Noun
English astronomer (son of William Herschel) who extended the catalogue of stars to the southern hemisphere and did pioneering work in photography (1792-1871)
Source: WordNetAs an astronomer in the true sense of the term, Sir John Herschel stood before all his contemporaries. Nay, he stood almost alone. Richard Anthony Proctor
Cannon, Walter F. "The impact of uniformitarianism: two letters from John Herschel to Charles Lyell, 1836–1837." Source: Internet
Credit has traditionally been given to Sir John Herschel both for coining the word and for introducing it to the public. Source: Internet
Fox Talbot, William Henry and Jammes, André (1973) William H. Fox Talbot, inventor of the negative-positive process, Macmillan, p. 95. John Herschel made many contributions to the new field. Source: Internet
The existence of other stars changing in brightness gave credence to the idea that some may change in color too; Sir John Herschel noted this in 1839, possibly influenced by witnessing Eta Carinae two years earlier. Source: Internet
Herschel's discoveries were supplemented by those of Caroline Herschel (11 objects) and his son John Herschel (1754 objects) and published by him as General Catalogue of Nebulae and Clusters in 1864. Source: Internet