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Index (C)
CA - CC
CD - CF
CG - CJ
CK - CN
COA - CON
COO - CR
CS - CV
CW - CZ
Moment of truth
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As at 2005, the major source of antioxidants in the US diet is coffee, followed by tea, bananas and dried beans. |
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CD - CF
cellulose Chem.
A polysaccharide that consists of a long unbranched chain of beta-glucose, linked via glycosidic oxygen at the 1 and 4 positions of the succesive glucose units. It has a formula of
(C6H10O5)n. It is a straight polymer chain and is the main constituent of the cell walls that provides the rigidity of all higher green plants and some algae and fungi.
Becuase of its tough, fibrous nature, cellulose is used in the textile industry for the production of artificial silk and cotton.
Cepheid Astron.
A type of variable star that regularly pulsates in size and changes in brightness, from a few days to a few weeks. Cepheids are usually F or G giant stars and their luminosities are closely linked to their periods. For this reason, their magnitudes can be predicted and the longer the period the
more powerful the star. Named after Delta Cephei, the first discovered member of the class, by Goodricke in 1784.
Cerenkov radiation Phys.
The radiation emitted by a charged particle when it travels through a medium faster than the speed of light in that medium. Widely used in particle detectors and counters. It occurs when the refractive index is high, such as in
water, and the radiation is usually emitted in the same direction as the charged particle is traveling.
CD - CF
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