Planck length

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Planck length

[′pläŋk ‚leŋkth]
(physics)
The length √(Gh /2π c 3) (where G is the gravitational constant, h is Planck's constant, and c is the speed of light) at which quantum fluctuations are believed to dominate the geometry of space-time; it is equal to 1.6162 × 10-35 m.
References in periodicals archive ?
Substituting the known values into the above equation, namely the distance to plank, plank length on reference image and the actual plank length results in: