|
|
|
|
|
Geometrized Unit SystemIn physics, especially in the general theory of relativity, geometrized units or sometimes geometric units, is a physical unit system in which all physical quantities are expressed in the unit of length: meter. In this system, the speed of light c and the gravitational constant G are set to one, c = 1 and G = 1 (and sometimes also Boltzmann constant k = 1). In this system, formulas appear simpler because all constants drop out. A time interval is in geometrical units expressed in meters, the distance travelled by light in that interval. In exactly the same way as we can use light-seconds as a distance in meters, we can express a mass (kilogram) as "mass-meters". The Sun has a mass (in conventional units 2×1030 kg) which is expressed in mass-meters as 1.5 km. The conversion from conventional units (kg) is
mass meters = G/c2 mass kg = 0.742 × 10-27 (m/kg) mass kg Other conversions are given in the table by expressing the number 1.0 in different ways.
| colspan=6 align=center| Converting geometrized units to conventional units | 1.0 | = | c | = | 2.997930 ×108 | m/s | 1.0 | = | G/c2 | = | 0.7425×10-27 | m/kg | .0 | = | G/c4 | = | 0.826×10-44 | m/N | .0 | = | Gk/c4 | = | 1.140×10-67 | m/K | | --------- | See also * Natural units or Planck units, another system of units based on the fundamental physical constants.
|
 |
|
| Copyright 2005-2009 OnPedia.com. All Rights Reserved |
|
|