- #1
Hebob80
- 11
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The Big "G"
I've been studying relativity for a bit over 2 years now, in this time I've come across Newton's G in various equations. For example: http://en.wikipedia.org/wiki/Gravitational_time_dilation#Outside_a_non-rotating_sphere
to = tf sqrt(1 - 2GM/rc2)
It was my understanding that Einstein disproved Newton's concept of gravity, so I'm really wondering - what am I not understanding that is making it okay for us to use Newton's G?
As far as I know, G was derived by:
F= G ( m1 m2 / r2)
or
G = Fr2 / m1 m2
Which, I thought was an inaccurate statement...
Someone help
I've been studying relativity for a bit over 2 years now, in this time I've come across Newton's G in various equations. For example: http://en.wikipedia.org/wiki/Gravitational_time_dilation#Outside_a_non-rotating_sphere
to = tf sqrt(1 - 2GM/rc2)
It was my understanding that Einstein disproved Newton's concept of gravity, so I'm really wondering - what am I not understanding that is making it okay for us to use Newton's G?
As far as I know, G was derived by:
F= G ( m1 m2 / r2)
or
G = Fr2 / m1 m2
Which, I thought was an inaccurate statement...
Someone help