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Derived Units
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Derived units in the SI system of units are formed by powers, products or quotients of the base units. Derived units are also unlimited in number strictly due to the definition of units that are powers of ten of an SI unit. For example, picometers, micrometers, millimeters, kilometers, Megameters are all based on powers of tens of meters.
And as an example of derived unit, one of the SI units of force is the Newton. The Newton is derived from three base units: kilogram, meter, and second. The Newton is defined to be:
`1 "Newton" = 1 ("kilogram" * "meter") / "second"^2`
There are many derived units in the SI system. All derived units are mathematical combinations of base and/or derived units. Here are some derived units, all based on the short list of base units in the SI system of units:
- becquerel
- coulomb
- degrees Celsius
- farad
- gray
- henry
- hertz
- joule
- katal
- lumen
- lux
- newton
- ohm
- pascal
- radian
- siemens
- sievert
- steradian
- tesla
- volt
- weber
- watt
The choice of which units are to be used as Base Units is partially dependent on which units can be most precisely defined and controlled and partially dependent on which units are most frequently used. Since the units of length and time are the most frequently used units in everyday life, it was a natural choice to make the meter and the second two of the base units of the SI system of units.
Chinese yuan renminbi
Chinese yuan renminbi
Chinese yuan renminbi
Chinese yuan renminbi
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