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The small-angle approximations can be used to approximate the values of the main trigonometric functions, provided that the angle in question is small and is measured in radians : These approximations have a wide range of uses in branches of physics and engineering, including mechanics, electromagnetism, optics, cartography, astronomy, and ...
Reference dose. A reference dose is the United States Environmental Protection Agency 's maximum acceptable oral dose of a toxic substance, "below which no adverse noncancer health effects should result from a lifetime of exposure". Reference doses have been most commonly determined for pesticides. The EPA defines an oral reference dose ...
The coefficient of rolling resistance b, which has the dimension of length, is approximately (due to the small-angle approximation of =) equal to the value of the rolling resistance force times the radius of the wheel divided by the wheel load. [3] ISO 18164:2005 is used to test rolling resistance in Europe.
Engineering tolerance is the permissible limit or limits of variation in: a physical dimension; a measured value or physical property of a material, manufactured object, system, or service; other measured values (such as temperature, humidity, etc.); in engineering and safety, a physical distance or space (tolerance), as in a truck (lorry ...
Helium-3 (3 He [1] [2] see also helion) is a light, stable isotope of helium with two protons and one neutron. (In contrast, the most common isotope, helium-4, has two protons and two neutrons.) Other than protium (ordinary hydrogen), helium-3 is the only stable isotope of any element with more protons than neutrons. It was discovered in 1939.
The list includes the following Christian denominations: the Catholic Church (including the Eastern Catholic Churches), Protestant denominations with at least 0.2 million members (including Anglican churches, which are sometimes described as a via media between Catholicism and Protestantism), the Eastern Orthodox Church (and its offshoots), the Oriental Orthodox Churches (and their offshoots ...
Microsecond. A microsecond is a unit of time in the International System of Units (SI) equal to one millionth (0.000001 or 10 −6 or 1,000,000) of a second. Its symbol is μs, sometimes simplified to us when Unicode is not available. A microsecond is equal to 1000 nanoseconds or 1,000 of a millisecond. Because the next SI prefix is 1000 times ...
Yeast. Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized. [ 1][ 2][ 3] They are estimated to constitute 1% of all described fungal species.