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Stefan–Boltzmann Law

P5521
In the experiment, a cylindrical electric oven with a burnished brass cylinder is used as a “black body”. The brass cylinder is heated in the oven to the desired temperature between 300 and 750 K. A thermocouple is used to measure the temperature. A water-cooled screen is positioned in front of the oven to ensure that the setup essentially measures only the temperature of the burnished brass cylinder. The measurement is conducted using a Moll’s thermopile; its output voltage provides a relative measure of the radiated power M. The thermopile can be connected either to an amplifier or, via the μV box, to the CASSY computer interface device. In the former case, the measurement must by carried out manually, point by point; the latter configuration enables computer-assisted measuring and evaluation. The aim of the evaluation is to confirm Stefan-Boltzmann’s law.

  • Includes all major components
  • Black body radiation
In the experiment, a cylindrical electric oven with a burnished brass cylinder is used as a “black body”. The brass cylinder is heated in the oven to the desired temperature between 300 and 750 K. A thermocouple is used to measure the temperature. A water-cooled screen is positioned in front of the oven to ensure that the setup essentially measures only the temperature of the burnished brass cylinder. The measurement is conducted using a Moll’s thermopile; its output voltage provides a relative measure of the radiated power M. The thermopile can be connected either to an amplifier or, via the μV box, to the CASSY computer interface device. In the former case, the measurement must by carried out manually, point by point; the latter configuration enables computer-assisted measuring and evaluation. The aim of the evaluation is to confirm Stefan-Boltzmann’s law.



Electric oven

Black body accessory

Safety connection box with ground

Support for electric oven

Digital thermometer with one input

Temperature probe NiCr-Ni, 1.5 mm

Moll's thermopile

Microvoltmeter

Small optical bench

Stand base V-shape, large

Leybold multiclamp (4)

Universal clamp 0...80 mm

Connecting lead 19 A, 100 cm, red/blue, pair

Immersion pump 12 V

Low-voltage power supply

Silicone tubing, 7 mm diam., 1 m

Wide-mouthed can, 10 l



   
 

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470220-106 Stefan–Boltzmann Law
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