An experimental device for synchronously establishing different linear gradient temperature fields in a water tank

Abstract

The invention relates to an experimental device for simultaneously establishing different linear gradient temperature fields in a water tank. A base is provided with a transparent water tank and a multi-channel temperature tester; the inner left side wall of the transparent water tank is provided with a semi-conductor refrigerating sheet support provided with a semiconductor refrigerating sheet; the semi-conductor refrigerating sheet support and the semiconductor refrigerating sheet are immersed in water in the transparent water tank; and a front side wall and a rear side wall between the semiconductor refrigerating sheet and the inner right side wall of the transparent water tank are sequentially provided with a first partition plate, a second partition plate and a third partition plate which are separated from the inner bottom of the transparent water tank by a certain distance. With the experimental device of the invention adopted, the technical problem of establishing large-scale linear gradient temperature fields in a transparent water tank can be solved; gradient temperature fields of different linear gradients can be simultaneously obtained in the same transparent water tank; and the transmission differences of light in different linear gradient temperature fields can be easily compared, so that conditions can be provided for quantitatively studying the transmission characteristics of light in gradient index media.

Description

technical field [0001] The invention belongs to the technical field of physical experiment teaching instruments, and in particular relates to optical experiment instruments. Background technique [0002] The bending transmission characteristics of light in inhomogeneous media not only reveal the physical essence of natural phenomena such as "mirages", but are also used in the research of long optical path transmission fields such as atmospheric optics, laser communication, optical fiber communication, and laser remote sensing, as well as gradient index optical elements. It has been widely used in the design and manufacture of devices and other modern technologies. However, people always have a certain degree of mystery about the phenomenon of bending transmission of light in inhomogeneous media. On the one hand, this is due to the concept of straight-line propagation of light formed by people since childhood, and on the other hand, it is difficult to observe the bending tra...

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Problems solved by technology

However, the gradient temperature field established by this structure in the water has a very small linear gradient range in the vertical direction, and the linear gradient temperature range is generally only 3-4cm. During the horizontal transmission process in the water tank, the light will soon enter the nonlinear gradient temperature region. (Nonlinear gradient refractive index region), making it very difficult to quantitatively study the transmission characteristics of light in the gradient refractive index medium in the tank

At the same time, only one gradient temperature field can be established in the same water tank at a time, which cannot satisfy the simultaneous observation, comparison, and measurement of the transmission of different curvatures of light in different gradient temperature fields in the same water tank

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