He demonstrated that the rays were deflected by both electric and magnetic fields, proving they were not waves but streams of negatively charged particles. At the close of the 19th century, the atom was largely a theoretical construct, a tiny, indivisible sphere as proposed by John Dalton.
J.J. Thomson's Atomic Model Contribution and Electron Discovery
This systematic and reproducible experimentation is a cornerstone of the scientific method and solidified his discovery beyond doubt. The "Plum Pudding" Model and Lasting Legacy Immediately following his discovery, Thomson was tasked with explaining how these negatively charged electrons were arranged within the atom.
The critical breakthrough came when he placed electrically charged plates and magnets around the tube. Thomson’s discovery opened the door to modern physics, directly leading to the development of quantum mechanics, electronics, and our entire understanding of chemistry and material science.
Thomson's Atomic Model Evolution and Groundbreaking Electron Discovery
Thomson began his meticulous investigations. Methodology and Ingenuity Thomson’s genius was not just in observing the deflection but in his precise methodology.
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