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Alpheus Hyatt
Alpheus Hyatt 1838-1902, American zoologist, b. Washington, D.C., grad. Harvard, 1862. He was a devoted follower of Louis Agassiz. From 1870, Hyatt was custodian and later curator of the Boston Society of Natural History. He also taught zoology and paleontology at the Massachusetts Institute of Tec...
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Alfred Pritchard Sloan, Jr.
Alfred Pritchard Sloan, Jr. 1875-1966, American businessman and philanthropist, b. New Haven, Conn., grad. Massachusetts Institute of Technology, 1895. He began his career as a draftsman for the Hyatt Roller Bearing Company, becoming its president in 1901; under his leadership the income and assets...
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Newark
Newark 1 City (1990 pop. 37,861), Alameda co., W Calif., on the east side of San Francisco Bay; inc. 1955. There is food processing and the manufacture of plastics, furniture, feeds, semiconductors, chemicals, machine parts, paper and gypsum products, and computers. Salt is harvested from the bay...
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plastic
plastic any organic material with the ability to flow into a desired shape when heat and pressure are applied to it and to retain the shape when they are withdrawn.
Composition and Types of Plastic
A plastic is made up principally of a binder together with plasticizers, fillers, pigments,...
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Hawaii
Hawaii , 50th state of the United States, comprising a group of eight major islands and numerous islets in the central Pacific Ocean, c.2,100 mi (3,380 km) SW of San Francisco.
Facts and Figures
Area, 6,450 sq mi (16,706 sq km). Pop. (2000) 1,211,537, a 9.3% increase since the 1990 cen...
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dog days
dog days name for the most sultry period of summer, from about July 3 to Aug. 11. Named in early times by observers in countries bordering the Mediterranean, the period was reckoned as extending from 20 days before to 20 days after the conjunction of Sirius (the dog star) and the sun. In the lati...
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New Year's Day
New Year's Day among ancient peoples the first day of the year frequently corresponded to the vernal or autumnal equinox, or to the summer or winter solstice. In the Middle Ages it was celebrated among Christians usually on Mar. 25. After the adoption of the Gregorian calendar that began in 1582, t...
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whirlwind
whirlwind revolving mass of air resulting from local atmospheric instability, such as that caused by intense heating of the ground by the sun on a hot summer day. Examples of whirlwinds are waterspouts , tornadoes , small whirls of dust or leaves, and the sand whirls of the desert, called dust de...
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day
day period of time for the earth to rotate once on its axis. The ordinary day, or solar day, is measured relative to the sun, being the time between successive passages of the sun over a stationary observer's celestial meridian . The length of a solar day varies during the course of a year, so f...
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solstice
solstice [Lat.,=sun stands still], in astronomy, either of the two points on the ecliptic that lie midway between the equinoxes (separated from them by an angular distance of 90°). At the solstices the sun's apparent position on the celestial sphere reaches its greatest distance above or ...
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