Abstract
The reflection factor of a surface depends on the angle of incidence and it is therefore not strictly correct to speak of the reflection factor, as such, of a material or surface. Nevertheless this is usually done, the reflection factor being taken to refer to those angles of incidence at which it is constant or nearly so. In Chapter X we have seen that the reflection factor of glass of refractive index 1.5 is practically constant up to angles of incidence from 45° to 50°, and in the case of metals, to almost glancing incidence.
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References
National Bureau of Standards, Washington, Letter Circular LC-547, March 17, 1939. “Preparation and Colorimetric Properties of a Magnesium-Oxide Reflectance Standard”
A. H. Taylor, Sci. Pap. Bur. of Stand. 17, 1922, 1–6, no. 405. “A Simple Portable Instrument for the Absolute Measurement of Reflection and Transmission Factors”
A. H. Taylor, J.O.S.A. 25, 1935, 51–56. “Errors in Reflectometry”
See for instance: G. A. Boutry, 7) Chapter X and R. Sewig: “Handbuch der Lichttechnik”, P. 359 et seq.
J. Bergmans, see 2) Chapter X
J. M. Waldram, Ill. Eng. 27, 1934, 305–313 and 339–351. “Road Surface Reflection Characteristics and their Influence on Street Lighting Practice” Also: G.E.C. Journal 6, 1935, 67–86
V. G. N. Harrison: “Definition and Measurement of Gloss” London 1945
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© 1971 N. V. Philips’ Gloeilampenfabrieken, Eindhoven (The Netherlands)
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Keitz, H.A.E. (1971). Measurement of Reflection, Transmission and Absorption. In: Light Calculations and Measurements. Philips Technical Library. Palgrave, London. https://doi.org/10.1007/978-1-349-00012-8_20
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DOI: https://doi.org/10.1007/978-1-349-00012-8_20
Publisher Name: Palgrave, London
Print ISBN: 978-1-349-00014-2
Online ISBN: 978-1-349-00012-8
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