Electron
______________________


( ) atom .

. . J.J. Thomson.

1897







ޡ ǡ . Particle Physics.



J.J. Thomson 1856 ǡ 14 ɡ Cavendish 1884 13 ... .
Julius Plucker ǡ

1896 ʡ Cathode Ray Tube ѡ ɡ .
ޡ ޡ 1/1000 ( ) .

electron 1891 on ... .