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Habermas, Jürgen

(Encyclopedia)Habermas, Jürgen yûrˈgən häˈbûrmäs [key], 1929–, German philosopher. He is a professor at the Univ. of Frankfurt (emeritus since 1994) and is the best-known contemporary proponent of critica...

boiling point

(Encyclopedia)boiling point, temperature at which a substance changes its state from liquid to gas. A stricter definition of boiling point is the temperature at which the liquid and vapor (gas) phases of a substanc...

Charles, Jacques Alexandre César

(Encyclopedia)Charles, Jacques Alexandre César zhäk älĕksäNˈdrə sāzärˈ shärl [key], 1746–1823, French physicist. He confirmed Benjamin Franklin's electrical experiments, became interested in aeronautic...

Biot, Jean Baptiste

(Encyclopedia)Biot, Jean Baptiste zhäN bätēstˈ byō [key], 1774–1862, French physicist, grad. École Polytechnique (1797). He taught mathematics at Beauvais before becoming (1800) professor of mathematical ph...

sulfuric acid

(Encyclopedia)sulfuric acid, chemical compound, H2SO4, colorless, odorless, extremely corrosive, oily liquid. It is sometimes called oil of vitriol. Although sulfuric acid is now one of the most widely used c...

Gamow, George

(Encyclopedia)Gamow, George gămˈŏf [key], 1904–68, Russian-American theoretical physicist and author, b. Odessa. A nuclear physicist, Gamow is better known to the public for his excellent books popularizing ab...

Pissarides, Christopher Antoniou

(Encyclopedia)Pissarides, Christopher Antoniou, 1948–, British-Cypriot economist, b. Nicosia, Cyprus, Ph.D. London School of Economics, 1973. He has been a professor at the London School of Economics since 1976. ...

Schumpeter, Joseph Alois

(Encyclopedia)Schumpeter, Joseph Alois yōˈzĕf äˈlōēs sho͝omˈpāˌtər [key], 1883–1950, Austrian-American economist, LL.D. Univ. of Vienna, 1906. He began practicing law but turned to teaching two years ...

Bolzano, Bernard

(Encyclopedia)Bolzano, Bernard bōltsäˈnō [key], 1781–1848, Czech philosopher, mathematician, and theologian. Though as a Catholic priest he himself was primarily concerned with religious and ethical questions...

Poisson, Siméon Denis

(Encyclopedia)Poisson, Siméon Denis sēmāôNˈ dənēˈ pwäsôNˈ [key], 1781–1840, French mathematician and physicist. From 1802 he taught at the École polytechnique, Paris, and was also on the faculty of sc...