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Re: SI and nothing else



Take the case of the speed of light. 1 second is equal to 3x10^8 meters,
or one second is equivalent to 3x10^8 meters.

On Thu, 16 Oct 1997, LUDWIK KOWALSKI wrote:

On Oct. 16 James W. Wheeler" <jwheeler@eagle.lhup.edu> wrote:

hbar=c=G=1
hbar*c =197.3 MeV*fm=1 gives an equivalence between energy and distance
c=3x10^8 m/s = 1 gives an equivalence between time and distance
G=6.67e-11 m^3/(kg*s^2)=1 gives an equivalence between mass and distance
e.g
1 m = (1/3x10^8) s
1 m = 10^15/(197.3 MeV)=10^28/(1.6*197.3 J)
1 m = (9/6.67)x10^27 kg

(if I've done the math right!)
The best source I know of for this stuff is the book by Misner, Thorne,
and Wheeler "Gravitation".

The units do not balance. No time to read the reference now. What does it
mean "an equivalence between A and B"?
Ludwik Kowalski