Light pressure demonstration instrument

Abstract

The invention provides a novel light pressure demonstration instrument. The light pressure demonstration instrument comprises a laser, at least two rotation blades, at least two bearings and a glass vacuum chamber. Each rotation blade comprises a silver plated face and a blacked face, and the at least two rotation blades are arranged on the bearings coaxially. The silver plated faces and the blacked faces of the adjacent blades are arranged alternately in the clockwise or anti-clockwise direction, and the blades and the laser are arranged in the same horizontal plane. The rotation blades and the bearings are accommodated in the glass vacuum chamber, and the bearings are arranged on supports. The demonstration instrument is simple in apparatus and convenient to operate, an impeller rotates continuously from the white faces to the black faces under the action of light pressure instead of the swinging of suspension elements, and accordingly, the light pressure action and 'power' can be seen clearly and visually.

Description

technical field [0001] The invention relates to an optical demonstration device, in particular to an optical pressure demonstration instrument used in optics. Background technique [0002] In order to prove the existence of light pressure, many physicists have rushed to this scientific research. If the light pressure can be successfully demonstrated, it will broaden the infinitely bright prospects for its application: human beings are studying the tool of space navigation - the solar sail, and its power comes from the light pressure. In 1901, Russian physicist Peter Nikolaevich Lebedev designed an experiment, discovered light pressure for the first time, and published "Experimental Research on Light Pressure", which proved that light pressure the granularity. Following this, American physicists E.F. Nichols and G.F. Hull also measured the pressure of light with precise experiments. Lebedev uses arc light as a light source, and through the focusing of the lens group, the l...

AI Technical Summary

Problems solved by technology

However, the equipment used by Lebedev has the following defects: the equipment is complicated, it is focused by a set of lens groups, and the demonstration is difficult. For many years, the popular science circles and universities have failed to demonstrate it intuitively. The society mistakenly calls the Crookes radiometer Light pressure wind wheel; the light source adopts arc light, which is not easy to obtain and is not good for human eyes; in the end, only the swing of the suspended body can be realized, and the rotation cannot be realized

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