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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![莫尔型 热电堆, 1000824 [U8441301], 温室效应](/thumblibrary/U8441301/U8441301_01_140_140_莫尔型-热电堆.jpg)
![Stefan Boltzmann lamp, 1008523 [U8490050], 位于支架上的光学灯](/thumblibrary/U8490050/U8490050_01_140_140_Stefan-Boltzmann-lamp.jpg)
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(230 V, 50/60 Hz), 1003312 [U33020-230], 供电器](/thumblibrary/U33020-230/U33020-230_01_140_140_直流电源0-20-V-0-5-A-230-V-5060-Hz.jpg)
![数字万用表 P1035, 1002781 [U11806], 手持数字测量仪器](/thumblibrary/U11806/U11806_01_140_140_数字万用表-P1035.jpg)
![高频接插线，长1m, 1002746 [U11255], 实验用导线和电缆](/thumblibrary/U11255/U11255_01_140_140_高频接插线-长1m.jpg)
![高频接插线,BNC/4毫米插头, 1002748 [U11257], 实验用导线和电缆](/thumblibrary/U11257/U11257_01_140_140_高频接插线-BNC4毫米插头.jpg)
![Teltron 管座 S, 1014525 [U185002], 电子管 S](/thumblibrary/U185002/U185002_01_140_140_Teltron-管座-S.jpg)
![高压电源5kV（230 V，50/60 Hz）, 1003310 [U33010-230], 供电器](/thumblibrary/U33010-230/U33010-230_01_140_140_高压电源5kV-230-V-5060-Hz.jpg)
![Digital Multimeter P3340, 1002785 [U118091], 手持数字测量仪器](/thumblibrary/U118091/U118091_01_140_140_Digital-Multimeter-P3340.jpg)
![汤姆生试管, 1000617 [U18555], 电子管S](/thumblibrary/U18555/U18555_01_140_140_汤姆生试管.jpg)
![Diode D, 1000646 [U191501], 电子管D](/thumblibrary/U191501/U191501_01_140_140_Diode-D.jpg)
![演示用的电子束偏转管, 1000651 [U19155], 电子管D](/thumblibrary/U19155/U19155_01_140_140_演示用的电子束偏转管.jpg)
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