P6.1.4.3 Determining Planck’s Constant – Selection of Wavelengths Using Interference Filters on the Optical Bench

P6.1.4.3 Determining Planck’s Constant – Selection of Wavelengths Using Interference Filters on the Optical Bench

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P6.1.4.3 Determining Planck’s Constant – Selection of Wavelengths Using Interference Filters on the Optical Bench

In the experiment P6.1.4.3, the capacitor method described previously (see P6.1.4.1) is used to generate the opposing voltage U between the cathode and the anode of the photocell. The voltage at the capacitor is measured without current using the electrometer amplifier.

Note: The opposing voltage U can alternatively be tapped from a DC voltage source. The I-measuring amplifier D is recommended for sensitive measurements of the anode current (see P6.1.4.4).

Components of Experiment:

1 558 77 Photocell for determining Planck’s constant
1 558 791 Holder for photocell
1 460 317 Optical bench, S1 profile, 0.5 m
2 460 3112 Clamp rider with clamp 75/65
3 460 3113 Clamp rider with clamp 105/65
1 468 41 Holder for interference filters
1 468 401 Interference filter, 578 nm
1 468 402 Interference filter, 546 nm
1 468 403 Interference filter, 436 nm
1 468 406 Interference filter, 365 nm
1 460 03 Lens in frame, f=100 mm
1 460 26 Iris diaphragm
1 451 15 High pressure mercury lamp
1 451 195 Power supply unit for high-pressure mercury lamp
1 532 14 Electrometer amplifier
1 562 791 Plug-in power supply, 12 V AC
1 578 22 Capacitor, 100 pF, STE 2/19
1 579 10 Push button (NO), STE 2/19
2 590 011 Clamping plug
1 531 120 Multimeter LDanalog 20
1 501 10 BNC adapter, straight
1 501 09 BNC/4-mm plug adapter, single-pole
1 340 89 Coupling plug 4 mm
1 502 04 Distribution box with earthing socket
1 501 45 Connecting lead 19 A, 50 cm, red/blue, pair
2 500 440 Connecting lead, 19 A, 100 cm, yellow/green
1 468 404 * Interference filter, 405 nm

 

Experiment Instructions Click Here

Additional information

Weight 25 lbs
Dimensions 48 × 24 × 20 in
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