Word Pronunciation & Dictionary

planck length

Word Rarity Rare

Frequency: Zipf frequency 3.01 in modern English

Syllables: planck- length
IPA

24

Scrabble Score

12

Letters

2

Syllables

10

Unique Chars

Meaning

noun

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

Example Sentences

"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 breakthrough that led to quantum mechanics."

Etymology

Named after Max Planck, who defined it.

Inflected Forms

Planck lengths (plural)

Phrases

Planck scale Planck time Planck unit

Frequently Paired Words

Planck scale Planck time Planck unit superstring

Questions

What does planck length mean?: 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
Where does planck length come from?: Named after Max Planck, who defined it.

How to pronounce planck length

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