Planck's constant
noun
variants
or less commonly Planck constant
: a constant that gives the unvarying ratio of the energy of a quantum of radiation to its frequency and that has an exact value of 6.62607015 × 10−34 joule seconds
—symbol h
Dictionary Entries Near Planck's constant
Cite this Entry
“Planck's constant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Planck%27s%20constant. Accessed 26 Nov. 2024.
Copy CitationMedical Definition
Planck's constant
noun
: a constant that gives the unvarying ratio of the energy of a quantum of radiation to its frequency and that has an approximate value of 6.626 × 10−34 joule second
—symbol h
Love words? Need even more definitions?
Merriam-Webster unabridged
Share