microphotometern.

Brit.

/ˌmʌɪkrə(ʊ)fə(ʊ)ˈtɒmᵻtə/, U.S.

/ˈˌmaɪkroʊfəˈtɑmədər/

Origin: Formed within English, by compounding. Etymons: micro- comb. form, photometer n.

Etymology: < micro- comb. form + photometer n.

An instrument for making photometric measurements of very small areas.

ΘΚΠ

the world > physical sensation > sight and vision > optical instruments > instruments for measuring > [noun] > light or radiation

phaometer1747

photometer1779

diaphanometer1789

lucimeter1825

refractometer1842

Abbe refractometer1876

dietheroscope1877

reflectometer1879

radiomicrometer1887

holophotometer1888

flicker photometer1896

microphotometer1899

diffractometer1909

spot meter1952

photopolarimeter1971

1899 J. Hartmann in Astrophysical Jrnl. 10 325 The apparatus..may be designated as a microphotometer, since it is a combination of microscope and photometer.

1923 Amer. Jrnl. Sci. 205 459 The films were photometered with a microphotometer at the Bureau of Standards.

1947 Jrnl. Brit. Interplanetary Soc. 6 162 Meteor light-curves, which must be examined photographically, with the help of a recording microphotometer.

1971 Citologija 13 1530 The scanning and integrating microphotometer permits to define the quantity of substance, area and the linear dimension of micro-objects.

1995 Proc. National Acad. Sci. U.S.A. 92 9521 [Ca²⁺]_i and pH_i were determined by ratio fluorescence with a Cairn microphotometer.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	microphotometer
释义	microphotometern. Brit. /ˌmʌɪkrə(ʊ)fə(ʊ)ˈtɒmᵻtə/, U.S. /ˈˌmaɪkroʊfəˈtɑmədər/ Origin: Formed within English, by compounding. Etymons: micro- comb. form, photometer n. Etymology: < micro- comb. form + photometer n. An instrument for making photometric measurements of very small areas. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > instruments for measuring > [noun] > light or radiation phaometer1747 photometer1779 diaphanometer1789 lucimeter1825 refractometer1842 Abbe refractometer1876 dietheroscope1877 reflectometer1879 radiomicrometer1887 holophotometer1888 flicker photometer1896 microphotometer1899 diffractometer1909 spot meter1952 photopolarimeter1971 1899 J. Hartmann in Astrophysical Jrnl. 10 325 The apparatus..may be designated as a microphotometer, since it is a combination of microscope and photometer. 1923 Amer. Jrnl. Sci. 205 459 The films were photometered with a microphotometer at the Bureau of Standards. 1947 Jrnl. Brit. Interplanetary Soc. 6 162 Meteor light-curves, which must be examined photographically, with the help of a recording microphotometer. 1971 Citologija 13 1530 The scanning and integrating microphotometer permits to define the quantity of substance, area and the linear dimension of micro-objects. 1995 Proc. National Acad. Sci. U.S.A. 92 9521 [Ca²⁺]_i and pH_i were determined by ratio fluorescence with a Cairn microphotometer. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1899
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