Planck Constant Apparatus
![Planck Constant Apparatus, 1000537 [U10700-230], Quantization](/imagelibrary/U10700-230/U10700-230_01_Planck-Constant-Apparatus.jpg)
![Planck Constant Apparatus, 1000537 [U10700-230], Quantization](/imagelibrary/U10700-230/U10700-230_02_Planck-Constant-Apparatus.jpg)
![Planck Constant Apparatus, 1000537 [U10700-230], Quantization (Small)](/thumblibrary/U10700-230/U10700-230_01_140_140_Planck-Constant-Apparatus.jpg)
![Planck Constant Apparatus, 1000537 [U10700-230], Quantization (Small)](/thumblibrary/U10700-230/U10700-230_02_1200_1200_Planck-Constant-Apparatus.jpg)
Planck Constant Apparatus
| Experimental Procedure: |
| Objective: Determination of Planck's constant using the stopping potential method. | |
| • | Measurement of the limits of the stopping voltage as a function of the wavelength of the light. |
| • | Presentation of the results in the energy-frequency diagram. |
| • | Determination of Planck's constant and the work function. |
| • | Verification of the independence of the energy of the electrons from the light intensity. |
| Product Information: |
A total of five light-emitting diodes (LEDs) with known peak wavelengths serve as light sources of different frequencies. The intensity of the emitted light from each light source can be varied between 0% and 100%.
| Specifications: |
| Photocell: | type 1P39, cesium (Cs) | |
| Voltmeter: | display: | 3½-digit LCD |
| accuracy: | 0.5 % (typical) | |
|
Nano- ammeter: |
display: | 3½-digit LCD |
| accuracy: | 1 % (typical) | |
| LED: | wavelengths: | 472 nm, 505 nm, 525 nm, 588 nm, 611 nm |
| Dimensions: | 280 mm x 150 mm x 130 mm approx. | |
| Weight: | 1.3 kg approx. | |
| Scope of Delivery: |
| 1 | Base unit with photocell, voltmeter, nanoammeter and voltage source for the light sources |
| 5 | LEDs in housings with connecting cables |
| 1 | Plug-in power supply 12 V AC |
Item No.: 1000537 [U10700-230]
| Weight | 2 kg |
| Brand | 3B Scientific |
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![Experiment:
Determination of Planck Constant, 8000700 [UE5010200-230], Fundamentals of Atomic Physics](/thumblibrary/UE5010200-230/UE5010200-230_01_140_140_Experiment-Determination-of-Planck-Constant.jpg)