Cavity type blackbody radiation demonstration instrument

Abstract

The invention provides a cavity type blackbody radiation demonstration instrument. The cavity type blackbody radiation demonstration instrument comprises an uncovered cavity cube acrylic transparent glass container, a square transparent baffle, a laser pen, a laser power supply, a smoke sprayer, a support capable of fixing laser and some soft mirrors capable of being cut. A soft mirror with the same size is adhered to the inner side wall of the square cavity, the smooth surface faces inwards, and a slit is reserved in the center of one side wall; the square baffle is placed above the cavity; around hole is formed in the rectangular bracket, and a laser pen can be inserted into the bracket and is connected with a laser power supply; the smoke sprayer generates smoke serving as a propagation medium of a laser beam. According to the invention, multiple persons can be allowed to participate in the experiment of demonstrating the cavity type blackbody radiation at the same time, and the interactivity and interestingness are high.

Description

technical field [0001] The invention belongs to the technical field of electromagnetism, and specifically relates to a cavity-type blackbody radiation demonstrator, which is suitable for large-scale university physics experiments and classroom demonstration teaching, and can approximately simulate blackbody radiation. Background technique [0002] Any object has the property of continuously radiating, absorbing, and reflecting electromagnetic waves; the radiated electromagnetic waves are different in each band, that is, they have a certain spectral distribution. This spectral distribution is related to the characteristics of the object itself and its temperature, so it is called thermal radiation. In order to study the law of thermal radiation that does not depend on the specific physical properties of matter, physicists have defined an ideal object——black body (black body), which is used as a standard object for thermal radiation research. Blackbody radiation sources are w...

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing instruments for demonstrating black body radiation are cumbersome, complex devices, high cost, cumbersome steps and need to be heated, etc., and are very unsuitable for training students' hands-on ability and observation ability

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