실험: 빛의 속도 측정
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Objective: Determine the velocity of light from the transit time of short light pulses
The fact that light is propagated at a finite speed can be demonstrated by a simple transit time measurement. This is achieved by using very short light pulses of only a few nanoseconds duration and determining the time for them to travel out and back over a distance of several metres, which is measured by an oscilloscope. From the transit time and the distance from the transmitter to a triple-prism reflector one can calculate the velocity of light.