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An equal-thickness interference demonstration device and demonstration method

The technology of a demonstration device and demonstration method, which is applied to teaching models, instruments, educational tools, etc., can solve the problems of long experiment preparation time, large observation volume, and prone to errors, etc., and achieves convenient teaching and demonstration, good observation effect, and easy operation Effect

Inactive Publication Date: 2019-09-17
HENAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problems that the above-mentioned existing equal-thickness interferometer not only has a large observation volume, but also takes a long time to prepare for the experiment, and is quite difficult to observe and is very prone to errors, the present invention provides an equal-thickness interference demonstration device and demonstration method

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  • An equal-thickness interference demonstration device and demonstration method
  • An equal-thickness interference demonstration device and demonstration method
  • An equal-thickness interference demonstration device and demonstration method

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Embodiment Construction

[0028] The present invention will be further elaborated below in combination with specific embodiments.

[0029] As shown in the figure: an equal thickness interference demonstration device, the device includes a container 1 with a circular opening at the top, the container 1 is in the shape of an inverted funnel, and the bottom of the side wall of the container 1 is provided with a pressure regulating port 2. When the circular opening of 1 is sealed with a soap film, the pressure in the container 1 can be adjusted by inflating or deflating the pressure regulating port 2, and when the pressure in the container changes, the shape of the soap film can be changed.

[0030] A demonstration method utilizing the equal-thickness interference demonstration device described above comprises the following steps:

[0031] Step 1: Immerse the top of the device in the soap solution, and then take it out. At this time, a layer of soap film will be formed on the edge of the top port of the co...

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Abstract

The invention relates to a device and method for equal thickness interference presentation. The device includes a container with the top end provided with a circular opening. When the circular openingis sealed with a soap film, the pressure in the container can be adjusted, and when the pressure in the container is changed, the shape of the soap film can be changed. The device and method for equal thickness interference presentation can show an interference pattern of a Newton ring, and can also show a wedged interference pattern. In addition, the device can not only display an equal thickness interference pattern with the thin center and the thick periphery, but also can display an equal thickness interference pattern with the thick center and the thin edge.

Description

technical field [0001] The invention relates to the field of physical experiment instruments, in particular to an equal-thickness interference demonstration device and a demonstration method. Background technique [0002] Thin-film interference is divided into two types, one is called equal-tilt interference, and the other is called equal-thickness interference. Equal-thickness interference is the interference fringes formed near the film when parallel light is incident on the film. Where the thickness of the film is the same, interference fringes with the same brightness are formed, so it is called equal thickness interference. [0003] Both Newton's ring and wedge-shaped plate interference belong to equal-thickness interference. It plays a great role in production and life practice, such as measuring the wavelength of light, accurately measuring the length, thickness and angle of tiny objects, detecting the surface finish and flatness of workpieces, and the internal stre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/22
Inventor 琚伟伟王翚李同伟周清晓刘汇慧
Owner HENAN UNIV OF SCI & TECH
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