See under .
a number indicating the speed of light in a given medium as either the ratio of the speed of light in a vacuum to that in the given medium (absolute index of refraction) or the ratio of the speed of light in a specified medium to that in the given medium (relative index of refraction) Symbol: n.
another name for refractive index
index of refraction
A measure of the extent to which a substance slows down light waves passing through it. The index of refraction of a substance is equal to the ratio of the velocity of light in a vacuum to its speed in that substance. Its value determines the extent to which light is refracted when entering or leaving the substance.
- Absolute judgment
noun (psychol) any judgment about a single stimulus, e.g. about the value of one of its properties or about whether it is present or absent Compare comparative judgment Historical Examples In view of such inconsistencies, how is it possible to pass any absolute judgment on men? Memoirs of the Duchesse de Dino v.2/3, 1836-1840 Duchesse […]
- Absolute leukocytosis
absolute leukocytosis absolute leukocytosis n. An increase in the total number of white blood cells in the blood.
- Absolute magnitude
the magnitude of a star as it would appear to a hypothetical observer at a distance of 10 parsecs or 32.6 light-years. Historical Examples These relations are, absolute magnitude of force, relation of force and of the different arms mutually, and nature of the country. On War Carl von Clausewitz The absolute magnitude of my […]
- Absolute majority
a number of votes constituting more than half of the number cast. a number of voters constituting more than half of the number registered. Contemporary Examples The House normally requires an absolute majority of 218 but, because of vacancies, that number is currently 217. Debt Limit Stalemate Continues On Capitol Hill Ben Jacobs October 14, […]