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ktmsud's latest activity
ktmsud
reacted to
DrGreg's post
in the thread
B
General Relativity and Universal Gravitational Constant
with
Informative
.
It's perhaps also pointing out that in relativity the concept of "acceleration" (specifically "proper acceleration") is a geometrical...
Feb 29, 2024
ktmsud
reacted to
pervect's post
in the thread
B
General Relativity and Universal Gravitational Constant
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Informative
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I'd like to "upvote" A.T.'s observation, force / unit mass is the same thing as acceleration. This illustrates that forces don't really...
Feb 29, 2024
ktmsud
reacted to
PeroK's post
in the thread
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General Relativity and Universal Gravitational Constant
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Whatever theory you use, the attraction between two masses is measurable. See, for example...
Feb 29, 2024
ktmsud
reacted to
Ibix's post
in the thread
B
General Relativity and Universal Gravitational Constant
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Informative
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This observation is sometimes called the Correspondence Principle, @ktmsud. New theories usually explain more phenomena than old ones...
Feb 29, 2024
ktmsud
reacted to
A.T.'s post
in the thread
B
General Relativity and Universal Gravitational Constant
with
Informative
.
Even in Newtonian Mechanics you can define G without mentioning a "force", based on the acceleration of a falling test mass. Those...
Feb 29, 2024
ktmsud
reacted to
Ibix's post
in the thread
B
General Relativity and Universal Gravitational Constant
with
Informative
.
You can derive Einstein's Field Equations in various ways, but you end up with an unknown constant in the maths. So you do something...
Feb 29, 2024
ktmsud
reacted to
renormalize's post
in the thread
B
General Relativity and Universal Gravitational Constant
with
Informative
.
Yes he did. One piece (the time-time component) of the 10 Einstein field equations in general relativity matches, for weak gravitational...
Feb 28, 2024
ktmsud
reacted to
Ibix's post
in the thread
B
General Relativity and Universal Gravitational Constant
with
Like
.
You have it the wrong way around. ##G## appears in Newton's law of gravity because Newton's laws are an approximation to relativity...
Feb 28, 2024
ktmsud
reacted to
Dale's post
in the thread
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General Relativity and Universal Gravitational Constant
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In any equation ##G## appears because you are using units that require it, such as SI units.
Feb 28, 2024
ktmsud
reacted to
berkeman's post
in the thread
B
General Relativity and Universal Gravitational Constant
with
Haha
.
You have a peculiar sense of manners when asking others for their help. Just sayin'...
Feb 28, 2024
ktmsud
reacted to
berkeman's post
in the thread
B
General Relativity and Universal Gravitational Constant
with
Haha
.
The issue is that we don't allow that type of statement here at PF when starting a thread. We always require explicit references when...
Feb 28, 2024
ktmsud
reacted to
Hill's post
in the thread
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General Relativity and Universal Gravitational Constant
with
Like
.
But G is not a "constant of force equation". It is rather a constant of gravitational acceleration: $$a=\frac {GM} {r^2}$$ It relates...
Feb 28, 2024
ktmsud
reacted to
berkeman's post
in the thread
B
General Relativity and Universal Gravitational Constant
with
Skeptical
.
LOL. YouTube videos are not an acceptable source. So many things to learn about how PF works! :smile: (from the Rules under INFO at...
Feb 28, 2024
ktmsud
reacted to
Dale's post
in the thread
B
General Relativity and Universal Gravitational Constant
with
Like
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As I said above, it is simply a matter of the units. Nothing more. ##G## is simply a unit conversion factor. In SI units, Newton’s...
Feb 28, 2024
ktmsud
reacted to
Dale's post
in the thread
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General Relativity and Universal Gravitational Constant
with
Like
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Although they are not acceptable sources for answers we usually permit them as sources for questions, as the OP did here. It is...
Feb 28, 2024
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