Thomson proposed an atomic model, now obsolete.
In 1912
Electron
Neither of them did. The neutron was discovered long after either of them had done most of their major work.
no
yes, the s.s JJ thomson next to s.s smd
JJ tomson * * * * * Or, to spell his name correctly, JJ Thomson.
No, the electron
Electron
JJ Thomson discovered electrons, which showed that atoms are not indivisible.
helped discover atoms an atomic theory
He discovered electrons, isotopes, and invented the mass spectrometer.
J.J. Thomson
J. J. Thomson discovered the electron (particle carrying negative charge) in 1897.
ambot ? nangutana gne ko
I suspect you want J J Thomson. 1856-1940 Discovered the electron and isotopes, invented mass spectrometer.
Francis Aston and J. J. Thomson were discoverers of isotopes.
J.J.Thomson was a physicist. He is credited with discovery of the electron based on his work with the cathode ray. He essential established the first sub-atomic particle.
J.J Thomson is a scientist/philosofer