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Equal to 1 ⁄ 1000 of an inch, a thousandth is commonly called a thou / ˈ θ aʊ / (used for both singular and plural) or, particularly in North America, a mil (plural mils). The words are shortened forms of the English and Latin words for "thousand" ( mille in Latin).
A common adjustment value in firearm sights is 1 cm at 100 meters which equals 10 mm / 100 m = 1 / 10 mrad. The true definition of a milliradian is based on a unit circle with a radius of one and an arc divided into 1,000 mrad per radian, hence 2,000 π or approximately 6,283.185 milliradians in one turn , and rifle scope ...
Teslin grades are referred to as a letter and number designation (e.g. "SP 1000"). The letters are the type of Teslin, and the numbers represent the thickness where 1000 is 10 mil, 600 is 6 mil, 700 is 7 mil, etc.
The micrometre (SI symbol: μm) is a unit of length in the metric system equal to 10 −6 metres ( 1 / 1 000 000 m = 0. 000 001 m). To help compare different orders of magnitude, this section lists some items with lengths between 10 −6 and 10 −5 m (between 1 and 10 micrometers, or μm). ~0.7–300 μm – wavelength of infrared radiation
A foe is a unit of energy equal to 10 44 joules (≈9.478 × 10 40 BTU) that was invented by physicist Gerry Brown of Stony Brook University. To measure the staggeringly immense amount of energy produced by a supernova, specialists occasionally use the "foe", an acronym derived from the phrase [ten to the power of] fifty-one ergs, or 10 51 ergs ...
Thickness of aluminum foil is measured in mils (1 ⁄ 1000 inch, or 0.0254 mm) in the United States. Cross-sectional area of electrical wire is measured in circular mils in the U.S. and Canada, one circular mil (cmil) being equal to 5.067 × 10 −4 mm 2 (or 7.854 × 10 −7 in 2). Since this is so small, actual wire is commonly measured in ...
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In United States customary units, dielectric strength is often specified in volts per mil (a mil is 1/1000 inch). [19] The conversion is: 1 V/mil = 3.94 × 10 4 V/m 1 V/m = 2.54 × 10 − 5 V/mil {\displaystyle {\begin{aligned}1{\text{ V/mil}}&=3.94\times 10^{4}{\text{ V/m}}\\1{\text{ V/m}}&=2.54\times 10^{-5}{\text{ V/mil}}\end{aligned}}}