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It is about 1.6 x 10−35 m or about 10−20 times the size of a proton. It is one of the Planck units, defined by Max Planck. It is an important length for quantum gravity because it may be the size of the smallest black holes.
Related pages[change | change source]
References[change | change source]
- Baez, John. "The Planck Length".