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Brennus, fl. c.389 b.c., legendary Gallic leader
(Encyclopedia)Brennus, fl. c.389 b.c., legendary Gallic leader. He occupied Rome but failed to take the Capitol from Manlius (Marcus Manlius Capitolinus). According to legend, when the tribute that the Romans had a...hardness
(Encyclopedia)hardness, property of matter commonly described as the resistance of a substance to being scratched by another substance. The degree of hardness is relative, different substances being compared with o...infrared radiation
(Encyclopedia)infrared radiation, electromagnetic radiation having a wavelength in the range from c.75 × 10−6 cm to c.100,000 × 10−6 cm (0.000075–0.1 cm). Infrared rays thus occupy that part of the electrom...Dewar flask
(Encyclopedia)Dewar flask [for Sir James Dewar], container after which the common thermos bottle is patterned. It consists of two flasks, one placed inside the other, with a vacuum between. The vacuum prevents the ...hot spring
(Encyclopedia)hot spring, natural discharge of groundwater having an elevated temperature. Most hot springs result from the emergence of groundwater that has passed through or near recently formed, hot, igneous roc...rigor mortis
(Encyclopedia)rigor mortis rĭˈgər môrˈtĭs [key], rigidity of the body that occurs after death. The onset may vary from about 10 min to several hours or more after death, depending on the condition of the body...Silver Springs
(Encyclopedia)Silver Springs, mineral spring, N central Fla., source of the Silver River. The limestone spring, one of the world's largest and most famous, has a basin 80 ft (24 m) deep and 300 ft (91 m) wide. The ...brazing
(Encyclopedia)brazing, method of joining metal parts using nonferrous filler metals with high melting points such as copper, silver, and aluminum alloys. Brazing differs from soldering (see solder) by using a highe...rhythm, biological
(Encyclopedia)rhythm, biological, or biorhythm, cyclic pattern of physiological changes or changes in activity in living organisms, most often synchronized with daily, monthly, or annual cyclical changes in the env...Li T'ang
(Encyclopedia)Li T'ang lē täng [key], c.1050–1130, Chinese painter of the Sung dynasty. A leader of the academy founded by the Emperor Hui-tsung, he established a mode of painting that was widely followed in su...Browse by Subject
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