Sagittarius A-Star's latest activity
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Sagittarius A-Star reacted to renormalize's post in the thread I Maxwell stress tensor with
Informative.
No, the two expressions ##\nabla\cdot\vec{E}## and ##\vec{E}\cdot\nabla## are very different. The first is simply the scalar quantity... -
Sagittarius A-Star replied to the thread I Synchronizing clocks in an inertial frame if light is anisotropic.No. At time t[B2] clock B receives light from clock A, that has moved only once over the distance L.
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Sagittarius A-Star replied to the thread I Synchronizing clocks in an inertial frame if light is anisotropic.Why is this given?
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Sagittarius A-Star replied to the thread B Trying to calculate proper time of worldlines using rotating frames.Minkowski ("West Coast" convention, unprimed coordinates): ##ds^2=c^2(dt)^2 -(dx)^2-(dy)^2-(dz)^2## ##ds^2=c^2(dt)^2 -(d(r...
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Sagittarius A-Star replied to the thread I Why measure the speed of light in one direction?.This must be true, because the definition of such coordinates is based on the Einstein clock synchronization, that means on the...
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Sagittarius A-Star replied to the thread I Why measure the speed of light in one direction?.That's not completely correct. Before Einstein, when the physically relevant coordinate transformation was thought to be the GT...
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Sagittarius A-Star reacted to James Hasty's post in the thread I Why measure the speed of light in one direction? with
Like.
My viewpoint is that for all inertial observers with Minkowski coordinates, Maxwell's equations posit the speed of light to be... -
Sagittarius A-Star reacted to Ibix's post in the thread I Why measure the speed of light in one direction? with Like.
You can construct Maxwell's equations in non-orthogonal coordinates if you like. Then you'll get a non-isotropic speed. As always, this...
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Sagittarius A-Star reacted to Dale's post in the thread I Why measure the speed of light in one direction? with Like.
In general, you like to try to validate your theories against experiment. However, in this case the one way speed of light is a...
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Sagittarius A-Star replied to the thread I Why measure the speed of light in one direction?.You could write Maxwell's equations in the following primed coordinates (given any inertial coordinate system x,y,z,t). $$x' = x \ \ \ \...
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Sagittarius A-Star replied to the thread I Confused about time dilation -- motion vs energy.As others mentioned, that's wrong. The following explanation in a local scenario shows, that "gravitational" time-dilation happens also...
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Sagittarius A-Star replied to the thread A 1-Way Speed of Light.Here is a similar thing, Reichenbach's ##\epsilon##...
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Sagittarius A-Star replied to the thread A 1-Way Speed of Light.As others wrote, this trick does not work. The velocity of the "reset" signal (radio or light) from O to clocks A can be split into a...
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If the OWSOL is anisotropic then increasing the distance does not help. It gives a longer time for a smaller error to accumulate. The...
