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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 (the same as energy/mass), and the multiplication factor would just be c.
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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.
131:, Appendix F, which uses c = G =1? This is probably the most widely used graduate textbook on general relativity in the English-speaking world. Can anyone cite a major textbook which used either of the other two conventions mentioned by Joke137? ---
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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.
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I extensively edited the August 2006 version of this article and had been monitoring it for bad edits, but I am leaving the WP and am now abandoning this article to its fate.
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Yes, 8πG is another common convention, as is 16πG=1. This is problematic. My impression is that the most common modern convention is 8πG=1, but I could be mistaken. –
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There actually are several different systems involved here. Your "sometimes" and the "sometimes" starting the second paragaph of the article are clues to that fact.
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I went through and added the SI units and conversion factors to the table (a major edit at least in terms of work).
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Just wanted to provide notice that I am only responsible (in part) for the last version I edited; see
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I believe there should be a entry for converting SI charge units in the official conversion table.
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charge of electron = 1.60*10^-19 coulomb * 8.62*10^-18 m/coulomb = 1.38*10^-36 m = 1.38*10^-34 cm
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In situations involving electrical units, we add the constraint that the quantity 4πε
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235:= sqrt(G / (4 * Pi * electric constant * c^4)) = 8.61667791 × 10-18 m / coulomb
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If you wish to start a new discussion or revive an old one, please do so on the
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Using google calculator, I get for the conversion constant:
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question: what source should be used for constant values?
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Good luck in your search for information, regardless!---
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charge of electron = 1.381*10^-34 cm (MTW back cover)
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228:{\displaystyle {\sqrt {G/4\pi \epsilon _{0}c^{4}}}}
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