Spectroscopic coincidences admit of no compromise. Either they are absolute, or they are worthless.
A Popular History of Astronomy During the Nineteenth Century (3rd, edition), Part II, Chapter XII (p. 455)
Spectroscopic coincidences admit of no compromise. Either they are absolute, or they are worthless.
A Popular History of Astronomy During the Nineteenth Century (3rd, edition), Part II, Chapter XII (p. 455)