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noun

Planck

PLANGK
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Planck (noun) means used to describe units, constants, or formulas named after the physicist Max Planck, especially in quantum theory. Example: “The Planck constant relates a photon's energy to its frequency.”

noun
1
Used to describe units, constants, or formulas named after the physicist Max Planck, especially in quantum theory.
"The Planck constant relates a photon's energy to its frequency."
"Physicists use Planck units to describe scales where classical physics breaks down."

How to use Planck

Learner’s notes

In plain EnglishA term used in physics to refer to things connected with Max Planck's work on quantum theory.

Common pairings
Planck constant Planck length Planck units
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Word forms

Plural
Plancks
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Fill the gap

Can you complete this real example?

The _____ constant relates a photon's energy to its frequency.

Etymology

Named after the German physicist Max Planck (1858-1947), a founder of quantum theory.

Origin: German · First attested 1858

Class of 1858 Planck joined the language around 1858.
See the full Class of 1858 →

Rhymes for Planck

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Frequently asked questions

What does “Planck” mean?
The word “Planck” means used to describe units, constants, or formulas named after the physicist Max Planck, especially in quantum theory. In plain terms, a term used in physics to refer to things connected with Max Planck's work on quantum theory.
How do you pronounce “Planck”?
“Planck” is pronounced PLANGK (/ˈplæŋk/ in IPA).
How do you use “Planck” in a sentence?
Here is “Planck” used in a sentence: “The Planck constant relates a photon's energy to its frequency.”
What part of speech is “Planck”?
“Planck” is a noun.
Where does the word “Planck” come from?
The word “Planck” dates back to around 1858 and comes from German. Named after the German physicist Max Planck (1858-1947), a founder of quantum theory.

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