Physics307L F07:People/Gooden/Notebook/071203
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Speed of light w/ Matt, Zane and Koch
- Triggering on channel 2 (TAC), 100 mV rising.
- PMT maximized about 50 cm away from LED, value = 3.30 +/-0.02
- TAC is on 50 ns scale
- averaging 128
- 500 mV / division channel 1
- 200 mV / division channel 2
stick reading (cm) TAC (V) PMT notes (if any) 9 1.47 +/- 0.01 14 1.43 +/- 0.01 19 1.40 +/- 0.01 24 1.36 +/- 0.01 29 1.33 +/- 0.01 36 1.28 +/- 0.01 39 1.26 +/- 0.01 44 1.22 +/- 0.01 49 1.18 +/- 0.01 54 1.14 +/- 0.01 59 1.10 +/- 0.01
59 cm meter stick 3.30 V PMT 1.09 V TAC
9 cm meter stick 3.18 V PMT 1.47 V TAC
59 cm meter stick 3.18 V PMT 1.1 V TAC