Editing Talk:730: Circuit Diagram

So, is the arena a new kind of comparator or something? '''[[User:Davidy22|<span title="I want you."><u><font color="purple" size="2px">David</font><font color="green" size="3px">y</font></u><sup><font color="indigo" size="1px">22</font></sup></span>]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 13:28, 18 February 2013 (UTC)

11:13, 10 April 2013 (UTC)11:13, 10 April 2013 (UTC)[[User:Jh6p|Jh6p]] ([[User talk:Jh6p|talk]])
The 3 liter capacitor could also be a ball approximately 6 inches in diameter if the seams on the ball were similar to the seams on a basketball. Perhaps a volleyball?

: "A squirrel. What it does as a circuit element is unsure."
Perhaps an allusion to a {{w|Squirrel-cage rotor|squirrel cage}}?
[[User:Wwoods|Wwoods]] ([[User talk:Wwoods|talk]]) 18:51, 22 April 2013 (UTC)

: The shape of the squirrel's tail reminds me of a {{w|hysteresis}} curve, although this is admittedly a bit of a stretch. —[[User:Scs|Scs]] ([[User talk:Scs|talk]]) 16:02, 17 November 2013 (UTC)

The 'to scale' motor would be about half a mile wide. Powering the rabbit on Gaia's vibrator (also included)? --[[User:StarChaser Tyger|StarChaser Tyger]] ([[User talk:StarChaser Tyger|talk]]) 08:40, 22 June 2013 (UTC)

I beg to differ on the flux capacitor thing, as cool as it sounds.  Since it is right above the I-90 notation, it is more likely a fork in the road (notice the road stripes indicating that you can pass at any point in the fork). [[Special:Contributions/97.87.12.114|97.87.12.114]] 02:15, 24 June 2013 (UTC)
: Oh, I'm pretty sure it's a flux capacitor.  Compare some of [http://www.google.com/search?q=flux+capacitor&tbm=isch these images].  Yes, there are several road references in this comic, but an electronic reference (especially to a ''fictional'' electronic component!) makes more sense. Also I've never seen a Y-shaped highway intersection that looked quite like that (and especially not on an interstate). —[[User:Scs|Scs]] ([[User talk:Scs|talk]]) 14:52, 17 November 2013 (UTC)

I have wasted 4 hours on the puzzle, and after wasting 9 pages of A5 paper, the resistance of that terrible resistor mess worked out to be exactly 25265/33783 ohm, or about 0.74786135 ohm.  --KopaLeo [[Special:Contributions/199.48.226.89|199.48.226.89]] 15:16, 27 June 2013 (UTC)

I think that the "fishing float" might actually be a picture of an ordinary push switch (similar to foot switches used on standard lamps). [[Special:Contributions/87.194.171.29|87.194.171.29]] 16:12, 10 July 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)

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!
--techdude
[[Special:Contributions/108.162.215.65|108.162.215.65]] 20:45, 1 January 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)

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)

The 'moral rectifier' seems like it's built of diodes which prevent current flow to the left, which might mean it's making the current 'more right'? with right being a synonym for moral?
[[Special:Contributions/108.162.212.18|108.162.212.18]] 00:15, 17 December 2014 (UTC)

;3L capacitor

The capacitor reminded me of a time I asked my dad why desktop PCs (the kind we could afford at the time were 200-500 W) couldn't have capacitors to protect them from 1-second or shorter power interruptions without the cost of a UPS. He said such a capacitor would have to be as wide and tall as a 2L pop bottle. (He didn't say how much it would weigh.) [[User:Promethean|Promethean]] ([[User talk:Promethean|talk]]) 04:38, 9 September 2014 (UTC)

Where did the claim that the EKG is atrial fibrillation come from?  At best it it hard to tell without a time scale what the ventricular rate is, but there is no evidence of extra P waves between QRS complexes that I see.  If the diagnosis is made based on the absence of P & T waves, keep in mind that some recording conditions make those (especially T) hard to see.  In an {{w|Einthoven's triangle}} arrangement, they might not show up at all above the noise.  If we had a time scale that let us calculate ventricular rate, we might be able to conclude {{w|supraventricular tachycardia}}, but I'm hesitant to make a strong claim that this is abnormal at all given that it's hand drawn and we have no scale.[[User:Djbrasier|Djbrasier]] ([[User talk:Djbrasier|talk]]) 21:07, 22 January 2015 (UTC)

Does this really belong in Category:Charts? I'm moving it to Category:Maps instead. [[User:gijobarts|gijobarts]] ([[User Talk:gijobarts|talk]]) 21:38, 19 February 2015 (UTC)

Are we really explaining "vibrator" as "a motor with an off-center weight attached to it"? [[Special:Contributions/141.101.91.97|141.101.91.97]] 06:51, 13 March 2015 (UTC)

I just spent 3 hours trying to work out the resistor nest.  I was unsuccessful. [[User:Mikemk|Mikemk]] ([[User talk:Mikemk|talk]]) 05:32, 19 March 2015 (UTC)

I did an LTSpice simulation or the resistor mess.  It looks like the 25265/33783 ohm answer above is correct.  It drew 1.3371463 amps from a one volt source. {{unsigned ip|108.162.215.133}}

Based on Randall's promotion of international standards (such as ISO 8601), it seems odd that he's using the US zigzag symbol for a resistor, rather than the IEC rectangular one. [[User:Walale12|Walale12]] ([[User talk:Walale12|talk]]) 21:37, 17 April 2015 (UTC)

Looking at the label "Tear Collector" I think it refers to the heartbeat below it, not the symbol above, suggesting that a heart (or heart break) is a likely source of tears. {{unsigned ip|108.162.216.44}}

I'm not sure why the rat's nest of resistors is considered such a difficult problem.  I would like to respectfully point out that by far the easiest way to solve it is by assuming a constant current through the network.  You can then assign a name to each of the nodes, set one of the end nodes to 0V, and solve by KCL.  Granted, there are 13 unknowns and 14 equations, but it still took less than 30 minutes to complete since they are all 1st order! archerator [[User:Archerator|Archerator]] ([[User talk:Archerator|talk]]) 04:57, 30 August 2015 (UTC)

120×72 @ 537,847: the coil symbol next to "Take off shirt while wiring this part. Ooh, yeah, I like that." is similar in appearance to chest hair in stylized comic strips. [[User:Thaledison|Thaledison]] ([[User talk:Thaledison|talk]]) 17:19, 5 October 2015 (UTC)

144×177 @ 31,753 - Could the rats next of 1 Ohm resister be a reference the the sign that Blackhat holds up in: https://xkcd.com/356/ as you can't show an infinite numbers of 1 ohm resistors in the diagram?{{unsigned ip|141.101.98.108}}

To me, the arena calls to mind the one in the Labyrinth in the Percy Jackson book series. One of the figures resembles a centaur, which was a gladiator that was defeated in said arena in the scene it is introduced. [[Special:Contributions/108.162.245.46|108.162.245.46]] 22:16, 30 October 2016 (UTC)

And here I was thinking that the fishing float was a Pokeball... [[User:Whoop whoop pull up|Whoop whoop pull up]] ([[User talk:Whoop whoop pull up|talk]]) 19:03, 28 April 2017 (UTC)

I think that "take off shirt while wiring this" could be sexual reference- there is "ooh, i like that"

:I always thought that the 555 timer was called so because of the three 5k ohm resistors...apparently it is a myth! Does anybody know the real reason?

Regarding the resistor part - I read http://mathworld.wolfram.com/ResistanceDistance.html and implemented it in Mathematica. <nowiki>g = Graph[{1 <-> 2, 1 <-> 3, 1 <-> 4, 1 <-> 5, 2 <-> 3, 2 <-> 6, 3 <-> 6, 3 <-> 7, 3 <-> 8, 4 <-> 7, 4 <-> 5, 5 <-> 9, 5 <-> 10, 6 <-> 12, 6 <-> 11, 7 <-> 12, 7 <-> 11, 7 <-> 13, 7 <-> 14, 7 <-> 9, 8 <-> 15, 8 <-> 10, 9 <-> 14, 10 <-> 15, 11 <-> 12, 11 <-> 13, 13 <-> 14, 14 <-> 15}]; m = KirchhoffMatrix[g] + 1/15; inverse = Inverse[Table[m[[i, j]], {i, 1, 15}, {j, 1, 15}]]; omega[i_, j_] := inverse[[i, i]] + inverse[[j, j]] - 2*inverse[[i, j]]; omega[1, 13]</nowiki>. The result was 167294/195327 = 0.856482...

I feel that it needs to be electronic eel more than an electric one.

Ok, who the hell did the explanation for Magic Smoke? I even had to make a <sup><nowiki>[</nowiki>[[285|REAL Citation needed]]<nowiki>]</nowiki></sup> sign to indicate that the needed citation wasn't a joke.[[Special:Contributions/108.162.242.21|108.162.242.21]] 15:02, 4 November 2019 (UTC)

Isn't it 616 not 666 citation[https://en.wikipedia.org/wiki/Number_of_the_Beast]--[[User:Galactic ascencion|Galactic ascencion]] ([[User talk:Galactic ascencion|talk]]) 07:32, 17 March 2020 (UTC)
:Well the image clearly shows a 666. Also the wikipedia article you use as a citation here, states also both numbers. The number should be most famous (at least to people who do not follow the bible/quran word by word and to specific translation) due to its use by iron maiden in the song "the number of the beast" which also states it as 666, and other pop culture references. --[[User:Lupo|Lupo]] ([[User talk:Lupo|talk]]) 10:10, 17 March 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)
@@ Line 20: / Line 20: @@
 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)
@@ Line 30: / Line 29: @@
 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)
@@ Line 84: / Line 81: @@
 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)
-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)
-; 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)