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Geiger, Johannes Wilhelm

(Encyclopedia)Geiger, Johannes Wilhelm (Hans Geiger) gīˈgər [key], 1882–1945, German physicist. Geiger received a doctorate in physics at Erlangen in 1906, then went to Manchester, where he assisted British c...

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...

Geiger, Abraham

(Encyclopedia)Geiger, Abraham gīˈgər [key], 1810–74, German rabbi, Semitic scholar and Orientalist, theologian, and foremost exponent of the Reform movement in Judaism. When he received his doctorate (1833) fr...

Geiger counter

(Encyclopedia)Geiger counter or Geiger-Müller (G-M) counter gīˈgər-mŭlˈər, –myo͞oˈlər [key], instrument for the detection and quantitative determination of ionizing radiation such as the alpha and beta ...

Wilhelm

(Encyclopedia)Wilhelm. For German rulers thus named, use William.

Lingelbach, Johannes

(Encyclopedia)Lingelbach, Johannes yōhäˈnəs lĭngˈəlbäkhˌ [key], 1622–74, Dutch genre and landscape painter, b. Frankfurt am Main. He first went to Amsterdam in 1637 and settled there about 16 years later...

Koch, Johannes

(Encyclopedia)Koch, Johannes: see Cocceius, Johannes. ...

Koken, Johannes

(Encyclopedia)Koken, Johannes: see Cocceius, Johannes. ...

Kepler, Johannes

(Encyclopedia)Kepler, Johannes yōhäˈnəs kĕpˈlər [key], 1571–1630, German astronomer. From his student days at the Univ. of Tübingen, he was influenced by the Copernican teachings. From 1593 to 1598 he was...

Müller, Johannes

(Encyclopedia)Müller, Johannes: see Regiomontanus. ...