Wolf number en · NOUN
Etymology
The idea of compiling the information about the sunspot number from various observers originated with Rudolf Wolf in 1848 in Zürich, Switzerland.
Meanings
- A measure of the number of sunspots and groups of sunspots present on the surface of the Sun.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| Wolf numbers | Number=Plur | lexicographic |