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Experiment: Stefan-Boltzmann law (230 V, 50/60 Hz)

Experiment: Stefan-Boltzmann law (230 V, 50/60 Hz)

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Objective: Verify that intensity of radiation is proportional to the fourth power of the temperature, T4


The way that intensity of radiation from a black body depends on temperature is described by the
Stefan-Boltzmann law. Similar dependence on temperature is exhibited by the intensity of radiation
from an incandescent lamp with a tungsten filament. In this experiment, a Moll thermopile is used to
make a relative measurement which verifies the law. The temperature of the filament can be determined
from the way its resistance depends on temperature, which can be determined very accurately
using a four-wire method.
Stefan Boltzmann lamp, 1008523 [U8490050], Optical Lamps on Stem

Stefan Boltzmann lamp

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Unit price
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DC Power Supply 20 V, 5 A (230 V, 50/60 Hz)

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Thermopile, 1000824 [U8441301], Greenhouse Effect

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Digital Multimeter P1035, 1002781 [U11806], Hand-held Digital Measuring Instruments

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Barrel Foot, 1 kg, 1002834 [U13265], Bases

Barrel Foot, 1 kg

1002834 [U13265]
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Set of 15 Safety Experiment Leads, 75 cm, 1002843 [U138021], Circuits

Set of 15 Safety Experiment Leads, 75 cm

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Unit price
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Product Data
Item No. 8000693 [UE4050200-230]
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