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refract
verb (refracted , refracting ) said of a medium: to cause the direction of (a wave of light, sound, etc) to change when it crosses the boundary between this medium and another through which it travels at a different speed, eg between air and glass.
[17c: from Latin refringere , refractum , from frangere to break]
refractable refrangible.
refracted adjective .
refractive adjective
1 relating to or involving refraction.
2 capable of causing refraction.
refractivity noun .
refractor noun
1 anything that refracts.
2 a refracting telescope.
verb (refracted , refracting ) said of a medium: to cause the direction of (a wave of light, sound, etc) to change when it crosses the boundary between this medium and another through which it travels at a different speed, eg between air and glass.
[17c: from Latin refringere , refractum , from frangere to break]
refractable refrangible.
refracted adjective .
refractive adjective
1 relating to or involving refraction.
2 capable of causing refraction.
refractivity noun .
refractor noun
1 anything that refracts.
2 a refracting telescope.
refracting telescope or refractor
noun , astron a telescope in which light rays are collected by means of a lens of long focal length and magnified by a lens of short focal length.
noun , astron a telescope in which light rays are collected by means of a lens of long focal length and magnified by a lens of short focal length.
refraction
noun
1 physics
a a change in the direction of a wave, eg of light or sound, when it passes from one medium to another in which its speed is different;
b the amount by which the direction of a wave is changed.
2 the eye's ability to refract light.
refractional adjective .
noun
1 physics
a a change in the direction of a wave, eg of light or sound, when it passes from one medium to another in which its speed is different;
b the amount by which the direction of a wave is changed.
2 the eye's ability to refract light.
refractional adjective .
refraction correction
noun , astron the correction made in the calculation of the position of a star, planet, etc to allow for the refraction of its light by the Earth's atmosphere.
noun , astron the correction made in the calculation of the position of a star, planet, etc to allow for the refraction of its light by the Earth's atmosphere.
refractive index
noun , physics (symbol {ngr}) the ratio of the speed of electromagnetic radiation, especially light, in air or a vacuum to its speed in another medium.
noun , physics (symbol {ngr}) the ratio of the speed of electromagnetic radiation, especially light, in air or a vacuum to its speed in another medium.
© Hodder Education
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