附註:Includes bibliographical references and index.
Introduction: Making Light Count -- Light As a Law-Abiding Quantity -- Beginnings -- A lawless frontier -- Photography: juggling variables -- Astronomy: isolated forays -- Techniques of visual photometry -- Qualitative methods -- Comparative methods -- Physical methods -- Studies of radiant heat -- Describing colour -- Seeing Things -- Recurring themes -- Altered perceptions -- Astrophysics and the scientific measurement of light -- Spectroscopy -- Shifting standards: gas and electrotechnical photometry -- Utilitarian connections -- The 19th-century photometer -- Prejudice and temptation: the problems in judging intensity -- Quantifying light: n-rays versus blackbody radiation -- Careers in the Shadows -- Amateurs and independent research -- The illuminating engineers -- Optical societies -- Laboratories and Legislation -- Utilitarian pressures -- The Physikalisch-Technische Reichsanstalt -- The National Physical Laboratory -- The National Bureau of Standards -- Colour at the national laboratories -- Tracing careers -- Weighing up the national laboratories -- Industrial laboratories -- Wartime photometry -- Consolidation of practitioners -- Technology in Transition -- A fashion for physical photometry -- Objectivity -- Precision -- Speed -- Automation -- The refinement of vision -- Shifts of confidence -- Physical photometry for astronomers -- An awkward hybrid: photographic recording and visual analysis -- A halfway house: photographic recording and photoelectric analysis.
