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Anonymous users2024-02-07Distinctive features of superconducting materials:
1. It can transmit electric energy without loss.
2. The magnetic field is always zero.
The main applications of superconducting materials are:
1. The superconductivity of the material can be used to make magnets, power cables, communication cables and antennas, and its performance is better than that of conventional materials.
2. The complete diamagnetism of the material can be used to make frictionless gyroscopes.
and bearings. 3. The Josephson effect can be used to make a series of precision measuring instruments, radiation detectors, microwave generators, logic components, etc.
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Anonymous users2024-02-061. Superconducting properties of superconducting materials.
When the temperature of the conductor drops to a certain value, the resistance will suddenly disappear, that is, zero resistance, this phenomenon is called "superconductivity", the material with superconductivity, called superconductor, superconductors such as titanium, zinc, thallium, lead, mercury, etc., in the superconducting state, when the temperature drops to the temperature (superconducting transition temperature), all show some common characteristics. The resistance is zero. A superconductor ring removes the power supply and retains the original current.
Someone has done it.
It was found that the current in the superconducting ring lasted for two and a half years without significant attenuation.
Fully diamagnetic. This phenomenon was discovered in 1933 by German physicist Meissner and others, as long as the temperature of the superconducting material is lower than the critical temperature and enters the superconducting state, the superconducting material will expelle the magnetic field lines from the body, so the magnetic induction intensity in its body is always zero. This phenomenon is called the "Meissner effect".
2. Application of superconducting materials There is great potential for superconducting applications.
Superconducting states are a unique state of matter, and its novelty immediately makes people think of applying them to technology. The zero resistance effect of superconductors shows that they have the property of non-lossy transport currents. If high-power generators and motors used in industry, defense, and scientific research can be superconducted, energy consumption will be greatly reduced and miniaturized.
Using the superconducting tunneling effect, it is possible to create the world's most sensitive electromagnetic signal detection elements and computer components for high-speed operation. Superconducting quantum interference magnetometers made with such detectors can measure changes in the Earth's magnetic field in billionths of a billion, as well as magnetoencephalography and magnetocardiogram of a person. The use of superconductors in microwave devices can greatly improve the quality of satellite communications.
As a result, superconductors show great potential for applications.
The application of superconducting materials in strong electricity.
The main applications of superconducting materials (superconducting coils) in terms of strong electricity include: strong field magnets for controlled thermonuclear reactions in high-energy physics and condensed matter physics studies; It is used on the NMR device to provide a uniform magnetic field of 1 10 t and NMR hierarchical scanning; used in the manufacture of generator and motor coils; maglev coils for high-speed trains; Ferrofluid and electromagnetic propulsion systems for ships and submarines. The application of superconducting materials in weak electricity.
The application of superconducting materials in weak electricity is mainly to use the Josephson junction to obtain a standard voltage, which can be used to fabricate superconducting quantum interferometers, which can be used in biomagnetism. In addition, the Josephson junction has great potential for computer applications, where we can make faster computer logic circuits and memories. Of course, there are many devices with special properties.
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Anonymous users2024-02-051. Zero resistance.
Superconducting materials have zero resistance in the superconducting state and are able to transmit electrical energy without loss. If a magnetic field is used to induce an induced current in a superconducting ring, this current can be maintained without attenuation. This "continuous current" has been observed several times in experiments.
2. Diamagnetism.
When the superconducting material is in the superconducting state, as long as the applied magnetic field does not exceed a certain value, the magnetic field lines cannot penetrate, and the magnetic field in the superconducting material is always zero.
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