Photometry

Authored by: William Ross McCluney

Encyclopedia of Optical and Photonic Engineering

Print publication date:  September  2015
Online publication date:  September  2015

Print ISBN: 9781439850978
eBook ISBN: 9781351247184
Adobe ISBN:

10.1081/E-EOE2-120009522

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Abstract

Photometry is a system of language, mathematical formulations, and instrumental methodologies used to describe and measure the propagation of visible (VIS) light through space and materials. Photometry is considered a subset of radiometry, and the study of electromagnetic radiation both within and outside the VIS range, over a large range of wavelengths. This entry begins with a brief introduction to fundamental radiometric quantities and units and then provides a single defining equation for the corresponding photometric quantities.

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