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mass, in physics
(Encyclopedia)mass, in physics, the quantity of matter in a body regardless of its volume or of any forces acting on it. The term should not be confused with weight, which is the measure of the force of gravity (se...Shafi'i, al-
(Encyclopedia)Shafi'i, al- (Abu Abdullah Muhammad ibn Idris al-Shafi'i), 767–820, Islamic jurist. Raised and educated in Mecca and Medina, he taught in Egypt and Baghdad. His teachings laid the groundwork for the...distemper
(Encyclopedia)distemper, in veterinary medicine, highly contagious, catarrhal, often fatal disease of dogs. It also affects wolves, foxes, mink, raccoons, and ferrets. Distemper is caused by a filtrable virus that ...flamethrower
(Encyclopedia)flamethrower, mechanism for shooting a burning stream of liquid or semiliquid fuel at enemy troops or positions. Primitive types of flamethrowers, consisting of hollow tubes filled with burning coals,...flywheel
(Encyclopedia)flywheel, heavy metal wheel attached to a drive shaft, having most of its weight concentrated at the circumference. Such a wheel resists changes in speed and helps steady the rotation of the shaft whe...mixture
(Encyclopedia)mixture, in chemistry, a physical combination of two or more pure substances (i.e., elements or compounds). A mixture is distinguished from a compound, which is formed by the chemical combination of t...lipoprotein
(Encyclopedia)lipoprotein lĭpˌəprōˈtēn [key], any organic compound that is composed of both protein and the various fatty substances classed as lipids, including fatty acids and steroids such as cholesterol. ...clock
(Encyclopedia) CE5 A pendulum clock: Weight-driven clock mechanism clock, instrument for measuring and indicating time. Predecessors of the clock were the sundial, the hourglass, and the clepsydra. See also watc...Achilles' tendon
(Encyclopedia)Achilles' tendon (tendo calcaneus) tĕnˈdō kălkāˈnēəs [key], sinew prominent at the back of the ankle, connecting the tendons of the calf muscles to the heelbone. When the musculature contracts...Christopher, Saint
(Encyclopedia)Christopher, Saint krĭsˈtəfər [key] [Gr.,=Christ bearer], 3d cent.?, martyr of Asia Minor. His characteristic legend is that one day when he was carrying a little child over a river, he felt the c...Browse by Subject
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