See Also: refraction(encyclopedia)
Refraction(medicine)
refraction(dictionary)
Refraction(health)
law of refraction(medicine)
double refraction(encyclopedia)
Angle of refraction(health)
static refraction(medicine)
refraction, ocular(medicine)
refraction, angle of(medicine)

arles (iou) and refraction (iou)


arles (iou)



arles noun. [¨»:lz] Scot. & north. ME.
[App. repr. medieval Latin dim. of Latin ARRHA: cf. Old French ere, pl. erres, arres, (16) arrhes.]
Money given to bind a bargain; earnest-money. Also fig., an earnest, a foretaste.
Comb.: arles-penny a sum of money given as earnest.

refraction (iou)



refraction noun. L16.
[French refraction or late Latin refractio(n-), formed as REFRACT: see -ION.]
The action of breaking open or breaking up. rare. L16-M17.
Physics. The fact or phenomenon of light, Radio waves, etc., being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density; change in direction of propagation of any wave as a result of its travelling at different speeds at different points along the wave front; an instance of this. E17.
The action of a medium in refracting light; refractive power or effect. M17.
A reduction on a charge or bill. Only in 18.
(The process of determining) the percentage of impurities in a sample of nitre. M-L19.
Measurement of the focusing characteristics of an eye or eyes. E20.
Phrases: angle of refraction the angle made by a refracted ray with the perpendicular to the refracting surface. double refraction: see DOUBLE adjective. index of refraction = refractive index s.v. REFRACTIVE 4. SEISMIC refraction. specific refraction: see SPECIFIC adjective.
Comb.: refraction profiling Geology profiling by means of refraction shooting; refraction shooting Geology seismic prospecting in which shock waves generated at the earth's surface are detected along a line some miles long, giving information about the Nature and depth of underlying strata.
refractionist noun a person skilled in applying the laws of refraction, esp. for the correction of visual defects L19.