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Types Of Superconductors01:28

Types Of Superconductors

A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
Superconductor01:24

Superconductor

A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.

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相关实验视频

Updated: Jul 12, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

高电场,高电流的超导体.

J K Hulm, B T Matthias

    Science (New York, N.Y.)
    |May 23, 1980
    PubMed
    概括

    这项研究探讨了超导材料,这些材料对于制造用于融合反应堆等先进技术的高场电磁铁至关重要. 这些材料使无损操作成为可能,进步了超导电技术.

    科学领域:

    • 材料科学 材料科学 材料科学
    • 凝聚物质物理学 凝聚物质物理学
    • 电气工程 电气工程

    背景情况:

    • 超导材料具有零电阻.
    • 它们可以承载高电流密度 (约. 10^6 A/cm2) 在强磁场 (高达50 T) 中.
    • 这些特性对于开发无损电磁铁至关重要.

    研究的目的:

    • 检查高性能超导材料的材料科学方面.
    • 为提供超导背后的物理原理的概述.
    • 讨论这些材料在电磁应用中的技术适应.

    主要方法:

    • 关于超导的物理原理的回顾.
    • 对超导材料关键参数的分析.
    • 讨论电磁绕的技术要求.

    主要成果:

    • 超导材料对于产生高磁场至关重要.
    • 它们的应用是超导电技术的基础.
    • 该研究涵盖材料,原则和技术适应.

    结论:

    • 超导材料是推动电气技术发展的关键.

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    High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
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    High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

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    Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
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    Published on: August 2, 2019

    High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
    08:42

    High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

    Published on: October 10, 2014

    Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
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    Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

    Published on: July 8, 2021

  • 对于能够产生更高磁场的材料来说,未来的可能性存在.
  • 持续的材料研究对于未来的应用至关重要.