photometricaladj.
/ˌfəʊtə(ʊ)ˈmɛtrᵻkl/, U.S. /ˌfoʊdoʊˈmɛtrək(ə)l/ Science.
= photometric adj. 1.
ΘΚΠ
the world > matter > physics > electromagnetic radiation > light > intensity of light, luminosity > [adjective]
photometrical1795
photometric1820
photoscopic1872
1795 Philos. Trans. (Royal Soc.) 85 172 The falling off..of the light toward the line bounding the illumination, is perceived according to the photometrical laws.
1833 J. F. W. Herschel Astronomy xii. 375 A numerical estimate, grounded on precise photometrical experiments, of the apparent brightness of each star.
1864 Daily Tel. 16 Sept. The photometrical standard [of gas-light] is more than twice as high in many other places than it is in London.
1903 Proc. Royal Soc. 72 445 Two photometrical curves for solutions of normal and modified chlorophyll of equal concentration.
1951 Science 14 Sept. 279/1 The technique of microspectrophotometry..can be improved from the photometrical point of view.
2001 Brit. Jrnl. Hist. Sci. 34 68 The principle of polarization for his photometrical work had been criticized by his teachers.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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adj.1795