PHYS 102 Chapter Notes - Chapter 26: Inertial Frame Of Reference, Length Contraction, Proper Length
katrinasavvy and 38715 others unlocked
35
PHYS 102 Full Course Notes
Verified Note
35 documents
Document Summary
An inertial reference frame is one in which newton"s law of inertia holds. Inertial reference frames can move at constant velocity relative to one another; accelerating reference frames are noninertial. The special theory of relativity is based on two principles. The relativity principle states that the laws of physics are the same in all inertial reference frames. The principle of the constancy of the speed of light states that the speed of light in empty space has the same value in all inertial reference frames. One consequence of relativity theory is that two events that are simultaneous in one reference frame may not be simultaneous in another. Other effects are time dilation: moving clocks are measured to run slow; and length contraction: the length of a moving object is measured to be shorter (in its direction of motion) than when it is at rest.