Sagittarius A-Star's latest activity
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Sagittarius A-Star replied to the thread B Trying to calculate proper time of worldlines using rotating frames.I think you cannot integrate over 100 revolutions, because the used Born coordinates are only defined in the range ##-\pi < \phi <... -
Sagittarius A-Star replied to the thread B Trying to calculate proper time of worldlines using rotating frames.I think you are only calculating in the simple non-rotating frame and use the time-dilation factors of SR. BTW.: From this I conclude...
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Sagittarius A-Star replied to the thread B Trying to calculate proper time of worldlines using rotating frames.I think you can't use Galilean (angular) velocity addition for ##\omega_1## an ##\omega_2##.
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Sagittarius A-Star reacted to Ibix's post in the thread I Synchronizing clocks in an inertial frame if light is anisotropic with
Like.
I misread the OP. As @PeroK says in #2, you have a ##c/2## one-way speed in the A-to-B direction and an ##\infty## speed in the B-to-A... -
Sagittarius A-Star reacted to PeroK's post in the thread I Synchronizing clocks in an inertial frame if light is anisotropic with Like.
We might as well assume that ##t[A1] = t[B2] = 0##. When A receives the signal back from B, the clock reads ##t = \frac {2L}{c}##. A...
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Sagittarius A-Star reacted to Demystifier's post in the thread Collection of Science Jokes P2 with
Agree.
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Sagittarius A-Star reacted to fresh_42's post in the thread Collection of Science Jokes P2 with Like.
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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...
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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...