Talk:730: Circuit Diagram - Revision history

RoAwesomeFace at 13:37, 8 January 2026

2026-01-08T13:37:20Z

Bicorn: forgot to sign it

2025-11-23T03:01:17Z

forgot to sign it

Bicorn: suggestion on the "3 liters" feedthrough

2025-11-23T03:00:20Z

suggestion on the "3 liters" feedthrough

Firestar233 at 05:19, 16 February 2025

2025-02-16T05:19:08Z

172.70.127.53: alternative explanation for the "YES" resistor.

2023-03-08T07:39:14Z

alternative explanation for the "YES" resistor.

ColorfulGalaxy: The map scale can affect a lot of things, while the compass points may imply that there is magnetic field running upward along this picture.

2023-01-12T17:04:44Z

The map scale can affect a lot of things, while the compass points may imply that there is magnetic field running upward along this picture.

Toby1: comment on the holy water beaker

2023-01-12T03:10:43Z

comment on the holy water beaker

172.70.86.68 at 16:05, 23 January 2022

2022-01-23T16:05:25Z

172.70.162.77 at 15:34, 22 January 2022

2022-01-22T15:34:02Z

162.158.159.73: Caution: Balloon

2022-01-22T13:14:22Z

Caution: Balloon

← Older revision		Revision as of 13:37, 8 January 2026
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	Might the "3 liters" label on the feedthrough be a joke on how "feedthrough" can be misread as "feed trough"? [[User:Bicorn\|Bicorn]] ([[User talk:Bicorn\|talk]]) 03:01, 23 November 2025 (UTC)		Might the "3 liters" label on the feedthrough be a joke on how "feedthrough" can be misread as "feed trough"? [[User:Bicorn\|Bicorn]] ([[User talk:Bicorn\|talk]]) 03:01, 23 November 2025 (UTC)
		+
		+	; "Hire someone to open and close switch real fast."
		+
		+	As an electronics student in Easter Europe, I have heard a couple of professors who, when talking about oscillators or power amplifiers or anything requiring a switch which periodically opens and closes, would hand-wave the particular structure and real functioning of that component (only representing it as a switch in circuit diagrams) by saying that "you can hire an (old) Chinese man to open and close it for you really fast", as a joke.
		+
		+	Have any anglophone electronics students or engineers heard any similar phrases, and if so, could they have inspired this section of the image? [[User:RoAwesomeFace\|RoAwesomeFace]] ([[User talk:RoAwesomeFace\|talk]]) 13:37, 8 January 2026 (UTC)

← Older revision		Revision as of 03:01, 23 November 2025
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	; 3 liters		; 3 liters

−	Might the "3 liters" label on the feedthrough be a joke on how "feedthrough" can be misread as "feed trough"?	+	Might the "3 liters" label on the feedthrough be a joke on how "feedthrough" can be misread as "feed trough"? [[User:Bicorn\|Bicorn]] ([[User talk:Bicorn\|talk]]) 03:01, 23 November 2025 (UTC)

← Older revision		Revision as of 03:00, 23 November 2025
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	It was conjectured but unconfirmed that the constant "4 times pi" was once called omega. As the pi resistor in the comic was missing the "Ω" symbol, this "pi" may be a pun on "0.25Ω" to the power of [<span>[[285\|citation needed]]</span>]. The "e with dieresis" may also be related. --[[User:ColorfulGalaxy\|ColorfulGalaxy]] ([[User talk:ColorfulGalaxy\|talk]]) 17:04, 12 January 2023 (UTC)		It was conjectured but unconfirmed that the constant "4 times pi" was once called omega. As the pi resistor in the comic was missing the "Ω" symbol, this "pi" may be a pun on "0.25Ω" to the power of [<span>[[285\|citation needed]]</span>]. The "e with dieresis" may also be related. --[[User:ColorfulGalaxy\|ColorfulGalaxy]] ([[User talk:ColorfulGalaxy\|talk]]) 17:04, 12 January 2023 (UTC)
		+
		+	; 3 liters
		+
		+	Might the "3 liters" label on the feedthrough be a joke on how "feedthrough" can be misread as "feed trough"?

@@ Line 24: / Line 24: @@
 I think the attempt to explain every single piece of the comic is rather silly. The humor largely draws from the absurdity of the diagram, and that can probably be summarized without going into detail about the possible references of each individual component. [[Special:Contributions/199.27.130.180|199.27.130.180]] 03:22, 26 November 2013 (UTC)
 : I disagree. The joke works on multiple levels, both the absurdity of the circuit, and the smaller parts of which it is comprised. [[User:Hydroksyde|Hydroksyde]] ([[User talk:Hydroksyde|talk]]) 02:40, 21 April 2014 (UTC)
 I concur with KopaLeo - I got the same answer for the resistance of the grid of resistors - about 0.748 when rounded. What a problem!

← Older revision		Revision as of 07:39, 8 March 2023
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	Isn't the "YES" resistor a reference to the anecdote of how John Lennon and Yoko Ono met? That's what I thought when I saw it, but then, I kinda like The Beatles a bit. [[Special:Contributions/200.70.22.74\|200.70.22.74]] 12:27, 16 September 2013 (UTC)		Isn't the "YES" resistor a reference to the anecdote of how John Lennon and Yoko Ono met? That's what I thought when I saw it, but then, I kinda like The Beatles a bit. [[Special:Contributions/200.70.22.74\|200.70.22.74]] 12:27, 16 September 2013 (UTC)
		+	Another alternative for the "YES" resistor is a pun: if one was being resistant to an idea you would expect to get "NO' from them. This resistor however says "YES". [[Special:Contributions/172.70.127.53\|172.70.127.53]] 07:39, 8 March 2023 (UTC)Verisimilidude

	I think the attempt to explain every single piece of the comic is rather silly. The humor largely draws from the absurdity of the diagram, and that can probably be summarized without going into detail about the possible references of each individual component. [[Special:Contributions/199.27.130.180\|199.27.130.180]] 03:22, 26 November 2013 (UTC)		I think the attempt to explain every single piece of the comic is rather silly. The humor largely draws from the absurdity of the diagram, and that can probably be summarized without going into detail about the possible references of each individual component. [[Special:Contributions/199.27.130.180\|199.27.130.180]] 03:22, 26 November 2013 (UTC)

← Older revision		Revision as of 17:04, 12 January 2023
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	Caveat: I am approaching this as British English (I hope!) but I extensively looked to see if this was one of those cases* US English differs and failed to find anything at all about it. * - by complete fluke, I wrote "this was one of those cases", which could have been "'''one''' of those case'''s''' which '''was'''", where the plurality agreement does not not ask for "were". Well, except in a certain dialect ("He were, she were, they were, we were ...") not far from another area that goes the other way ("He was, she was, they was, we was, ..."), but that doesn't help matters. ;) [[Special:Contributions/172.70.86.68\|172.70.86.68]] 16:05, 23 January 2022 (UTC)		Caveat: I am approaching this as British English (I hope!) but I extensively looked to see if this was one of those cases* US English differs and failed to find anything at all about it. * - by complete fluke, I wrote "this was one of those cases", which could have been "'''one''' of those case'''s''' which '''was'''", where the plurality agreement does not not ask for "were". Well, except in a certain dialect ("He were, she were, they were, we were ...") not far from another area that goes the other way ("He was, she was, they was, we was, ..."), but that doesn't help matters. ;) [[Special:Contributions/172.70.86.68\|172.70.86.68]] 16:05, 23 January 2022 (UTC)
		+
		+	; Pi resistor
		+
		+	It was conjectured but unconfirmed that the constant "4 times pi" was once called omega. As the pi resistor in the comic was missing the "Ω" symbol, this "pi" may be a pun on "0.25Ω" to the power of [<span>[[285\|citation needed]]</span>]. The "e with dieresis" may also be related. --[[User:ColorfulGalaxy\|ColorfulGalaxy]] ([[User talk:ColorfulGalaxy\|talk]]) 17:04, 12 January 2023 (UTC)

← Older revision		Revision as of 03:10, 12 January 2023
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	I feel like I should point out that putting a ground connection in holy water probably creates {{w\|Holy Ground}} [[Special:Contributions/108.162.212.197\|108.162.212.197]] 11:36, 26 March 2014 (UTC)		I feel like I should point out that putting a ground connection in holy water probably creates {{w\|Holy Ground}} [[Special:Contributions/108.162.212.197\|108.162.212.197]] 11:36, 26 March 2014 (UTC)
		+
		+	: Might also be a reference to demineralised (demin - holy) water [[User:Toby1\|toby1]] ([[User talk:Toby1\|talk]]) 03:10, 12 January 2023 (UTC)

	To center of Sun could possibly be another map reference. [[Special:Contributions/108.162.250.202\|108.162.250.202]] 01:08, 19 November 2014 (UTC)		To center of Sun could possibly be another map reference. [[Special:Contributions/108.162.250.202\|108.162.250.202]] 01:08, 19 November 2014 (UTC)

← Older revision		Revision as of 16:05, 23 January 2022
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	The line of the balloon also crosses another circuit, which could be a hazard in itself (flying kites or balloons near high-voltage lines is quite dangerous, and helium-filled balloons are often forbidden in railway stations with overhead catenary). This may also be what the "caution" arrow is indicating. [[Special:Contributions/162.158.159.73\|162.158.159.73]] 13:14, 22 January 2022 (UTC)		The line of the balloon also crosses another circuit, which could be a hazard in itself (flying kites or balloons near high-voltage lines is quite dangerous, and helium-filled balloons are often forbidden in railway stations with overhead catenary). This may also be what the "caution" arrow is indicating. [[Special:Contributions/162.158.159.73\|162.158.159.73]] 13:14, 22 January 2022 (UTC)
	:By my reading, the ballon is anchored ''at'' the junction between the caution-bend and the vertical one. I think there's danger of the balloon rising to touch the solder-blob, or other bits above it, but I think its already electrically bonded at the non-balloon end (insofar as 'reality' can be interpreted). Yes, there's possible danger (and you IRL point is true) but it's elsewhere, if not almost everywhere else..! [[Special:Contributions/172.70.162.77\|172.70.162.77]] 15:34, 22 January 2022 (UTC)		:By my reading, the ballon is anchored ''at'' the junction between the caution-bend and the vertical one. I think there's danger of the balloon rising to touch the solder-blob, or other bits above it, but I think its already electrically bonded at the non-balloon end (insofar as 'reality' can be interpreted). Yes, there's possible danger (and you IRL point is true) but it's elsewhere, if not almost everywhere else..! [[Special:Contributions/172.70.162.77\|172.70.162.77]] 15:34, 22 January 2022 (UTC)
		+
		+	While I won't revert [https://www.explainxkcd.com/wiki/index.php?title=730:_Circuit_Diagram&oldid=225428 this minor 'correction'], I disagree that it was wrong before. "Types of junction" is a plural-phrase already. "One type of junction" vs. "(Two/Many/No) types of junction". (It is the type(s) that is/are singular/plural, what they then are ''of'' is similar to a postpositive adjective, but in propositional form. "Types of junctions" reads clunkily.
		+
		+	Caveat: I am approaching this as British English (I hope!) but I extensively looked to see if this was one of those cases* US English differs and failed to find anything at all about it. * - by complete fluke, I wrote "this was one of those cases", which could have been "'''one''' of those case'''s''' which '''was'''", where the plurality agreement does not not ask for "were". Well, except in a certain dialect ("He were, she were, they were, we were ...") not far from another area that goes the other way ("He was, she was, they was, we was, ..."), but that doesn't help matters. ;) [[Special:Contributions/172.70.86.68\|172.70.86.68]] 16:05, 23 January 2022 (UTC)

← Older revision		Revision as of 15:34, 22 January 2022
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	The line of the balloon also crosses another circuit, which could be a hazard in itself (flying kites or balloons near high-voltage lines is quite dangerous, and helium-filled balloons are often forbidden in railway stations with overhead catenary). This may also be what the "caution" arrow is indicating. [[Special:Contributions/162.158.159.73\|162.158.159.73]] 13:14, 22 January 2022 (UTC)		The line of the balloon also crosses another circuit, which could be a hazard in itself (flying kites or balloons near high-voltage lines is quite dangerous, and helium-filled balloons are often forbidden in railway stations with overhead catenary). This may also be what the "caution" arrow is indicating. [[Special:Contributions/162.158.159.73\|162.158.159.73]] 13:14, 22 January 2022 (UTC)
		+	:By my reading, the ballon is anchored ''at'' the junction between the caution-bend and the vertical one. I think there's danger of the balloon rising to touch the solder-blob, or other bits above it, but I think its already electrically bonded at the non-balloon end (insofar as 'reality' can be interpreted). Yes, there's possible danger (and you IRL point is true) but it's elsewhere, if not almost everywhere else..! [[Special:Contributions/172.70.162.77\|172.70.162.77]] 15:34, 22 January 2022 (UTC)

← Older revision		Revision as of 13:14, 22 January 2022
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	Could wimp also stands for {{w\|weakly interacting massive particles}}, a candidate of {{w\|dark matter}}? Then it will reasonably omit the electromagnetic interactions running in this circuit diagram.--[[User:Lamty101\|Lamty101]] ([[User talk:Lamty101\|talk]]) 14:13, 2 July 2020 (UTC)		Could wimp also stands for {{w\|weakly interacting massive particles}}, a candidate of {{w\|dark matter}}? Then it will reasonably omit the electromagnetic interactions running in this circuit diagram.--[[User:Lamty101\|Lamty101]] ([[User talk:Lamty101\|talk]]) 14:13, 2 July 2020 (UTC)
		+
		+	; Balloon
		+
		+	The line of the balloon also crosses another circuit, which could be a hazard in itself (flying kites or balloons near high-voltage lines is quite dangerous, and helium-filled balloons are often forbidden in railway stations with overhead catenary). This may also be what the "caution" arrow is indicating. [[Special:Contributions/162.158.159.73\|162.158.159.73]] 13:14, 22 January 2022 (UTC)