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Musk, Elon

(Encyclopedia)Musk, Elon ēˈlŏn [key], 1971–, American business executive and entrepreneur, b. Pretoria...

Maxwell, James Clerk

(Encyclopedia)Maxwell, James Clerk klärk [key], 1831–79, great Scottish physicist. After a brilliant career at Edinburgh and Cambridge, where he won early recognition with mathematical papers, he was a professor...

cadmium

(Encyclopedia)cadmium kădˈmēəm [key] [from cadmia, Lat. for calamine, with which cadmium is found associated], metallic chemical element; symbol Cd; at. no. 48; at. wt. 112.411; m.p. 321℃; b.p. 765℃; sp. gr...

Berry, Chuck

(Encyclopedia)Berry, Chuck (Charles Edward Anderson Berry), 1926–2017, American rock music guitarist, singer, and songwriter, b. San Jose, Calif. Berry is widely regarded as one of the leading pioneers of rock mu...

tantalum

(Encyclopedia)tantalum tănˈtələm [key] [from Tantalus], metallic chemical element; symbol Ta; at. no. 73; at. wt. 180.94788; m.p. 2,996℃; b.p. 5,400±100℃; sp. gr. 16.65 at 20℃; valence +2, +3, +4, or +5....

refrigeration

(Encyclopedia)CE5 Compression system of refrigeration refrigeration, process for drawing heat from substances to lower their temperature, often for purposes of preservation. Refrigeration in its modern, portabl...

electronics

(Encyclopedia)electronics, science and technology based on and concerned with the controlled flow of electrons or other carriers of electric charge, especially in semiconductor devices. It is one of the principal b...

Dawes, Charles Gates

(Encyclopedia)Dawes, Charles Gates dôz [key], 1865–1951, American statesman and banker, b. Marietta, Ohio. Admitted (1886) to the bar, Dawes practiced law in Lincoln, Nebr., until 1894 and became interested in v...

Chattanooga

(Encyclopedia)Chattanooga chătˌəno͞oˈgə [key], city (2020 pop. 181,099), seat of Hamilton co., E Tenn., on both ...

lightning

(Encyclopedia)lightning, electrical discharge accompanied by thunder, commonly occurring during a thunderstorm. The discharge may take place between one part of a cloud and another part (intracloud), between one cl...