Speed of Light, Physics 3901, Fall 04
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The oscilloscope shows the signal from a photo-detector when the laser (white, lower right) is modulated by a 1 MHz signal from the signal generator. Pathlengths of 11.5 and 18.1 meters were used. Both gave velocities of about 2.3 x 108 m/s for c. The measured times were 0.05 and 0.08 microseconds for the two cases. |
c-Team Experimenters: Andrew Stallard, Jericho Cain, Leigh Buholtz, Saee Razi.