Si unit calculator1/7/2024 ![]() ![]() We measure field strength with a magnetometer, expressed in gauss.We use flux density to describe the "field strength" at some distance from a magnet, used in our Pull Force Calculator and in the formulas given in our Surface Fields article.We use flux density to express Surface Field.Technically, we should probably use the term, "magnetic flux density," though it's much more commonly called, "field strength." Here's a confusing part: Many people call this, "field strength." We often refer to field strength in gauss. The conversion between gauss and tesla is an easy one: 1 tesla = 10,000 gauss. By definition, 1 weber per square meter (Wb/m 2) = 1 tesla (T). In fact, webers per square meter is the unit for flux density. Flux Density is a measure how many webers are squeezed into some area. Unlike Magnetic Flux above, the Flux Density defines some size for the loop of wire in that example. ![]() In the equations from our Surface Fields article, we use a "B" to denote this term. This property is also referred to as the B field. Sometimes a " -" is used to distinguish a unit name from an expression with the same words.The SI unit for flux density, or induction, is the tesla (T). If you need a subtraction operator or negative sign involving just unit names, put at least one space around the " -". In general, a " -" connecting names is treated the same as a space. Modifiers square, sq, squared, cubic, cu, cubed, and However, if the expressions are simple and have the same dimensions, a space is treated as an addition (which is common with written expressions). A trig function argument without units is considered to be in radians but you can also use units such as deg with function arguments.Ī space between expressions represents the multiply operator. Sin, cos, tan, arcsin, arccos, arctan, sinh, cosh, tanh, log, ln, and exp represent their respective scientific functions. Standard metric power prefixes are supported. The expression entry is very flexible try typing an expression as you would normallyĪbbreviations are supported (see the name index). This can be as simple as a unit name or as complex as a formula involving additions, subtractions, multiplications, divisions, powers, square roots, and scientific functions (sin, cos, tan, arcsin, arccos, arctan, sinh, cosh, tanh, log, ln, and exp). The "From" EntryĮnter the units or the mathematical expression with units that you want to convert. Although they are dimensionless derived units, this tool also reports radians (plane-angle) and The base units are meter (length), kilogram (mass), second (time), kelvin (temperature), ampere (electric-current), mole (amount-of-substance), and candela (luminous-intensity). This calculator converts the "From" entry to the base units of the International System of Units (SI units) which is commonly called the metric system. (2000 V/m) * 35 cm * 2 elementary-charges
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