Wolf number
Wolf number · Wolf numbers
A measure of the number of sunspots and groups of sunspots present on the surface of…A measure of the number of sunspots and groups of sunspots present on the surface of the Sun.
Meaning
1 sensesA measure of the number of sunspots and groups of sunspots present on the surface of the Sun.
Origin
The idea of compiling the information about the sunspot number from various observers origThe idea of compiling the information about the sunspot number from various observers originated with Rudolf Wolf in 1848 in Zürich, Switzerland.
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Forms
plural: Wolf numbers| Singular | Wolf number |
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| Plural | Wolf numbers |
regular