Proper Time |
interval between 2 events that occur at the same point in space |
Time Dilation |
clocks moving relative to an observer move more slowly than clocks at rest |
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Proper Length |
length or distance between 2 points measured at the same time by an observer at rest with respect to the points |
Length Contraction |
length of an object is measured to be shorter when it is moving relative to the observer than when it is at rest |