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Teaching instrument for demonstrating superconducting characteristic

An instrument and superconducting technology, applied in the field of experimental instruments capable of demonstrating Lenz's law and superconducting magnetic levitation phenomenon, achieving the effect of simple structure and easy operation

Inactive Publication Date: 2012-10-10
INNOVA SUPERCONDUCTOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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This phenomenon makes maglev trains possible

Method used

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  • Teaching instrument for demonstrating superconducting characteristic
  • Teaching instrument for demonstrating superconducting characteristic
  • Teaching instrument for demonstrating superconducting characteristic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Put the Dewar flat on the desktop, put the superconducting ring in the Dewar 4, the stainless steel ring 1, the aluminum ring 2, and the copper ring 3 respectively on the table, keeping the magnetic bar 7 away from the superconducting ring 5.

[0020] Add an appropriate amount of liquid nitrogen to the Dewar 4. To ensure safety, avoid liquid nitrogen splashing as much as possible. In the process of cooling the superconducting ring and Dewar with liquid nitrogen, violent boiling will occur due to a large amount of heat absorption. When the boiling basically stops, the superconducting ring drops to the same temperature as liquid nitrogen (minus 196°C), that is, it enters the superconducting state. At this point the preparations are ready and the experiment can begin.

[0021] Insert the magnetic bar 7 into the stainless steel ring 1, the aluminum ring 2 and the copper ring 3 at the same speed in turn, the operator can feel that the resistance of the magnetic bar 7 is obv...

Embodiment 2

[0044] Place the magnetic block pad on the desktop, place the magnetic block 6 on the top of the magnetic block pad, and then place the Dewar 4 on the desktop so that the magnetic block 6 pad is in the hole in the middle of the Dewar 4 . Put the superconducting ring 5 into the Dewar 4, and then pour liquid nitrogen into it for cooling. When the liquid nitrogen stops violently boiling, the superconducting ring 5 enters the superconducting state. Hold the Dewar 4 with both hands and leave the table. At this time, the magnetic block 6 is suspended in the center of the Dewar 4 and moves together with the Dewar 4 .

[0045] After putting the Dewar 4 back on the table, lift the zipper tied to the superconducting ring 5 by hand, so that the superconducting ring 5 is separated from the Dewar 4, and at this time the magnetic block 6 is lifted and suspended in the round hole of the superconducting ring 5 central. The magnet 6 is moved by hand, and the magnet block 6 can be suspended a...

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Abstract

The invention relates to a teaching instrument for demonstrating a superconducting characteristic. The teaching instrument comprises a superconducting ring, a magnetic rod, a magnetic block, a Dewar, a stainless steel ring, an aluminum ring, a copper ring and a magnetic block cushion, wherein the superconducting ring is manufactured by a high-temperature superconducting closed coil. The magnitude and direction of impedance of generated induced current and an induced current magnetic field to an original magnetic field when the magnetic flux of a closed loop consisting of three common metal materials and a superconducting wire is changed are compared to understand a Lenz's law, the zero-resistance characteristic of a superconducting material and peculiar characteristics of different metal materials. The teaching instrument also can be used for finishing the demonstration of a magnetic levitation experiment by using the high-temperature superconducting ring and the magnetic block.

Description

technical field [0001] The invention relates to a teaching instrument, in particular to an experimental instrument capable of demonstrating Lenz's law and superconducting magnetic levitation phenomenon. Background technique [0002] The phenomenon of superconductivity refers to the phenomenon that the resistance of a certain material becomes zero when it is lower than a certain temperature (called the superconducting transition temperature Tc). The first superconductor was discovered in 1911. It's called a low-temperature superconductor. Superconductivity can only be shown when cooled to minus 2690C (4K). Practical applications of such superconductors are limited because reaching such low temperatures is prohibitively expensive. In 1986, the discovery of high temperature superconductivity (HTSC) made a key breakthrough in the field of superconductivity. Because the cooling conditions and cost are extremely low, HTSC has practical application value. [0003] Superconduct...

Claims

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Application Information

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IPC IPC(8): G09B23/18
Inventor 童超张强
Owner INNOVA SUPERCONDUCTOR TECH
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