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Topic: Weber (unit)


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SI

  
  weber, unit of magnetic flux. The Columbia Encyclopedia, Sixth Edition. 2001-05
Wb, unit of magnetic flux in the mks system of weights and measures; 1 Wb is equal to 1 volt-second.
The weber per square meter, recently named the tesla (abbr.
T), is the unit of magnetic flux density, which is a measure of the strength of a magnetic field in a given region.
www.bartleby.com /65/we/weber.html   (107 words)

  
  Electrical Units - MSN Encarta
Electrical Units, units used to express quantitative measurements of all types of electrostatic and electromagnetic phenomena, of the characteristics of electrical components and circuits, and in the metering of electricity supply.
Historically, the ampere and the ohm were the two independent electrical units, defined in terms of the metre, kilogram, and second, which established SI electrical measurements.
The determination of electrical units in terms of SI units is very costly and laborious, and is only undertaken at intervals of several years by national standards laboratories.
uk.encarta.msn.com /encyclopedia_761556129/Electrical_Units.html   (448 words)

  
 Weber   (Site not responding. Last check: )
Weber defined an electromagnetic unit for electric current which was applied to measurements of current made by the deflection of the magnetic needle of a galvanometer.
Weber improved the tangent galvanometer invented by Hermann von Helmholtz and built an electrodynamometer suitable for studying the force produced by one electric current on another: when the same current passes through two concentric coils placed at right angles to each other, the resulting torque depends on the square of the current.
Weber put forward in 1871 the view that atoms contain positive charges that are surrounded by rotating negative particles and that the application of an electric potential to a conductor causes the negative particles to migrate from one atom to another.
chem.ch.huji.ac.il /~eugeniik/history/weber.html   (2364 words)

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