An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

Homepage Preliminaries Abbreviations Acknowledgments References

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Wolf number

عدد ِ وُلف

adad-e Wolf

Fr.: nombre de Wolf

A number indicating the degree of → sunspot → activity. Same as → sunspot number and → relative sunspot number.

See also: Named after Johann Rudolf Wolf of Zurich who introduced the number in 1852; → number.