refractivityn.

Brit.

/ˌriːfrakˈtɪvᵻti/, U.S.

/rəˌfrækˈtɪvᵻdi/,

/riˌfrækˈtɪvᵻdi/

Origin: Formed within English, by derivation. Etymons: refractive adj., -ity suffix.

Etymology: < refractive adj. + -ity suffix. Compare earlier refractiveness n.

Physics.

The relative ability of a medium, substance, etc., to refract the light passing through it; spec. a quantity equal to n − 1, where n is the refractive index of the medium.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > light > refraction > [noun] > ability to refract

refractility1849

refringency1851

refractivity1889

refringence1896

1889 London, Edinb., & Dublin Philos. Mag. 5th Ser. 28 400 The refractivity of a substance is the difference between the index of refraction of the substance and unity.

1913 J. B. Cohen Org. Chem. Adv. Students II. iv. 296 The difference between the specific refractivities for light of widely different wave length is called the specific dispersive power.

1975 Radio Sci. 10 935 Common error correction techniques, such as making estimates of refractive effects from surface refractivity, rely implicitly on the assumption that the troposphere is horizontally stratified.

2003 H. R. Anderson Fixed Broadband Wireless Syst. Design v. 180 Atmospheric refractivity depends on a number of factors such as temperature, pressure, and humidity.

This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).

单词	refractivity
释义	refractivityn. Brit. /ˌriːfrakˈtɪvᵻti/, U.S. /rəˌfrækˈtɪvᵻdi/, /riˌfrækˈtɪvᵻdi/ Origin: Formed within English, by derivation. Etymons: refractive adj., -ity suffix. Etymology: < refractive adj. + -ity suffix. Compare earlier refractiveness n. Physics. The relative ability of a medium, substance, etc., to refract the light passing through it; spec. a quantity equal to n − 1, where n is the refractive index of the medium. ΘΚΠ the world > matter > physics > electromagnetic radiation > light > refraction > [noun] > ability to refract refractility1849 refringency1851 refractivity1889 refringence1896 1889 London, Edinb., & Dublin Philos. Mag. 5th Ser. 28 400 The refractivity of a substance is the difference between the index of refraction of the substance and unity. 1913 J. B. Cohen Org. Chem. Adv. Students II. iv. 296 The difference between the specific refractivities for light of widely different wave length is called the specific dispersive power. 1975 Radio Sci. 10 935 Common error correction techniques, such as making estimates of refractive effects from surface refractivity, rely implicitly on the assumption that the troposphere is horizontally stratified. 2003 H. R. Anderson Fixed Broadband Wireless Syst. Design v. 180 Atmospheric refractivity depends on a number of factors such as temperature, pressure, and humidity. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022). < n.1889
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