- #1
PhiJ
- 44
- 0
I have been reading http://en.wikipedia.org/wiki/Planck_units
Why do they use Newton's universal gravitational constant, when that is a low gravity approximation and general relativity is what it used to work things out?
Why do they use Newton's universal gravitational constant, when that is a low gravity approximation and general relativity is what it used to work things out?