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Planck lengths

Planck lengths is the plural of Planck length.

Meaning of Planck length

Noun

Planck length (plural Planck lengths)

  1. A unit of length, believed to be the scale at which quantum gravity effects become significant, that is defined in terms of the speed of light, the gravitational constant and the reduced Planck's constant, namely: ℓ_P=√hbar Gc³≈1.616 252(81)×10⁻³⁵ mbox m
    • As Dr. Feynman noted, there are still shorter scales of time and distance to go before we reach the ultimate limits imposed by quantum physics: the Planck length, 10^-33 of a centimeter, and the Planck time, 10^-43 of a second. Both are named for the German physicist Max Planck, who made the...2023 October 9, Dennis Overbye, “The Science Nobel Winners Were Short and Fast”, in The New York Times, archived from the original on 12 Oct 2023

Questions about Planck lengths

What is Planck lengths the plural of?
Planck lengths is the plural of Planck length.

Words near Planck lengths in the dictionary

  1. Planck force
  2. Planck forces
  3. Planck frequencies
  4. Planck frequency
  5. Planck length
  6. Planck lengths
  7. Planck mass
  8. Planck masses
  9. Planck momentum
  10. Planck momentums
  11. Planck particle

Source and license

Adapted from Wiktionary: Planck lengths (page history and authors); Planck length (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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