- Hans
Friedrich Karl
Geitel (16 July 1855 in
Braunschweig – 15
August 1923 in Wolfenbüttel) was a
German physicist. He is
credited with
coining the phrase...
- (1869–1883),
Eugen Goldstein (1885), and
Julius Elster and Hans
Friedrich Geitel (1882–1889).
Thermionic emission was
observed again by
Thomas Edison in...
-
Johan Georg Geitel (1683–1771), also
Johann or Hans Jürgen Geitell,
Geittel or Geittell, was a German-born
painter in
Finland when it was
under Swedish...
-
Examples from the
Metropolitan Baumgarten, p. 171 Payne, Blanche; Winakor,
Geitel; Farrell-Beck Jane: The
History of Costume, from the
Ancient Mesopotamia...
-
believed to
portray Kalm,
although some modern-day
historians have
suggested it may be of Kalm's
colleague Pehr Gadd.
Painted by
Johan Georg Geitel, 1764....
-
Cambridge University Press, 2003, ISBN 0-521-34107-8. Payne, Blanche; Winakor,
Geitel; Farrell-Beck Jane (1992) The
History of Costume, from the
Ancient Mesopotamia...
-
involving submarine telegraph cables.
Johann Elster (1854–1920) and Hans
Geitel (1855–1923),
students in Heidelberg,
investigated the
effects produced by...
-
Heinrich Hertz in 1887. 1904 –
Julius Elster,
together with Hans
Friedrich Geitel,
devised the
first practical photoelectric cell. 1905 –
Albert Einstein...
-
using ultraviolet light.
Significant for
practical applications,
Elster and
Geitel two
years later demonstrated the same
effect using visible light striking...
- – 6
April 1920) was a
teacher and physicist.
Elster and Hans
Friedrich Geitel, the son of a
Forstmeister who had
moved to
Blankenburg with his family...
