Tesla-A unit of mangetic flux density, used in the MKS system and equivalent to one weber per square meter.
2006-11-14 05:52:28 · 4 answers · asked by D 1 in Science & Mathematics ➔ Engineering
A "Tesla" (abbreviated as "T") is related to the strength of a magnetic field. Typical MRI scanners have a strength of 1.5T or 3.0T
1 Tesla = 10,000 Gauss (G), another unit of magnetic field strength. For a point of reference, the magnetic field of the earth which moves a compass is 0.5 G, so the 1.5T MRI is 30,000x more powerful than the magnetic field of the earth
The "MKS" refers to "Meters-Kilograms-Seconds" to define the units for length, mass, and time. The metric system (SI system) also has other groupings of units, such as "CGS" referring to "Centimeter-Grams-Seconds". Sometimes it is better to work using MKS units rather than CGS units, however, I don't have any good examples...but if you've heard of a "dyne" it's a unit of force in CGS (see links below). Most people are comfortable with the MKS units.
A "Weber" is the SI unit of magnetic flux. It is named after the German physicist Wilhelm Eduard Weber (1804 - 1891).
Defining flux is tricky and can be viewed 2 ways:
1. In the study of transport phenomena (heat transfer, mass transfer and fluid dynamics), flux is defined as the amount of a given quantity that flows through a unit area per unit time, the volumetric flow rate. In this case, flux is viewed as a vector (something with direction and magnitude).
2. In the field of electromagnetism, flux is usually the integral of a vector quantity over a finite surface. The result of this integration is a scalar quantity. The magnetic flux is thus the integral of the magnetic vector field over a surface, and the electric flux is defined similarly. Using this definition, the energy flux of an elecromagnetic field over a specified surface is the rate at which electromagnetic energy flows through that surface.
Finally, the question has MKS system indicated, and sure enough, a Tesla is defined as one Weber per square *meter*.
2006-11-14 06:19:12 · answer #1 · answered by mrcart 2 · 2⤊ 0⤋
A slightly more down-to-earth definition of the weber: It's "the flux that produces in a circuit of one turn an electromotive force of one volt, when the flux is uniformly reduced to zero within one second" (from the ref.).
2006-11-14 14:23:55 · answer #2 · answered by kirchwey 7 · 0⤊ 0⤋
It's the measure of the strength of a magnetic field.
2006-11-14 13:55:11 · answer #3 · answered by Gene 7 · 0⤊ 0⤋
it is in English :)
2006-11-14 13:54:34 · answer #4 · answered by carbonkid22 2 · 0⤊ 1⤋