User:David J Weiss/Notebook/notes Photoelect: Difference between revisions
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=Photoelectric Effect Notes= | =Photoelectric Effect Notes= | ||
In this lab we will examine the effects of the photoelectric effect and try to determine Plank's Constant. | In this lab we will examine the effects of the photoelectric effect and try to determine Plank's Constant. | ||
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==Equipment== | ==Equipment== | ||
Revision as of 14:29, 28 September 2009
Photoelectric Effect Notes
In this lab we will examine the effects of the photoelectric effect and try to determine Plank's Constant.
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Equipment
- Mercury Vapor Light Source and Light Block(Model OS-9286)
- Voltage Range: 108-132 VAC
- Power: 125 W MAX
- Frequency: 47-63 HZ
- 115 Volts
- Light Aperture (Model AP-9369)
- Coupling Bar (Model AP-9369)
- Digital Voltmeter (Model 37XR-A)and/or (model FLUKE 111)
- 2 Connection Cables (Model 8-24)
- Stopwatch
- Two 9 Volt Batteries
- Duracell-Procell
- h/e Apparatus (Model AP-9369)
- 3 Filters
- Relative Transmission
- Yellow Line
- Green Line
Set Up
- First turn on the lamp and let it warm up for 20 minutes as per instructions on instrument
- Connect the voltmeter to the h/e apparatus and check the battery (15.91V) and then connect the voltmeter to the h/e appratus
- Position the lamp and the h/e apparatus so that the emitted light shines on the opening of the h/e apparatus
- Focus the beam by adjusting the light aperture on the adjusting rods
Safety
The major safety concerns in this lab are:
- Electrical avoid shocks from the Lamp
- Avoid damaging the equipment
- Avoid turning the lamp on and off due to potential damage to the bulb
- Avoid touching the filters due to fingerprints interfering with the filters
- Toxic Chemicals from the mercury lamp
Notes
Day 1
- Experiment 1:The Photon Theory of Light
- Experiment 2:Determination of h
Day 2
Data
Day1
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