Newtoni eelne füüsika areng
raadiumiks. 1898 avastas Marie Curie ka tooriumi radioaktiivsuse.
Johannes (Hans) Wilhelm Geiger
(September 30, 1882 September 24, 1945) was a German physicist. He is perhaps best known
as the co-inventor of the Geiger counter and for the Geiger-Marsden experiment which
discovered the atomic nucleus. Geiger was born at Neustadt-an-der-Haardt, Germany. He was
one of five children born to the Indologist Wilhelm Ludwig Geiger, who was professor at the
University of Erlangen.
Nagaoka Hantaro
(August 15, 1865 December 11, 1950) was a Japanese physicist and a pioneer of Japanese
physics in the early Meiji period.
In 1904 he developed an early, incorrect "planetary model" of the atom (the Saturnian model).[1]
The model was based around an analogy to the explanation of the stability of the Saturn rings
(the rings are stable because the planet they orbit is very, very massive). So, the model made two
predictions:
* a very massive nucleus (in analogy to a very massive planet)
annaabi.ee 
