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wind chill

(Encyclopedia)wind chill, the cooling effect of wind and temperature combined, expressed in terms of the effect produced by a lower, windless temperature, also called wind chill factor, wind chill temperature, wind...

solar time

(Encyclopedia)solar time, time defined by the position of the sun. The solar day is the time it takes for the sun to return to the same meridian in the sky. Local solar time is measured by a sundial. When the cente...

Rukeyser, Muriel

(Encyclopedia)Rukeyser, Muriel ro͞oˈkīsər [key], 1913–80, American poet, b. New York City. Her poetry expresses the beauty and passion in the confrontation between the individual and her constantly changing w...

Foster, Norman Robert, Baron Foster of Thames Bank

(Encyclopedia)Foster, Norman Robert, Baron Foster of Thames Bank, 1935–, British architect, b. Manchester, grad. Manchester Univ. school of architecture (1961), Yale school of architecture (M.A., 1962). Foster an...

firefly

(Encyclopedia)firefly or lightning bug, small, luminescent, carnivorous beetle of the family Lampyridae. Fireflies are well represented in temperate regions, although the majority of species are tropical and subtro...

Amano, Hiroshi

(Encyclopedia)Amano, Hiroshi, 1960–, Japanese physicist, Ph.D. Nagoya Univ., Japan, 1989. He is a professor at Nagoya Univ. in Japan. Amano is the joint recipient with Shuji Nakamura and Isamu Akasaki of the 2014...

photometry

(Encyclopedia)photometry fōtŏmˈətrē [key], branch of physics dealing with the measurement of the intensity of a source of light, such as an electric lamp, and with the intensity of light such a source may cast...

sun, in astronomy

(Encyclopedia)CE5 Structure of the sun sun, intensely hot, self-luminous body of gases at the center of the solar system. Its gravitational attraction maintains the planets, comets, and other bodies of the sola...

viaduct

(Encyclopedia)viaduct vīˈədŭktˌ [key] [Lat.,=road conveyor], type of bridge for carrying a highway or railroad over a valley, over low ground, or over a road. It is commonly constructed in the form of several ...

Atalanta

(Encyclopedia)Atalanta ätəlănˈtə [key], in Greek mythology, huntress famous for her speed and skill. She took part in the Calydonian hunt and was rewarded by Meleager with the pelt of the boar. Later, warned b...