![]() ![]() ![]() Dalton thought that atoms were indivisible. This new model is referred to as the Plum Pudding Model. A cathode ray tube or CRT is a device that produces cathode rays in a vacuum tube and accelerates them through a magnetic and electric field to strike a. Thomsons experiments with cathode ray tubes helped him to discover the electron (which Dalton did not know about). The New Model of the Atom- Thompson knew atoms were neutral, so there must be a balance of negative and positive particles. This paper describes the simulation of J. The electron is discovered, J J Thomson publishes his discovery of a subatomic particle common to all matter. This was found to be constant regardless of the gas used in the tube and the metal of the cathode and was approximately 1000 times less than the value calculated for hydrogen ions in the electrolysis of liquids. When investigating cathode rays using a highly evacuated discharge tube he was able to use the calculated velocity and deflection of the beam to calculate the ratio of electric charge to mass of the cathode ray. Amber when rubbed builds up static charge. Another British electrochemist John Stoney called it the "electron" from the Greek term "Elecktra" which is the Greek word for amber. He called the electron, the "corpuscle" of electrical charge. This is the official Video of Cathode Ray Tube by sir JJ Thomson.A Cathode ray tube is the forerunner of the television tube. Thomson-Professor of Physics and Director of Cavendish Lab at Cambridge UniversityĮlectrons are distributed throughout uniformly charged positive sphere of atomic dimensions.
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