photometricallyadv.

Brit.

/ˌfəʊtə(ʊ)ˈmɛtrᵻkli/, U.S.

/ˌfoʊdoʊˈmɛtrək(ə)li/

Origin: Formed within English, by derivation. Etymons: photometrical adj., -ly suffix².

Etymology: < photometrical adj. + -ly suffix². Compare French photométriquement (dated c1830 in Robert Dict. alphabétique et analogique (1986)).

Chiefly Astronomy.

By means of photometry or a photometer.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > light > intensity of light, luminosity > [adverb]

photometrically1836

fluorometrically1934

1836 J. Herschel Diary 10 Mar. in D. S. Evans Herschel at Cape (1969) 221 Apparatus for measuring photometrically the magnitudes of stars.

1854 D. Brewster More Worlds v. 95 In measuring photometrically the light of these three different structures.

1907 Science 19 Apr. 617/1 These differences can be studied photometrically on spectroheliograph plates made for the purpose.

1945 Amer. Jrnl. Bot. 32 504/2 A procedure for photometrically determining frond area is also described.

1992 Astron. Now July 17/1 The illumination of the inner rim was investigated photometrically.

This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).

单词	photometrically
释义	photometricallyadv. Brit. /ˌfəʊtə(ʊ)ˈmɛtrᵻkli/, U.S. /ˌfoʊdoʊˈmɛtrək(ə)li/ Origin: Formed within English, by derivation. Etymons: photometrical adj., -ly suffix². Etymology: < photometrical adj. + -ly suffix². Compare French photométriquement (dated c1830 in Robert Dict. alphabétique et analogique (1986)). Chiefly Astronomy. By means of photometry or a photometer. ΘΚΠ the world > matter > physics > electromagnetic radiation > light > intensity of light, luminosity > [adverb] photometrically1836 fluorometrically1934 1836 J. Herschel Diary 10 Mar. in D. S. Evans Herschel at Cape (1969) 221 Apparatus for measuring photometrically the magnitudes of stars. 1854 D. Brewster More Worlds v. 95 In measuring photometrically the light of these three different structures. 1907 Science 19 Apr. 617/1 These differences can be studied photometrically on spectroheliograph plates made for the purpose. 1945 Amer. Jrnl. Bot. 32 504/2 A procedure for photometrically determining frond area is also described. 1992 Astron. Now July 17/1 The illumination of the inner rim was investigated photometrically. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < adv.1836
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