Measure with short light pulses.
- Includes all major components
- Time measurement is then independent of the time base of the oscilloscope
In the experiment the path of the light pulses is aired once, and the change in the transit time is measured with the oscilloscope. The velocity of light can then be calculated as quotient of the change in the transit distance and the change in the transit time. Alternatively, the total transit time of the light pulses can be measured in absolute terms using a reference pulse. In this case, the velocity of light can be calculated as quotient of the transit distance and the transit time. A quartz-controlled oscilloscope signal can be displayed on the instrument simultaneously with the measuring pulse in order to calibrate timing. Time measurement is then independent of the time base of the oscilloscope.
Ordering information: Kit Includes: Velocity of light measurement set (VLM); Lens in frame f = +200 mm; Optical bench, standard cross section 0.5 m; Optics rider 90/50 (2); BNC cable, 1 m (3); Metal rule, l = 1 m; Stand base V-shape, large; Stand rod 100 cm, 12 mm Ø; and Leybold multiclamp. Required but not included is an Oscilloscope 30 MHz, two-channel.
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