Talk:2566: Decorative Constants - Revision history

FaviFake at 09:59, 6 April 2025

2025-04-06T09:59:13Z

2025-04-05T22:12:08Z

2023-08-20T03:18:35Z

2022-05-29T17:59:56Z

2022-04-06T02:47:50Z

2022-01-25T19:13:54Z

asking a question

2022-01-17T21:16:51Z

Double Struck D usage for Domain

2022-01-13T18:26:34Z

2022-01-13T18:24:26Z

2022-01-12T17:23:58Z

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 It actually happened. The White House's tariff formula includes two constants that cancel each other out when multiplied together. Whyyyyyy [[Special:Contributions/162.158.186.208|162.158.186.208]] 22:12, 5 April 2025 (UTC)
 ==Count down clock==
 See [[Countdown in header text]]. Discussion has been moved here [[Talk:Countdown_in_header_text]]. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 11:10, 12 January 2022 (UTC)

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 :The r terms are used in describing things like water treatment plants or dialysis machines, where you're trying to use fluid flow to regulate some solute.  If fluid balance is large, it means the "tank" is going to empty or dry out.  I guess T is the rate at which this happens.  Not really a math thing, more of an engineering thing, seems to me.
 ==Count down clock==
 See [[Countdown in header text]]. Discussion has been moved here [[Talk:Countdown_in_header_text]]. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 11:10, 12 January 2022 (UTC)

← Older revision		Revision as of 03:18, 20 August 2023
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	I've seen the double-struck capital "D" used commonly as a symbol for the Domain of a function (While the double-struck "R" was used for the range in that context) [[Special:Contributions/162.158.63.243\|162.158.63.243]] 21:16, 17 January 2022 (UTC)		I've seen the double-struck capital "D" used commonly as a symbol for the Domain of a function (While the double-struck "R" was used for the range in that context) [[Special:Contributions/162.158.63.243\|162.158.63.243]] 21:16, 17 January 2022 (UTC)
		+	:Any use of double-struck or bold capital R to mean something besides the set of real numbers can be considered nonstandard, like using + to represent a non-commutative function or using a fraktur lowercase c to represent anything other than the cardinality of the continuum. It happens of course, but it's not any kind of standard. [[User:EebstertheGreat\|EebstertheGreat]] ([[User talk:EebstertheGreat\|talk]]) 03:18, 20 August 2023 (UTC)

	Does anybody know enough math to figure out what that equation is supposed to do? I really want to delete that tag.[[User:New editor\|New editor]] ([[User talk:New editor\|talk]]) 19:13, 25 January 2022 (UTC)		Does anybody know enough math to figure out what that equation is supposed to do? I really want to delete that tag.[[User:New editor\|New editor]] ([[User talk:New editor\|talk]]) 19:13, 25 January 2022 (UTC)

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 : And the resulting equation is then just e=m - or m=e which is beautiful and profound.  "Mass is Energy".  Without the complications, you stop thinking of it as a PROCESS for converting one into the other and get the more profound point that Mass and Energy are the exact same thing.  [[User:SteveBaker|SteveBaker]] ([[User talk:SteveBaker|talk]]) 03:33, 11 January 2022 (UTC)
 : I respectfully disagree. The c² isn't decorative; mc² is a measure of energy and m is not. e=mc², like f=ma, still works even if you change the size of any of the basic units (of length, time, mass) from which the units of energy and force are derived. As I see it, an equation that ties you to any definition of unit size is less profound, not more. [[User:Tom239|Tom239]] ([[User talk:Tom239|talk]]) 17:21, 12 January 2022 (UTC)
 I think the 1/2 in the drag equation is intuitive. I understand that it is technically superfluous, but F=Pd*A and Pd=1/2*rho*u^2 so the 1/2 carries over intuitively. {{unsigned ip|172.70.98.15}}

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 Does anybody know enough math to figure out what that equation is supposed to do? I really want to delete that tag.[[User:New editor|New editor]] ([[User talk:New editor|talk]]) 19:13, 25 January 2022 (UTC)
 ==Count down clock==
 See [[Countdown in header text]]. Discussion has been moved here [[Talk:Countdown_in_header_text]]. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 11:10, 12 January 2022 (UTC)

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 :If Cd had a unit, say it was an energy which represented some relevant value for a given material, then it would not be correct to say that it was half as much, just because 1/2 came into the equation. But if it has no units, then it is just a constant saying something about the material, and then the 1/2 could in principle be absorbed without changing anything. But as stated above 1/2 actually has physical meaning in the way it enters the equation. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 10:44, 12 January 2022 (UTC)
-:It doesn't make any difference. For instance, Coulomb's law works fine whether we write it F = -q<sub1</subq<sub>2</sub>/(4πε<sub>0</sub>r<sup>2</sup>) or F = -kq<sub1</subq<sub>2</sub>/</sub>r<sup>2</sup>. Similarly, if we had a factor of 2 in the gas law for some reason, that would just change the values of the gas constants.
+:It doesn't make any difference. For instance, Coulomb's law works fine whether we write it F = -q<sub>1</sub>q<sub>2</sub>/(4πε<sub>0</sub>r<sup>2</sup>) or F = -kq<sub>1</sub>q<sub>2</sub>/r<sup>2</sup>. Similarly, if we had a factor of 2 in the gas law for some reason, that would just change the values of the gas constants.
 ==Count down clock==
 See [[Countdown in header text]]. Discussion has been moved here [[Talk:Countdown_in_header_text]]. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 11:10, 12 January 2022 (UTC)