30/4 nga`y ... sinh nha^.t electron

[Nguyen Tien Zung <tienzung@darboux.math.univ-montp2.fr>]

Hi ca'c ba'c

Ca'ch dda^y 100 na(m, nga`y 30/4/1897 ddu+o+.c coi la`
nga`y pha't minh ra electron. Nga`y ddo' o^ng J.J. Thomson
ddo.c ba'o ca'o o+? Royal Institution in London ve^` ca'c thi'
nghie^.m cu?a o^ng pha't hie^.n ra cathode rays (tia a^m cu+.c?)
go^`m ca'c va^.t co' ddie^.n ti'ch constant ...
O^ng JJ Thomson na`y co' tho+`i la`m vie^.n tru+o+?ng vie^.n Cavendish
no^?i tie^'ng, va` co' ddu+o+.c gia?i Nobel. 

Tui chi? bie^'t co' ba^'y nhie^u, mo+`i ca'c ba'c hu? ly' chi? gia'o
the^m

Va^.y ha~y chu'c mu+`ng nga`y sinh nha^.t 100 tuo^?i cu?a electron,
cu. to^? cu?a nhie^`u nga`nh co^ng nghe^. cao quan tro.ng nha^'t!

Cheers, Z