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Planck’s Constant Apparatus, Planck's Constant Measuring Device
Part No: SS20802
$474.95
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Description
This device demonstrates the quantum mechanical property that energy is a function of frequency, not intensity, and to qualitatively show the photoelectric effect and Planck's constant. This machine is compact, convenient and easy to use.
How It Works
Light shines from a halogen tungsten lamp, passes through a selection of 5 colored filters of different wavelengths and strikes a dark box with a phototube inside. The frequency of light incident on the emitter of the phototube causes photoelectrons to be ejected and pass through a vacuum to a collector. The photocurrent and photo voltage are then measured by a meter.
Specifications
Power Supply: 110V AC / 50Hz
Light Source: 12V/35W halogen tungsten lamp
Features
-Current / voltage meter
-Current multiplier switch
-voltage regulation knob
-Voltage direction switch
-Light intensity knob
-Receiving dark box with vacuum phototube mounted inside
-5 color filters: 460,500,540,570 & 635nm
-Instruction Manual & Lab Manual
TO VIEW THE INSTRUCTION MANUAL FOR THIS PRODUCT, CLICK HERE.
TO VIEW THE LAB MANUAL FOR THIS PRODUCT, CLICK HERE.
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