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he supposed that matter was discontinuous and was made up of indivisible particles
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discovered the rays that did not deviate from an electrically charged plate, capable of crossing materials of great thickness W.K.Roentgen
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I study mysterious rays called cathode rays that appeared in gas-filled tubes J.J.Thomson
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The atom is formed by a solid body with a positive charge , to which electrons of negative charge are encrusted
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The positive charge of the atom is concentrated in the nucleus.
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Based on the rutherfod model, with one fundamental modification: the electrons are in specific orbits , called stationary orbits, where they are stable