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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.

Alasco, Johannes

(Encyclopedia)Alasco or à Lasco, Johannes: see Laski, John. ...

Cocceius, Johannes

(Encyclopedia)Cocceius, Johannes kŏksēˈəs [key], 1603–69, German theologian, whose surname was originally Koch or Koken. Born in Bremen, he went to Holland, where he was professor at Francken and Leiden. He p...

Clericus, Johannes

(Encyclopedia)Clericus, Johannes: see Le Clerc, Jean. ...

Evald, Johannes

(Encyclopedia)Evald, Johannes: see Ewald, Johannes. ...

Fibiger, Johannes

(Encyclopedia)Fibiger, Johannes yôhäˈnəs fēˈbēgər [key], 1867–1928, Danish pathologist and physician. He served as professor of pathological anatomy at the Univ. of Copenhagen. For his experimental studie...