breached through the internet. {{w|Energy security}} is the concern, typically expressed at a national, rather than domestic, level, with ensuring sufficient affordable and reliable sources of energy to meet demand. It has become an increasingly pressing issue due to the use of energy supplies as a geopolitical tool, exacerbated by the drive to reorient energy generation away from polluting fossil fuels. {{w|Lightning protection}} is a home fire safety practice.

[[Randall]] suggests increasing the security of your home power supply by air-gapping it, using the light from a powered lightbulb to power a solar panel which then supplies power to the home, such that there is no physical wired connection between your house and the public electricity network. This is a large and very inefficient version of an {{w|opto-isolator}}, but would protect equipment behind the solar panel from power surges such as lightning strikes (which in an improperly {{w|Ground (electricity)|grounded}} home could blow out the light bulb, but not so easily risk frying the equipment beyond the photovoltaic cell and its inverter). Due to its inefficiency, this approach would waste significant amounts of energy, and therefore actually worsen problems of energy security.

The title text mentions that a computer can still be connected to the internet via the power supply by using {{w|powerline networking}}, but that the bandwidth would be reduced by the lightbulb's warmup and cooldown delay, which would reduce the signalling rate the lightbulb could accomplish. However, this is incorrect, as the solar panel cannot emit signals, and an unidirectional link is useless for traditional networking, because necessary requests and acknowledgments would be unable to travel from behind the solar panel to the lightbulb. Early {{w|communication satellite}} systems for data networking used high bandwidth unidirectional {{w|downlink}}s paired with low bandwidth ground telephone lines for outbound transmission, but such network configurations remain very uncommon.{{cn}}

Randell is seemingly unaware of {{w|Isolation transformer|isolation transformers}} which serve to allow the transfer of power via changing {{w|electromagnetic field}}s without an electrically conductive path. Most transformers, including "wall wart" power adapters, provide this form of isolation and protect devices from noise, voltage transients, most surges, and shock hazard, with fuses and other circuitry.

===Why this would be inefficient and impractical===

* Even energy-efficient LED lightbulbs are only about 35% efficient at turning electricity into light, with the rest emitted as heat.
* The air gap is inefficient at passing light from the bulb to the panel, causing some of the light from the lightbulb to be lost to places other than the solar panel, such as to the eye of the observer. A rough guess might be that in the configuration shown less than 60% of light produced will reach the panel, even assuming a perfect reflector.
* Solar panels are generally around 20% efficient at converting light into electricity, with claims at the world record from a single light source at around 40%.

All these efficiency-reducing factors, and others, multiply together. Therefore, only a small fraction of energy would be transmitted between the two ends of the air gap, making the circuit require much more electricity and be much less cost-efficient.

The solution as illustrated shows a single apparently-normal lightbulb, the highest-powered of which use under 50 Watts of power. Given the above efficiency issues, it would provide less than five Watts of power to a home which would typically require over a thousand Watts.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[A solar panel and a lamp are pictured together, with the lamp pointed at the solar panel, and electronic equipment connected to the solar panel.]
:[Caption] Security tip: Increase the security of your home power supply by installing an air gap.
{{comic discussion}}