Who had discovered electron?a)Niels Bohrb)E. Goldsteinc)J.J.Thomsond)J...
Thomson conducted a series of experiments in which he used a cathode ray tube to study 'cathode rays'. He discovered that these rays were composed of negatively charged particles, which were later named electrons. His work marked the discovery of the first subatomic particle, revolutionizing the study of atomic structure.
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Who had discovered electron?a)Niels Bohrb)E. Goldsteinc)J.J.Thomsond)J...
Discovery of Electron
The discovery of the electron is credited to J.J. Thomson, a British physicist, in the late 19th century.
J.J. Thomson's Experiment
- In 1897, Thomson conducted a series of experiments with cathode rays in a cathode ray tube.
- He observed that the rays were deflected by electric and magnetic fields, concluding that they were made up of negatively charged particles.
- Thomson then calculated the charge-to-mass ratio of these particles, which was much smaller than that of any known atom.
Identification of Electron
- Thomson proposed that these negatively charged particles were fundamental constituents of atoms, which he named "corpuscles" but later became known as electrons.
- This discovery revolutionized the understanding of atomic structure, leading to the development of the plum pudding model of the atom.
Significance of the Discovery
- The discovery of the electron laid the foundation for the field of particle physics and quantum mechanics.
- It also led to further research and discoveries in the field of atomic and subatomic particles.
In conclusion, J.J. Thomson's discovery of the electron was a groundbreaking achievement in the field of physics, shaping our understanding of the fundamental building blocks of matter.