실험: 빛의 속도 측정
(115볼트, 50/60헤르츠)
![실험: 빛의 속도 측정
(115볼트, 50/60헤르츠), 8000694 [UE4060100-115], Velocity of light](/imagelibrary/UE4060100-115/UE4060100-115_01_실험-빛의-속도-측정-115볼트-5060헤르츠.jpg)
![실험: 빛의 속도 측정
(115볼트, 50/60헤르츠), 8000694 [UE4060100-115], Velocity of light](/thumblibrary/UE4060100-115/UE4060100-115_01_1200_1200_실험-빛의-속도-측정-115볼트-5060헤르츠.jpg)
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.