Stefan-Boltzmann law: measuring the radiant intensity of a "black body" as a function of temperature

VP5.5.2.1
Stefan-Boltzmann law: measuring the radiant intensity of a "black body" as a function of temperature
Stefan-Boltzmann law: measuring the radiant intensity of a "black body" as a function of temperature

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Description

In the two experiments P5.5.2.1 and P5.5.2.2, 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-coolable 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 via the µV box, either to Mobile-CASSY or 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.

Components of equipment sets

1 55581  8  Electric oven for tubes, 230 V LD
1 38943  8  Black body accessory LD
1 502061  8  Safety connecting box, with earth LD
1 55584  8  Support for electric oven LD
1 524005W Mobile-CASSY 2 WiFi LD
1 529676  8  Temperature probe, NiCr-Ni, 1.5 mm, type K LD
1 5240401 µV sensor S LD
1 55736  8  Moll's thermopile LD
1 460310  8  Optical bench, S1 profile, 1 m LD
2 460311  8  Clamp rider with clamp 45/65 LD
2 4603112 Clamp rider with clamp 75/65 LD
1 460380  8  Cantilever arm LD
1 666555  8  Universal clamp 0...80 mm LD
1 50146  8  Connecting leads, 19 A, 100 cm, red/blue, pair LD
1 388181  8  * Immersion pump LD
1 521231  8  * Low-voltage power supply 3/6/9/12 V LD
1 667194  8  * Silicone tubing, 7 mm Ø, 1 m LD
1 604313  8  * Wide-mouthed can, 10 l LD

Articles marked with * are not essential, we do however recommend them to carry out the experiment.

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