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Teaching apparatus for demonstrating electromagnetic phenomenon by using visible light

An electromagnetic phenomenon and line of sight technology, applied in the field of teaching instruments, can solve problems such as inability to form perceptual cognition, general teaching effect, and students who cannot see or touch it.

Inactive Publication Date: 2016-11-23
刘绍家
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of changes in the magnitude and direction of the current, the strength of the magnetic field and the direction of the magnetic field when demonstrating electromagnetic phenomena. A new type of teaching instrument for visual line of sight to demonstrate electromagnetic phenomena due to the lack of general effect

Method used

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  • Teaching apparatus for demonstrating electromagnetic phenomenon by using visible light
  • Teaching apparatus for demonstrating electromagnetic phenomenon by using visible light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 As shown, the linear current experimental instrument 1 includes a supporting transparent substrate 11, a straight rod 12, a transparent plate 13, a visible line of sight 14, a visible needle 15, an automatic converter 16, a switch 17, a circuit board 18, and an automatic magnetic field changer. 19. Power supply 20.

[0025] The supporting transparent substrate 11 is two upper and lower pieces, the straight rod 12 passes through the center of the transparent plate 13, the straight rod 12 stands between the two transparent substrates 11, and the transparent plate 13 is fixed in the middle of the straight rod 12, The straight rod 12 is perpendicular to the surface of the transparent plate 13, the straight rod 12 is provided with a visible line 14, the visible line 14 is connected to the automatic converter 16 through the circuit board 18, and the automatic converter 16 passes through The circuit board 18 is connected to the switch 17. The transparent plate 1...

Embodiment 2

[0030] like figure 2 As shown, the circular current experimental instrument 2 includes a transparent substrate 210, a solenoid 211, a visible line of sight 212, a visible needle 213, an automatic converter 214, a switch 215, a circuit board 216, an automatic magnetic field changer 217, and a power supply 218 , the solenoid 211 is fixed on the transparent substrate 210, half of which is above the transparent substrate 210, and half of which is below the transparent substrate 210. The solenoid 211 is provided with a visible line 212 indicating the direction and magnitude of the current. The visible line 212 is connected to the automatic converter 214 through the circuit board 216, and the automatic converter 214 is connected to the switch 215 through the circuit board 216. The transparent substrate 210 is provided with visual indicators with different densities that can indicate the direction and strength of the magnetic field. Needles 213, on the transparent substrate 210 ther...

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PUM

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Abstract

The invention provides a teaching apparatus for demonstrating an electromagnetic phenomenon by using visible light. The teaching apparatus comprises a straight current experimental apparatus and an annular current experimental apparatus, wherein the straight current experimental apparatus demonstrates a magnetic field around straight current, a relation between the direction of the magnetic field and the current direction and a relation between the strength of the magnetic field and the current size; the annular current experimental apparatus demonstrates a magnetic field around annular current, a relation between the direction of the magnetic field and the current direction and a relation between the strength of the magnetic field and the current size. The teaching apparatus for demonstrating the electromagnetic phenomenon by using the visible light has the benefits that the current direction, the direction of each magnetic field and the strength of each magnetic field can be visibly reflected. When a user can see the change of the current direction with eyes, the direction of the magnetic field is changed; the current direction, the direction of each magnetic field and the strength of each magnetic field can be visibly reflected; when the user can see the change of the current direction with the eyes, the direction of the magnetic field is changed; if the current size is changed, the strength of the magnetic field is changed; the change rule of the direction of the magnetic field and the current direction conforms to the Ampere's rule.

Description

【Technical field】 [0001] The invention relates to a teaching instrument, in particular to a teaching instrument for demonstrating electromagnetic phenomena with visible lines. 【Background technique】 [0002] In the teaching of "Electromagnetic Phenomena" in junior high school and high school physics, when students learn about the magnetic field around the current, the relationship between the direction of the magnetic field and the direction of the current, and the relationship between the strength of the magnetic field and the magnitude of the current, they cannot see the current and the magnetic field. Unable to touch, students find it difficult to use Ampere's law to judge the direction of the magnetic field and the direction of the current, and to understand the changing law of the strength of the magnetic field. [0003] If the "visible line" and "visual needle" are used to represent the changing laws of current and magnetic field, so that students can directly observe ...

Claims

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Application Information

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IPC IPC(8): G09B23/18
Inventor 刘绍家
Owner 刘绍家