noun
Planck
PLANGK
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 notesIn 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
Word Forms
Plancks plural
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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.