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Intermolecular interaction force demonstrator

A technology of interaction force and demonstration instrument, applied in the field of teaching aids, can solve problems such as unsatisfactory teaching effect and difficulty for students, and achieve the effect of easy operation and observation, and increased stability.

Inactive Publication Date: 2016-02-24
师海满
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the attraction and repulsion of intermolecular interactions exist at the same time, increase at the same time, and decrease at the same time; Without its intuitive demonstration equipment, it is difficult for students to understand, and the teaching effect is often unsatisfactory

Method used

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  • Intermolecular interaction force demonstrator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Demonstrate the simultaneous existence, increase and decrease of intermolecular attraction and repulsion.

[0021] (1) Stretching or compressing the first small ball 1 and the second small ball 2, the readings of the first load cell 5 and the second load cell 6 are not zero, indicating that the intermolecular attraction and repulsion exist at the same time.

[0022] (2) Compress the first small ball 1 and the second small ball 2, so that the distance between the two small balls decreases, and the readings of the first force gauge 5 and the second force gauge 6 both increase, indicating that the intermolecular attraction and The repulsion increases simultaneously with the decrease of the distance between molecules.

[0023] (3) Stretch the first small ball 1 and the second small ball 2 to increase the distance between the two small balls, and the readings of the first dynamometer 5 and the second dynamometer 6 both decrease, indicating that the intermolecular...

Embodiment 2

[0024] Example 2 Demonstrate when intermolecular attraction and repulsion are equal, when attraction is greater than repulsion, when attraction is less than repulsion and why.

[0025] (1) Place the adjusted invention horizontally in a static state, and the readings of the first dynamometer 5 and the second dynamometer 6 are equal, indicating that the intermolecular attraction is equal to the repulsion when the object is in a balanced state.

[0026] (2) Stretch the first small ball 1 and the second small ball 2 to increase the distance between the two small balls, and the indications of the first dynamometer 5 and the second dynamometer 6 both decrease, but the second measurement The indication of dynamometer 6 decreases fast, and the indication of first dynamometer 5 is greater than the indication of second dynamometer 6 immediately. It shows that when the intermolecular distance is greater than the equilibrium distance, the intermolecular attraction is greater than the re...

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Abstract

The invention relates to an instrument for demonstrating intermolecular interaction force, which comprises a first small ball, a second small ball, a balance shaft, a spring, a first dynamometer, a second dynamometer, a rubber strip and a metal connecting rod . The first small ball and the second small ball are connected together by a spring; the scales of the first dynamometer and the second dynamometer are reversed, one end is fixed on the first small ball, and the other end is respectively passed through a rubber strip and a metal connecting rod Connect the second ball. The present invention can effectively make the intermolecular interaction force exist simultaneously, increase at the same time, decrease at the same time, when it is equal, when the attractive force is greater than the repulsive force, and when the attractive force is smaller than the repulsive force, etc. The physical law of the solution is modeled, dynamic, and visualized.

Description

technical field [0001] The invention relates to a teaching aid, in particular to an instrument for demonstrating the interaction force between molecules. Background technique [0002] At present, in the teaching practice of molecular kinetic theory in middle school physics, students can understand the interaction of attraction and repulsion between molecules through life practice. However, the attraction and repulsion of intermolecular interactions exist at the same time, increase at the same time, and decrease at the same time; Without its intuitive demonstration equipment, it is difficult for students to understand, and the teaching effect is often not ideal. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an intermolecular interaction force demonstrator that is simple to manufacture, low in cost, easy to operate, stable in performance, and can effectively and intuitively demonstrate the laws of the above-ment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/08
Inventor 师海满
Owner 师海满
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