The term originates in a 1928 article by astrophysicist Edward Arthur Milne, where it was used to describe the effects that the astronomical metals in a star's outer regions had on that star's spectrum.
Edward Arthur Milne (1896–1950), British mathematician and astrophysicist
Arthur Conan Doyle | King Arthur | Arthur Miller | Arthur C. Clarke | Arthur | King Edward VII | Edward I of England | Edward III of England | Arthur Ransome | Edward VIII | Edward VII | Prince Edward Island | Prince Edward, Earl of Wessex | Edward III | Edward | Edward Heath | Edward G. Robinson | Edward Albee | Edward Elgar | Port Arthur | Edward I | Chester A. Arthur | Arthur Balfour | Edward IV of England | Arthur Sullivan | Edward VI of England | Arthur Rubinstein | King Edward's School, Birmingham | Edward Hopper | Edward Gibbon |
Cherry spent the next decade in Britain, first at Trinity College where he was elected a Fellow (1924), then substituting for Professor Edward Arthur Milne at Manchester (1924-1925), and Professor Sir Charles Galton Darwin at Edinburgh (1927).
Vectorial Mechanics (1948) is a book on vector manipulation (i.e., vector methods) by Edward Arthur Milne, a highly decorated (e.g., James Scott Prize Lectureship) British astrophysicist and mathematician.