Keywords: William Huggins' spectroscope.jpg William Huggins' direct comparison spectroscope with enlargement showing comparison prism fixed on the slit Becker Barbara J Eclecticism Opportunism and the Evolution of a New Research Agenda William and Margaret Huggins and the Origins of Astrophysics University Microfilms Ann Arbor MI 1995 https //eee uci edu/clients/bjbecker/huggins/ch2c html _ftnref54 chapter 2 ”part 3 1878 J Norman Lockyer Alternative names 1836-05-17 Rugby Warwickshire 1920-08-16 Salcombe Regis PD-old William Huggins Prism spectroscopes Norman Lockyer |