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titanium

(Encyclopedia)titanium tītāˈnēəm, tĭ– [key] [from Titan], metallic chemical element; symbol Ti; at. no. 22; at. wt. 47.867; m.p. 1,675℃; b.p. 3,260℃; sp. gr. 4.54 at 20℃; valence +2, +3, or +4. Titani...

radiation sickness

(Encyclopedia)radiation sickness, harmful effect produced on body tissues by exposure to radioactive substances. The biological action of radiation is not fully understood, but it is believed that a disturbance in ...

flax

(Encyclopedia)flax, common name for members of the Linaceae, a family of annual herbs, especially members of the genus Linum, and for the fiber obtained from such plants. The flax of commerce (several varieties of ...

Amis, Sir Kingsley

(Encyclopedia)Amis, Sir Kingsley āˈmĭs [key], 1922–95, English novelist. He attended St. John's College, Oxford (B.A., 1949) and for some 20 years taught at Oxford, Swansea, and Cambridge and in the United Sta...

infantry

(Encyclopedia)infantry, body of soldiers who fight in an army on foot and are equipped with hand-carried weapons, in contradistinction originally to cavalry and other branches of an army. Infantry has often been di...

relativity

(Encyclopedia)relativity, physical theory, introduced by Albert Einstein, that discards the concept of absolute motion and instead treats only relative motion between two systems or frames of reference. One consequ...

pulsar

(Encyclopedia)pulsar, in astronomy, a neutron star that emits brief, sharp pulses of energy instead of the steady radiation associated with other natural sources. The study of pulsars began when Antony Hewish and h...

Araucanians

(Encyclopedia)Araucanians əroukänˈēən [key], South American people, occupying most of S central Chile at the time of the Spanish conquest (1540). The Araucanians were an agricultural people living in small set...

smoke

(Encyclopedia)smoke, visible gaseous product of incomplete combustion. Smoke varies with its source, but it usually comprises hot gas and suspended particles of carbon and tarry substances, or soot. To reduce the a...

work

(Encyclopedia)work, in physics and mechanics, transfer of energy by a force acting to displace a body. Work is equal to the product of the force and the distance through which it produces movement. Although both fo...