Recent content by x-vision

Different articles on the Internet. Still finding my way. Hmm. I thought that if the roles of "stationary" and "moving" are interchangeable, then the symmetry is implied. I guess not. Thanks

Thanks. Spacetime diagrams might be too advanced for me at this time. I guess my question was more about the symmetry of reference frames. In my mind, the distance between two bodies would be the same, irrespective of whether we look at it from the left-hand side or from the right-hand side, so...

I honestly don't understand your comment. Let me explain where I'm coming from, so you can maybe point me to my blind spot. Let's imagine that we can freeze the time on both systems at t(0). I would think that at this time the distance between the rocket and the star would be the same...

Thanks. I have fixed my questions and specified that t(0) applies to both reference frames. With this clarification, can we assume that the distance between the two reference frames stays the same when we switch the roles of "moving" and "stationary"? If the clocks are synchronized at t(0), is...

Hello, I have a couple of questions related to reference frames in Special Relativity. Let's consider a rocket that is inertially moving towards a star with a relative velocity 0.9c. I'd like to look at this example from both the rocket's and the star's perspectives. In the reference frame of...

True. I automatically assumed an "undular" light propagation rather than corpuscular ;).

This is incorrect. If rocket B emits two light rays towards A and C, the light ray towards A will arrive first and the one towards C will arrive second. The time intervals will be x/c+u for B-to-A and x/c-u for B-to-C. According to Galilean relativity, time is absolute, not relative. This...

Einstein's example can be summarized as follows: given the constancy of the speed of light in all reference frames, clocks cannot be simultaneously synchronized in both a stationary and a moving reference frames Since the speed of light is constant in the stationary reference frame, the time...

Yup. That's exactly what I'm thinking ;).

Aha. Have you considered that the Fizeau and the Michelson-Morley experiments are actually equivalent? Both measured the speed of light in a moving optical medium but did it differently: Fizeau measured the speed of light as light passes through the moving medium (water) Michelson-Morley...

If we assume that: the Earth has an atmosphere the Michelson-Morley experiment measured an isotropic speed of light inside the atmosphere We can conclude that the speed of light inside the atmosphere remains isotropic while the Earth is moving through space. But if we assume that: the Earth...

The upper speed limit follows from the Lorentz transformation. The Lorentz factor becomes an imaginary number for speeds higher than the speed of light.