J.J. Thomson Atomic Model | Postulates, Limitations

jj thomson atomic model

J.J.Thomson Atomic Model: J.J. Thomson proposed that an atom consists of a uniform sphere in which positive charge is uniformly distributed. The electrons are embedded into it in such a way as to give the most stable electrostatic arrangement. The sphere’s radius is of the order of 10-10 m, which is equal to the size … Read more

Cathode Ray Experiment | Apparatus, Working

cathode ray experiment

Cathode Rays Experiment J.J.Thomson conducts three experiments with cathode ray experiment. Experiment-1 In 1897, great physician J.J. Thomson conducted his first cathode ray tube experiment to prove that rays emitted from an electron gun are inseparable from the latent charge. He built his cathode ray tube with a metal cylinder on the other end. The … Read more

What is an Electron | Definition, Discovery, Examples

what is an electron

Definition of Electron An electron is a negatively charged subatomic particle. It can be either free (not attached to any atom) or bound to the nucleus of an atom. Electrons in atoms exist in spherical shells of various radii, representing energy levels. The larger the spherical shell, the higher the energy contained in the electron. … Read more