In mathematics, there is no smallest number. It is always possible to find a number smaller than any number given. Zero is not the smallest number because any negative number is smaller than zero. The number line extends to infinity in both the...

Low-temperature physics studies the behavior of matter at temperatures approaching absolute zero (-273.15°C) with the use of experimental cryogenic methods. At such extremely cold temperatures, the optical, thermal, electric, and magnetic...

Absolute zero is the lowest temperature theoretically possible. At absolute zero atoms have the minimum amount of vibration (i.e., motion) possible. Although this state cannot be achieved physically, the temperature has been extrapolated from...

The absolute scale, also called the Kelvin scale, was invented in 1848 by William Thomson (Lord Kelvin). It has, as its low point, a mark called absolute zero, the point at which all matter stops moving and below which the temperature cannot be...

Temperature at which a thermodynamic system (&see; thermodynamics) has the lowest energy, 0 kelvin (K). It corresponds to −459.67°F (−273.15°C) and is the lowest possible temperature theoretically achievable by a system. A gas at...

The theoretical lowest possible temperature. It is calculated to be at −273.16°C, equivalent to −459.67°F. See also: ABSOLUTE...

Absolute zero describes a theoretical system that neither emits nor absorbs energy. It is the point at which particles have a minimum energy, determined by quantum mechanical effects, which is called the zero-point energy. By international agreement,...