Text: a unit of distance representing the scale at which gravity, and perhaps space itself, becomes quantized (discrete) rather than continuous. This is the shortest distance that is meaningful in our understanding of the laws of physics. The Planck length is defined to be the square root of Gh/c^3, where G is the universal gravitational constant, h is Planck's constant, and c is the speed of light. This makes the Planck length about 4.051 x 10-35 meter.

See Also:

Source: