New posts in Reference Frames

If two reference frames are not moving with respect to each other, do we take into account their distance apart to determine simultaneity of events?

How do Rindler coordinates fit into special relativity?

How is it possible for the same force to do different amounts of work in two different inertial frames?

What do black holes spin relative to?

Why isn't there an atom with an electron at the center and a proton on the outside?

Different coordinate system as opposed to different reference frame

Why is torque measured about the centre of mass?

How does brain perceive time dilation due to gravity?

Is the force of gravity always directed towards the center of mass?

How do you prove that an instantaneous center of rotation exists?