Definition
| Submultiples | Multiples | |||||
|---|---|---|---|---|---|---|
| Value | Symbol | Name | Value | Symbol | Name | |
| 10−1 Wb | dWb | deciweber | 101 Wb | daWb | decaweber | |
| 10−2 Wb | cWb | centiweber | 102 Wb | hWb | hectoweber | |
| 10−3 Wb | mWb | milliweber | 103 Wb | kWb | kiloweber | |
| 10−6 Wb | µWb | microweber | 106 Wb | MWb | megaweber | |
| 10−9 Wb | nWb | nanoweber | 109 Wb | GWb | gigaweber | |
| 10−12 Wb | pWb | picoweber | 1012 Wb | TWb | teraweber | |
| 10−15 Wb | fWb | femtoweber | 1015 Wb | PWb | petaweber | |
| 10−18 Wb | aWb | attoweber | 1018 Wb | EWb | exaweber | |
| 10−21 Wb | zWb | zeptoweber | 1021 Wb | ZWb | zettaweber | |
| 10−24 Wb | yWb | yoctoweber | 1024 Wb | YWb | yottaweber | |
| Common multiples are in bold face. | ||||||
The weber may be defined in terms of Faraday's law, which relates a changing magnetic flux through a loop to the electric field around the loop. A change in flux of one weber per second will induce an electromotive force of one volt (produce an electric potential difference of one volt across two open-circuited terminals).
Officially,
Weber (unit of magnetic flux) — The weber is the magnetic flux which, linking a circuit of one turn, would produce in it an electromotive force of 1 volt if it were reduced to zero at a uniform rate in 1 second.
In SI base units, the dimensions of the weber are (kg·m2)/(s2·A). The weber is commonly expressed in terms of other derived units as the Tesla-square meter (T·m2), volt-seconds (V·s), or joules per ampere (J/A).
- 1 Wb = 1 V·s = 1 T·m2 = 1 J/A = 108 Mx (maxwells).
This SI unit is named after Wilhelm Eduard Weber. As with every International System of Units (SI) unit whose name is derived from the proper name of a person, the first letter of its symbol is upper case (Wb). However, when an SI unit is spelled out in English, it should always begin with a lower case letter (weber), except in a situation where any word in that position would be capitalized, such as at the beginning of a sentence or in capitalized material such as a title. Note that "degree Celsius" conforms to this rule because the "d" is lowercase. —Based on The International System of Units, section 5.2.
Read more about this topic: Weber (unit)
Famous quotes containing the word definition:
“The definition of good prose is proper words in their proper places; of good verse, the most proper words in their proper places. The propriety is in either case relative. The words in prose ought to express the intended meaning, and no more; if they attract attention to themselves, it is, in general, a fault.”
—Samuel Taylor Coleridge (1772–1834)
“The man who knows governments most completely is he who troubles himself least about a definition which shall give their essence. Enjoying an intimate acquaintance with all their particularities in turn, he would naturally regard an abstract conception in which these were unified as a thing more misleading than enlightening.”
—William James (1842–1910)
“It is very hard to give a just definition of love. The most we can say of it is this: that in the soul, it is a desire to rule; in the spirit, it is a sympathy; and in the body, it is but a hidden and subtle desire to possess—after many mysteries—what one loves.”
—François, Duc De La Rochefoucauld (1613–1680)