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relative sunspot number

rel·a·tive sun·spot num·ber
R r

Transcription

    • US Pronunciation
    • US IPA
    • [rel-uh-tiv suhn-spot nuhm-ber]
    • /ˈrɛl ə tɪv ˈsʌnˌspɒt ˈnʌm bər/
    • US Pronunciation
    • US IPA
    • [rel-uh-tiv suhn-spot nuhm-ber]
    • /ˈrɛl ə tɪv ˈsʌnˌspɒt ˈnʌm bər/

Definition of relative sunspot number words

  • noun relative sunspot number a number indicating the degree of sunspot activity on the sun as a factor of observer idiosyncrasies, the number of sunspot groups, and the number of individual sunspots. 1
Just one definition for relative sunspot number

Information block about the term

Origin of relative sunspot number

First appearance:

before 1975
One of the 1% newest English words
1975-80; after Rudolf Wolf (1816-93), Swiss astronomer

Historical Comparancy

Parts of speech for Relative sunspot number

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
Full grammatical hierarchy of Relative sunspot number

relative sunspot number popularity

This term is known only to a narrow circle of people with rare knowledge. Only 1% 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.

relative sunspot number usage trend in Literature

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