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Related Concept Videos

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...
Charging Conductors By Induction01:15

Charging Conductors By Induction

The Earth is a good conductor of electricity, and it is so big that it can be considered an infinite source or sink of charges. It can easily exchange charges with any matter.
Generally, conductors like metals do not allow any excess charge to be present on them. Any excess charge added to metals easily flows away, for example, when a metal is placed on the Earth. This process is called earthing.
However, conductors can be charged by a process called induction. For example, consider charging a...
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...
Thermal expansion and Thermal stress: Problem Solving01:27

Thermal expansion and Thermal stress: Problem Solving

San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.
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 Due To A Thin Straight Wire01:27

Magnetic Field Due To A Thin Straight Wire

Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.

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Simple, repeatable method for soldering superconducting wire to cryogenic leads.

W D Lee1, J T Broach

  • 1U.S. Army Mobility Equipment Research and Development Command, Fort Belvoir, Virginia 22060.

The Review of Scientific Instruments
|October 1, 1979
PubMed
Summary
This summary is machine-generated.

A novel method creates a reliable solder joint connecting multifilamentary superconductors with braided copper wire conductors. This technique ensures efficient electrical connections for advanced superconducting applications.

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Superconductivity

Background:

  • Superconducting materials require robust electrical connections to braided copper conductors for energy transfer.
  • Traditional methods for joining superconductors and copper can be complex and may compromise performance.

Purpose of the Study:

  • To describe a new method for creating a solder joint between multifilamentary superconductors and braided copper wire conductors.
  • To ensure a high-quality, reliable electrical interface for superconducting applications.

Main Methods:

  • A specific soldering process is detailed for joining the two conductor types.
  • The method focuses on achieving optimal metallurgical bonding and electrical continuity.

Main Results:

  • The described method successfully forms a solder joint between the specified materials.
  • The resulting joint exhibits good electrical conductivity and mechanical integrity.

Conclusions:

  • A practical and effective method for joining multifilamentary superconductors to braided copper conductors has been established.
  • This technique facilitates the integration of superconducting components in various electrical systems.