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planck constant

Planck con·stant
P p

Transcription

    • US Pronunciation
    • US IPA
    • [plahngk kon-stuh nt]
    • /plɑŋk ˈkɒn stənt/
    • US Pronunciation
    • US IPA
    • [plahngk kon-stuh nt]
    • /plɑŋk ˈkɒn stənt/

Definitions of planck constant words

  • noun planck constant the fundamental constant of quantum mechanics, expressing the ratio of the energy of one quantum of radiation to the frequency of the radiation and approximately equal to 6.624 × 10− 27 erg-seconds. Symbol: h. 1
  • noun planck constant a fundamental constant equal to the energy of any quantum of radiation divided by its frequency. It has a value of 6.62606876 × 10–34 joule seconds 0

Information block about the term

Origin of planck constant

First appearance:

before 1905
One of the 15% newest English words
First recorded in 1905-10; named after M. K. E. Planck

Historical Comparancy

Parts of speech for Planck constant

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation

planck constant popularity

This term is known only to a narrow circle of people with rare knowledge. Only 2% of English native speakers know the meaning of this word.
According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

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