Proton (1H1, H+, P)
(1) Proton was discovered by Goldstein and is positively charged particle. It is a component particle of anode rays.
(2) Goldstein (1886) used perforated cathode in the discharge tube and repeated Thomson's experiment and observed the formation of anode rays. These rays also termed as positive or canal rays.
(3) Properties of anode rays
(i) Anode rays travel in straight line.
(ii) Anode rays are material particles.
(iii) Anode rays are positively charged.