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Thomson atomic model, earliest theoretical description of the inner structure of atoms, proposed about 1900 by William Thomson (Lord Kelvin) and strongly supported by Sir Joseph John Thomson, who had discovered (1897) the electron, a negatively charged part of every atom.
What was JJ Thomson’s claim?
Summary. J.J. Thomson’s experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged “soup.”
What is JJ Thomson most known for?
Thomson, in full Sir Joseph John Thomson, (born December 18, 1856, Cheetham Hill, near Manchester, England—died August 30, 1940, Cambridge, Cambridgeshire), English physicist who helped revolutionize the knowledge of atomic structure by his discovery of the electron (1897).
Who was j.j.thomson and what did he do?
J.J. Thomson Biography. Physicist (1856–1940) J.J. Thomson was a Nobel Prize winning physicist whose research led to the discovery of electrons. J.J. Thomson was born on December 18, 1856, in Cheetham Hill, England, and went on to attend Trinity College at Cambridge, where he would come to head the Cavendish Laboratory.
How did j.j.thomson contribute to the atomic theory?
J.J. Thomson is credited with the discovery of the electron, the negatively-charged particle in the atom. He is known for the Thomson atomic theory. Many scientists studied the electric discharge of a cathode ray tube.
What did j.j.thomson think about the deflection of rays?
Joseph John “J. J.” Thomson. Thomson interpreted the deflection of the rays by electrically charged plates and magnets as evidence of “bodies much smaller than atoms” (electrons) that he calculated as having a very large value for the charge-to-mass ratio. Later he estimated the value of the charge itself.
Why was j.j.thomson interested in James Clerk Maxwell?
In addition to atoms, Thomson began to take a serious interest in James Clerk Maxwell’s equations, which had revealed electricity and magnetism to be manifestations of a single force – the electromagnetic force – and had revealed light to be an electromagnetic wave.