John Herschel (1792–1871) English mathematician, astronomer, chemist and photographer
Address on the opening of the Eton Library (1833) as quoted in A History of Inventions, Discoveries and Origins (1846) by John Beckmann, Tr. William Johnston, Vol. 1, frontispiece. https://archive.org/details/historyofinventi01unse/page/n5/mode/2up