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Line 232: − ::(Your footnote about the units is bogus. SI units are not arbitrary, since eg Joules can be derived from other SI units including kilograms, metres and seconds. Therefore, the relationship to light ''is'' (purported to be) a natural one.)--[[User:CPalmer|CPalmer]] 11:00, 29 March 2012 (EDT)+ + + + + + + + +
→...purports to relate all matter to light
:But the constant applied in this case is the (square of the) speed of light! Are you saying that that is a coincidence? If so, why not just say "E=mc"?--[[User:CPalmer|CPalmer]] 10:57, 29 March 2012 (EDT)
:But the constant applied in this case is the (square of the) speed of light! Are you saying that that is a coincidence? If so, why not just say "E=mc"?--[[User:CPalmer|CPalmer]] 10:57, 29 March 2012 (EDT)
::no, of course not, but we could write, e.g., Eε<sub>0</sub> = m/μ<sub>0</sub>: the relationship is given between mass and energy... [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)
::no, of course not, but we could write, e.g., Eε<sub>0</sub> = m/μ<sub>0</sub>: the relationship is given between mass and energy... [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)
== Misleading footnote ==
::(Your footnote about the units is bogus. SI units are not arbitrary, since eg Joules can be derived from other SI units including kilograms, metres and seconds. Therefore, the relationship to light ''is'' (purported to be) a natural one.)--[[User:CPalmer|CPalmer]] 11:00, 29 March 2012 (EDT)
Which footnote about units? [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)
Which footnote about units? [[User:AugustO|AugustO]] 11:04, 29 March 2012 (EDT)
Ah, I see, no, not ''my'' footnote. The text was inserted by [[User:GregG/RSS_6#Mon.2C_26_Mar_2012_18:05:11_GMT_.28edit_by_MihailD.29_2|MihailD]], and obviously the equation holds in other systems, too. [[User:AugustO|AugustO]] 11:10, 29 March 2012 (EDT)
Ah, I see, no, not ''my'' footnote. The text was inserted by [[User:GregG/RSS_6#Mon.2C_26_Mar_2012_18:05:11_GMT_.28edit_by_MihailD.29_2|MihailD]], and obviously the equation holds in other systems, too. [[User:AugustO|AugustO]] 11:10, 29 March 2012 (EDT)
I took out the main part of the footnote: it should be obvious that in a physical equation only compatible physical units can be used, and that otherwise conversion factors have to be introduced. But there is no problem, if we have c in feet/h, m in pounds, and E in pound*feet²/h²
[[User:AugustO|AugustO]] 11:30, 29 March 2012 (EDT)