(Encyclopedia) hockey, field, outdoor stick and ball game. Field hockey, like many sports, is of obscure origins, but traces in one form or another to the ancient Egyptians and Persians, making it…
(Encyclopedia) dementiadementiadĭmĕnˈshə [key] [Lat.,=being out of the mind], progressive deterioration of intellectual faculties resulting in apathy, confusion, and stupor. In the 17th cent. the…
(Encyclopedia) stroke, destruction of brain tissue as a result of intracerebral hemorrhage or infarction caused by thrombosis (clotting) or embolus (obstruction in a blood vessel caused by clotted…
(Encyclopedia) calligraphycalligraphykəlĭgˈrəfē [key] [Gr.,=beautiful writing], skilled penmanship practiced as a fine art. See also inscription; paleography.
The art of calligraphy is also…
(Encyclopedia) memory, in psychology, the storing of learned information, and the ability to recall that which has been stored. It has been hypothesized that three processes occur in remembering:…
(Encyclopedia) shrimp, small marine decapod crustacean with 10 jointed legs on the thorax, well-developed swimmerets on the abdominal segments, and a body that is compressed laterally. Shrimp differ…
(Encyclopedia)
CE5
Examples of the development of cuneiform
cuneiformcuneiformky&oomacr;nēˈĭfôrm [key] [Lat.,=wedge-shaped], system of writing developed before the last centuries of the 4th…
(Encyclopedia) diesel engine, type of internal-combustion engine invented by the German engineer Rudolf Diesel and patented by him in 1892. Although his engine was designed to use coal dust as fuel,…
(Encyclopedia)
CE5
Internal-combustion engines: In the four-stroke reciprocating engine (above), a mixture of fuel and air is taken into the chamber on the down-stroke of the piston, is compressed…
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