Dynamic cross-section demonstration device and method of cylinder

Abstract

A dynamic cross-section demonstration device and a method of a cylinder are disclosed. The device is mainly formed by a cylindrical drum, a kerosene layer and a horizontal desktop. The device is characterized in that a side wall of the cylindrical drum and two base plates are transparent organic materials; a space formed by an inner side of the cylindrical drum is ensured to be a cylinder; a halfof space in the cylindrical drum is filled with water and a proper amount of kerosene and then sealing is performed; the kerosene layer is formed through adding red dye in the proper amount of kerosene, and then the kerosene layer is formed on a water surface of a water area, and the cylindrical drum is placed on the horizontal desktop; and the kerosene layer is taken as a cross section, and the cylindrical space formed by the inner side of the cylindrical drum is taken as the cylinder to be sectioned. A cross section, an inclined cross section and a shaft cross section can be demonstrated, amaking process is simple and an effect is obvious. And a lot of education functions can be increased in classroom teaching.

Description

technical field [0001] The invention relates to a dynamic section demonstration device and method for demonstrating a cylinder, and belongs to the field of space geometry teaching demonstration. Background technique [0002] In the teaching of space geometry and calculus, the understanding of cross-sectional diagrams is one of the important contents. Some demonstration teaching aids, such as a geometry cross-section demonstrator, have been improved, but it is still difficult to demonstrate cross-sections with the same colored liquid. Observation, and because the device is too small (the space volume in the device is only about twice that of the syringe) the surface tension of the liquid makes the liquid surface (section) not smooth enough to affect the observation effect. After filling the container with a syringe, the syringe push rod (syringe push rod If it is not fixed with the outer barrel of the syringe), the position relative to the outer barrel of the syringe will cha...

AI Technical Summary

Problems solved by technology

[0002] In the teaching of space geometry and calculus, the understanding of cross-sectional diagrams is one of the important contents. Some demonstration teaching aids, such as a geometry cross-section demonstrator, have been improved, but it is still difficult to demonstrate cross-sections with the same colored liquid. Observation, and because the device is too small (the space volume in the device is only about twice that of the syringe) the surface tension of the liquid makes the liquid surface (section) not smooth enough to affect the observation effect. After filling the container with a syringe, the syringe push rod (syringe push rod If it is not fixed with the outer cylinder of the syringe), the position relative to the outer cylinder of the syringe will change to a certain extent, and at the same time, it is easy to cause the short conduit on the syringe and the container to fall off and affect the demonstration. How to make the cross-section more convenient to demonstrate, this patent will solve this problem

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