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what is the formula for planck length. For example a distance smaller than the Planck length just doesnt make sensethe physics breaks down. H is the reduced Planck constant also known as the Dirac constant G is the universal gravitational constant.
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The Planck scale was invented as a set of universal units so it was a shock when those limits also turned out to be the limits where the known laws of physics applied. The units of G are distance distance distance mass time time The units of c are distance time The units of h are distance distance mass time Planck observed that there is only one way to combine these constants to obtain a distance. The speed of light in a vacuum 29979 10⁸ ms.
The emergence of a minimal length is usually considered a dynamical phenomenon related to the fact that at the Planck scale there are violent fluctuations of the metric and even topology changes as in Wheeler space-time foam from Quantum groups gravity and the generalized uncertainty principle by Michele Maggiore.
Thats 0000000000000000000000000000000000016 meters To give you an idea lets compare it with the size of an atom which is already about 100000 times smaller than anything you can see with your unaided eye an atom size is about 00000000001 meters. Plancks constant 66261 10ˉ³⁴ kgs. Here is an excellent explanation of it in just 90 secondsWhat is the smallest distance you can think of. Distance square root hGccc The resulting distance is called the Planck length.
