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Weierstrass, Karl Wilhelm Theodor

(Encyclopedia)Weierstrass, Karl Wilhelm Theodor kärl vĭlˈhĕlm tāˈōdōr vīˈərshträs [key], 1815–97, German mathematician. From 1864 he was professor of mathematics at the Univ. of Berlin. His developmen...

Bothe, Walther Wilhelm Georg

(Encyclopedia)Bothe, Walther Wilhelm Georg, 1891–1957, German physicist, Ph.D. Univ. of Berlin, 1923. Bothe was a researcher at the Reich Physical and Technical Institute (1913–30) and a professor at Heidelberg...

Tischbein, Johann Heinrich Wilhelm

(Encyclopedia)Tischbein, Johann Heinrich Wilhelm yōˈhän hīnˈrĭkh vĭlˈhĕlm tĭshˈbīn [key], 1751–1829, German classical painter and etcher. He was a popular portrait painter of the German royalty. He al...

Sommerfeld, Arnold Johannes Wilhelm

(Encyclopedia)Sommerfeld, Arnold Johannes Wilhelm ärˈnōlt yōhänˈəs vĭlˈhĕlm zômˈərfĕlt [key], 1868–1951, German physicist and teacher. He received a Ph.D. at Königsburg Univ. in 1891 and was a prof...

will, in philosophy and psychology

(Encyclopedia)will, in philosophy and psychology, term used to describe that which is alleged to stimulate the motivation of purposeful activity. It is characteristic of the will that it can be observed only in one...

Chladni, Ernst Florens Friedrich

(Encyclopedia)Chladni, Ernst Florens Friedrich ĕrnst flōˈrĕns frēˈdrĭkh klädˈnē [key], 1756–1827, German physicist. An authority on acoustics, he made studies of the transmission of sound in various gas...

Hügel, Friedrich, Baron von

(Encyclopedia)Hügel, Friedrich, Baron von frēˈdrĭkh bärōnˈ fən hüˈgəl [key], 1852–1925, British Roman Catholic religious writer, b. Florence; son of an Austrian diplomat. After his marriage (1873), Hü...

Hayek, Friedrich August von

(Encyclopedia)Hayek, Friedrich August von frēˈdrĭkh ougo͝ostˈ fôn hīˈək [key], 1899–1992, British economist, b. Vienna. He was raised and educated in Austria and taught at the London School of Economics ...

Hecker, Friedrich Franz Karl

(Encyclopedia)Hecker, Friedrich Franz Karl frēˈdrĭkh fränts kärl hĕkˈər [key], 1811–81, German revolutionary. A lawyer, he was a leader of the radical republicans in the grand duchy of Baden and during th...

Grimm, Friedrich Melchior, Baron

(Encyclopedia)Grimm, Friedrich Melchior, Baron frēˈdrĭkh mĕlˈkhēôr bärōnˈ grĭm [key], 1723–1807, German man of letters in France. He contributed to the Encyclopédie articles on music that were bellige...