1 jan 1897 ano - J.J. THOMSON (1856-1940 CE) date of discovery (1897 CE) Discovered negatively charged particles (electrons) using cathode ray tubes and proposed the "plum pudding" model of the atom which consisted of a uniform sphere of positive charge with negative electrons embedded in the sphere. Even though Thomson’s atomic model was inaccurate and had a few drawbacks, Thomson's model is important because it introduced the notion that an atom consisted of charged particles and it provided the base for sev
Adicionado na linha do tempo:
Data:
1 jan 1897 ano
Agora
~ 127 years ago
