ratiometern.

Brit.

/ˌreɪʃɪˈɒmᵻtə/, U.S.

/ˌreɪʃiˈɑmədər/

Forms:

α. 1900s– ratiometer.

β. 1900s– ratio meter.

Origin: Formed within English, by compounding. Etymons: ratio n., -meter comb. form²; ratio n., meter n.³

Etymology: Partly < ratio n. + -meter comb. form², and partly (in β. forms and perhaps also sometimes in α. forms) < ratio n. + meter n.³

1. A mechanical device that provides a set of numbers having the same ratio to one another as any other given set. rare. Now disused.

ΚΠ

1903 Nature 5 Mar. 424/1 The instrument is known as the ‘ratiometer’, and was designed by Mr. A. E. Munby. It..consists of two graduated rules, which can be set at any angle, which with one edge of a T-square form a right-angled triangle. By means of a tongue and groove the base of the triangle slides along the stock of the T-square.

2. Any of various instruments for measuring the ratio or quotient of two physical quantities.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > [noun] > measurement of > instrument for

electrometer1749

electronometer1837

electronome1872

binant electrometer1908

ratiometer1925

1925 R. O. Kapp G. Kapp's Transformers (ed. 3) ix. 220 The ratio of a transformer is tested by an apparatus known as a ratiometer.

1939 B. Dudley in K. Henney & B. Dudley Handbk. Photogr. vii. 184 Suitable instruments include monochromatic sensitometers, spectrographs, tricolor tablets, ratiometers, color charts, and filter assemblies.

1992 Jrnl. Trop. Ecol. 8 274 The remote sensing system used a spectral ratio meter to compare reflectance of red and near infra red.

2000 Jrnl. Photochem. & Photobiol. A 131 2/2 The intensity ratio of both beams was monitored with an energy Ratiometer equipped with two pyroelectric detectors.

This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022).

单词	ratiometer
释义	ratiometern. Brit. /ˌreɪʃɪˈɒmᵻtə/, U.S. /ˌreɪʃiˈɑmədər/ Forms: α. 1900s– ratiometer. β. 1900s– ratio meter. Origin: Formed within English, by compounding. Etymons: ratio n., -meter comb. form²; ratio n., meter n.³ Etymology: Partly < ratio n. + -meter comb. form², and partly (in β. forms and perhaps also sometimes in α. forms) < ratio n. + meter n.³ 1. A mechanical device that provides a set of numbers having the same ratio to one another as any other given set. rare. Now disused. ΚΠ 1903 Nature 5 Mar. 424/1 The instrument is known as the ‘ratiometer’, and was designed by Mr. A. E. Munby. It..consists of two graduated rules, which can be set at any angle, which with one edge of a T-square form a right-angled triangle. By means of a tongue and groove the base of the triangle slides along the stock of the T-square. 2. Any of various instruments for measuring the ratio or quotient of two physical quantities. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > [noun] > measurement of > instrument for electrometer1749 electronometer1837 electronome1872 binant electrometer1908 ratiometer1925 1925 R. O. Kapp G. Kapp's Transformers (ed. 3) ix. 220 The ratio of a transformer is tested by an apparatus known as a ratiometer. 1939 B. Dudley in K. Henney & B. Dudley Handbk. Photogr. vii. 184 Suitable instruments include monochromatic sensitometers, spectrographs, tricolor tablets, ratiometers, color charts, and filter assemblies. 1992 Jrnl. Trop. Ecol. 8 274 The remote sensing system used a spectral ratio meter to compare reflectance of red and near infra red. 2000 Jrnl. Photochem. & Photobiol. A 131 2/2 The intensity ratio of both beams was monitored with an energy Ratiometer equipped with two pyroelectric detectors. This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022). < n.1903
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