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Potential

as it is now, the two entries "elecitric potential" and "potential" (the very last) are identical. would it not make much more sense to interpret the second potential as gravitational potential? then its SI dimension would be [L² T^-2] (the same as energy/mass), and the multiplication factor would just be c^-2. --Diogenes2000 (talk) 02:51, 30 December 2012 (UTC)[reply]

Conversion factors between meter, kilogram, second, coulomb and kelvin

Here you have all needed conversion factors that covers all SI base units, and if not possible, their unique elements:

into m

G/c^2 [m/kg]
c [m/s]
((G/(4*pi*(electric constant)))^0.5)/c^2 [m/C]
(G*k)/c^4 [m/K]

into kg

c^2/G [kg/m]
c^3/G [kg/s]
1/(G*4*pi*(electric constant))^0.5 [kg/C]
k/c^2 [kg/K]

into s

1/c [s/m]
G/c^3 [s/kg]
((G/(4*pi*(electric constant)))^0.5)/c^3 [s/C]
(G*k)/c^5 [s/K]

into C

c^2/((G/(4*pi*(electric constant)))^0.5) [C/m]
(G*4*pi*(electric constant))^0.5 [C/kg]
c^3/((G/(4*pi*(electric constant)))^0.5) [C/s]
(k*(G*4*pi*(electric constant))^0.5)/c^2 [C/K]

into K

c^4/(G*k) [K/m]
c^2/k [K/kg]
c^5/(G*k) [K/s]
c^2/(k*(G*4*pi*(electric constant))^0.5) [K/C]

All these units represents nothing else than distance along dimension, that makes SI redundant in comparison to geometrized units. I added all these abovementioned factors after proper formatting to article. They can be verified in Google calculator.

This all is exactly equivalent to dividing of one Planck unit by another Planck unit, while using their direct SI values. 83.30.150.203 (talk) 08:20, 20 January 2024 (UTC)[reply]

Geometric quantities

I removed an entire section with a table of conversions. @Anubub reverted the change, but I took it out again based on WP:BURDEN.

The table entries need a reference. If the entries are trivial, then we don't need the table. If the entries are WP:NOTABLE then they need a reference.

In addition, the practical issue is that entries in the table keep being changed and we have no justification for reverting such changes because we have no reference. Johnjbarton (talk) 16:09, 24 June 2024 (UTC)[reply]

@@ Line 21: / Line 21: @@
 {{Archives|banner=yes|age=90}}
-==Edits==
+== Potential ==
-I've made the edits indicated above, having gotten no comments. The conversion table from Wald is for cgs units, unfortunately. This would only matter for charge and related electrical units. I've marked up the table to indicate it's a cgs table as the simplest course of action to fix the issue.
+as it is now, the two entries "elecitric potential" and "potential" (the very last) are identical. would it not make much more sense to interpret the second potential as gravitational potential? then its SI dimension would be [''L''<sup>2</sup> ''T''<sup>-2</sup>] (the same as energy/mass), and the multiplication factor would just be c<sup>-2</sup>. --[[User:Diogenes2000|Diogenes2000]] ([[User talk:Diogenes2000|talk]]) 02:51, 30 December 2012 (UTC)
-consistency checks:
-:1 statcolumb * sqrt(G)/c^2 -> 2.87 * 10^-25 cm = 2.87* 10^-27 m
-:1 coulomb -> 8.62 * 10^-18 m (from MKS table)
-:1 statcolumb / 1 coulomb = 3.33*10^-10
+==Conversion factors between meter, kilogram, second, coulomb and kelvin==
-consistent with http://en.wikipedia.org/wiki/Statcoulomb
+Here you have all needed conversion factors that covers all SI base units, and if not possible, their unique elements:
-This is incosistent with the wiki [[cgs]] page, however!
+into m
-more consistency checks:
+*G/c^2 [m/kg]
-:charge of electron = 1.381*10^-34 cm (MTW back cover)
+*c [m/s]
-:charge of electron = 1.60*10^-19 coulomb * 8.62*10^-18 m/coulomb = 1.38*10^-36 m = 1.38*10^-34 cm
+*((G/(4*pi*(electric constant)))^0.5)/c^2 [m/C]
+*(G*k)/c^4 [m/K]
+into kg
-[[User:Pervect|Pervect]] 22:41, 29 July 2006 (UTC)
+*c^2/G [kg/m]
-==More edits==
+*c^3/G [kg/s]
-I went through and added the SI units and conversion factors to the table (a major edit at least in terms of work).
+*1/(G*4*pi*(electric constant))^0.5 [kg/C]
+*k/c^2 [kg/K]
+into s
-I cross-checked the conversion formulas for SI units with google calculator. Examples (cut and paste the following formula into google calc). epsilon_0 is "electric constant" in Google.
+*1/c [s/m]
-:(ampere)*(sqrt(G/(4*pi*electric constant)))/c^3=
+*G/c^3 [s/kg]
-:(tesla)*(sqrt(G*(4*pi*electric constant))/c)=
-:(volt)*(sqrt(G*(4*pi*electric constant))/c^2)=
+*((G/(4*pi*(electric constant)))^0.5)/c^3 [s/C]
+*(G*k)/c^5 [s/K]
- <!-- Template:Unsigned --><small class="autosigned">—&nbsp;Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Pervect|Pervect]] ([[User talk:Pervect#top|talk]] • [[Special:Contributions/Pervect|contribs]]) 01:45, 4 August 2006 (UTC)</small>
+into C
-==Introduction==
-Hello Pervect
+*c^2/((G/(4*pi*(electric constant)))^0.5) [C/m]
-It seems that the sentence is incomplete:
+*(G*4*pi*(electric constant))^0.5 [C/kg]
+*c^3/((G/(4*pi*(electric constant)))^0.5) [C/s]
+*(k*(G*4*pi*(electric constant))^0.5)/c^2 [C/K]
+into K
-In situations involving electrical units, we add the constraint that the quantity 4πε<sub>0</sub>, where ε<sub>0</sub> is [[vacuum permittivity]]. [[Special:Contributions/83.30.48.117|83.30.48.117]] ([[User talk:83.30.48.117|talk]]) 18:00, 28 October 2009 (UTC)
+*c^4/(G*k) [K/m]
-as it is now, the two entries "elecitric potential" and "potential" (the very last) are identical. would it not make much more sense to interpret the second potential as gravitational potential? then its SI dimension would be [''L''<sup>2</sup> ''T''<sup>-2</sup>] (the same as energy/mass), and the multiplication factor would just be c<sup>-2</sup>. --[[User:Diogenes2000|Diogenes2000]] ([[User talk:Diogenes2000|talk]]) 02:50, 30 December 2012 (UTC)
+*c^2/k [K/kg]
+*c^5/(G*k) [K/s]
+*c^2/(k*(G*4*pi*(electric constant))^0.5) [K/C]
+All these units represents nothing else than distance along dimension, that makes SI redundant in comparison to geometrized units. I added all these abovementioned factors after proper formatting to article. They can be verified in Google calculator.
-== Potential ==
+This all is exactly equivalent to dividing of one [[Planck unit]] by another [[Planck unit]], while using their direct SI values. [[Special:Contributions/83.30.150.203|83.30.150.203]] ([[User talk:83.30.150.203|talk]]) 08:20, 20 January 2024 (UTC)
-as it is now, the two entries "elecitric potential" and "potential" (the very last) are identical. would it not make much more sense to interpret the second potential as gravitational potential? then its SI dimension would be [''L''<sup>2</sup> ''T''<sup>-2</sup>] (the same as energy/mass), and the multiplication factor would just be c<sup>-2</sup>. --[[User:Diogenes2000|Diogenes2000]] ([[User talk:Diogenes2000|talk]]) 02:51, 30 December 2012 (UTC)
+== Geometric quantities ==
+I removed an entire section with a table of conversions. @[[User:Anubub|Anubub]] reverted the change, but I took it out again based on [[WP:BURDEN]].
+The table entries need a reference. If the entries are trivial, then we don't need the table. If the entries are [[WP:NOTABLE]] then they need a reference.
+In addition, the practical issue is that entries in the table keep being changed and we have no justification for reverting such changes because we have no reference. [[User:Johnjbarton|Johnjbarton]] ([[User talk:Johnjbarton|talk]]) 16:09, 24 June 2024 (UTC)