Objective: Measure the heat radiated by a Leslie cube
The radiation emitted by a body depends on its temperature and the nature of its surface. More specifically, according to Kirchhoff’s law, the ratio between emissivity and absorptivity is identical for all bodies at a given temperature and corresponds to emissivity of a black body ESB at this temperature. In this experiment, we will heat a Leslie cube by filling it with water to a temperature of 100°C and ascertain the radiated intensity in a relative measurement using a Moll thermopile.
![Experiment: Leslie Cube (230 V, 50/60 Hz), 8000583 [UE2020200-230], Heat transport](/imagelibrary/UE2020200-230/UE2020200-230_01_Experiment-Leslie-Cube-230-V-5060-Hz.jpg)
![Experiment: Leslie Cube (230 V, 50/60 Hz), 8000583 [UE2020200-230], Heat transport](/thumblibrary/UE2020200-230/UE2020200-230_01_1200_1200_Experiment-Leslie-Cube-230-V-5060-Hz.jpg)
![Pocket Measuring Tape, 2 m, 1002603 [U10073], Measurement of Length](/thumblibrary/U10073/U10073_01_140_140_Pocket-Measuring-Tape-2-m.jpg)
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![K-Type NiCr-Ni Immersion Sensor, -65°C – 550°C, 1002804 [U11854], Thermometers](/thumblibrary/U11854/U11854_01_140_140_K-Type-NiCr-Ni-Immersion-Sensor-65-C-550-C.jpg)
![Pair of Safety Experiment Leads, 75 cm, 1002849 [U13812], Experiment Leads and Cables](/thumblibrary/U13812/U13812_01_140_140_Pair-of-Safety-Experiment-Leads-75-cm.jpg)
![Thermopile, 1000824 [U8441301], Greenhouse Effect](/thumblibrary/U8441301/U8441301_01_140_140_Thermopile.jpg)
![Leslie's Cube, 1000835 [U8442835], Heat Flow and Radiation of Heat](/thumblibrary/U8442835/U8442835_01_140_140_Leslies-Cube.jpg)
![Rotating Base for Leslie Cube, 1017875 [U8557350], Heat Flow and Radiation of Heat](/thumblibrary/U8557350/U8557350_01_140_140_Rotating-Base-for-Leslie-Cube.jpg)
![Measurement Amplifier U (230 V, 50/60 Hz), 1020742 [U8557560-230], Measuring Amplifier](/thumblibrary/U8557560-230/U8557560-230_01_140_140_Measurement-Amplifier-U-230-V-5060-Hz.jpg)
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