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Glossary Of Physics Terms
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Calorie:A unit of heat, 1Calorie = 4.186 joules.
Candela:The S.I. unit of luminous intensity defined as the luminous intensity in a given direction of a source that emits monochromatic photons of frequency 540 x 1012 Hz & has a radiant intensity in that direction of 1/683 W/sr
Capacitance:The ratio of charge stored per increase in potential difference.
Capacitor:Electrical device used to store charge and energy in the electrical field.
Capillarity:The rise or fall of a liquid in a tube of very fine bore.
Carnot's theorem:No engine operating between two temperatures can be more efficient than a reversible engine working between the same two temperatures.
Centrifugal force:An outward pseudo force acting on a body in circular motion.
Centripetal force:The radial force required to keep an object moving in a circular path; it is equal to mv2/r.
Charles' law:For a given mass of a gas at constant pressure, the volume is directly proportional to the temperature.
Chromatic aberration:An optical lens defect causing color fringes, because the lens brings different colors of light to focus at different points.
Clausius' statement of second law of Thermodynamics:It is not possible that at the end of a cycle of changes heat has been transferred from a colder body to a hotter body without producing some other effect.
Closed system:The system which cannot exchange heat or matter with the surroundings.
Coefficient of linear expansion:The increase in length per unit original length per degree rise in temperature.
Coefficient of superficial expansion:The increase in area per unit original area per degree rise in temperature.
Coefficient of volumetric expansion:The increase in volume per unit original volume per degree rise in temperature.
Coherent source:A source in which there is a constant phase difference between waves emitted from different parts of the source.
Condensation point:The temperature at which a gas or vapor changes back to liquid.
Conduction:The transfer of heat from a region of higher temperature to a region of lower temperature by increased kinetic energy moving from molecule to molecule.
Convection:The transfer of heat by the actual transfer of matter.
Coulomb's law:The force between any two charges is directly proportional to the product of charges and inversely proportional to the square of the distance between the charges.
Critical angle:The angle of incidence in a denser medium for which angle of refraction is .
Cyclotron:A device used to accelerate the charged particles.

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