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.
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Mains voltage: |
230 V (±10 %), 50/60 Hz |
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(230 V, 50/60 Hz), 1003312 [U33020-230], 전원](/thumblibrary/U33020-230/U33020-230_01_140_140_DC-Power-Supply-20-V-5-A-230-V-5060-Hz.jpg)
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![Tube Holder S -
for the experimental setup of tubes of series S, 1014525 [U185002], 액세서리 – S형](/thumblibrary/U185002/U185002_01_140_140_Tube-Holder-S-for-the-experimental-setup-of-tubes-of-series-S.jpg)
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![Digital Spectrometer LD, 1018103 [U22028], 분광기](/thumblibrary/U22028/U22028_01_140_140_Digital-Spectrometer-LD.jpg)
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