ASTRO 142 Chapter Notes - Chapter 7: Lorentz Transformation, Galilean Transformation, Galilean Invariance
Document Summary
In galilean relativity there is no absolute frame of rest, and all inertial frames are equivalent. Contradictory, the laws of electromagnetism are not invariant under the galilean transformation. Attempt to find the answer: george f. fitzgerald: objects moving through the ether at velocity v were physically contracted. The speed of light in the vacuum is the same in all inertial frames of reference . Lightwaves are not transmitted by a medium. All ideas framed around the train, lightbulb, passenger and robber thought experiment. Second postulate of relativity: light moves at the same speed no matter the time frame. Passenger observes the light bulb"s light hitting the front and back of the train car at the same time, but the robber sees the light hitting the back first. Simultaneity: not preserved for the two observations. This delay is not due to light, but time itself.
