PURPOSE: To illustrate radiation from various surfaces.
DESCRIPTION: When the cube is heated with hot water, each of the six sides of the cube radiates at the same temperature. The amount of radiation emanating from each side is only a function of its surface.
REFERENCES: (PIRA 4B40.30) See Demonstration Reference File for details regarding this apparatus.
EQUIPMENT: Leslie's cube, thermopile radiometer, boiling water source.
SETUP TIME: 10 min.
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