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He conducted his experiment in 1897. Thomson's most important line of work, interrupted only for lectures at Princeton University in 1896, was that which led him, in 1897, to the conclusion that all matter, whatever its source, contains particles of the same kind that are much less massive than the atoms of which they form a part. They are now called electrons, although he originally called them corpuscles. His discovery was the result of an attempt to solve a long-standing controversy regarding the nature of cathode rays, which occur when an electric current is driven through a vessel from which most of the air or other gas has been pumped out. Nearly all German physicists of the time held that these visible rays were produced by occurrence in the ether-a weightless substance then thought to pervade all space-but that they were neither ordinary light nor the recently discovered X rays.
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Jj Thomson's atomic theory?
what is atom
Who proposed the plum-pudding model of the atom?
J J Thomson
What is the contribution of j j Thomson to the development of the periodic table?
JJ Thomson discovered the electron in 1897.
Which model of the atom illustrated that an atom was a cloud of an positive charge with electrons randomly embedded within it?
The plum pudding model by JJ Thomson.
What were drawback of atomic model discovered by JJ Thomson?
he could not explain the theory properly
What did Thomson discover in the atom?
JJ Thomson discovered electrons, which showed that atoms are not indivisible.
Did jj Thomson perform an experiment proving an atom has two parts?
yes, he discovered electrons.
What year was electron found out about?
jj Thomson discovered the electron in the early 1900s
The electron was discovered by who?
JJ Thomson
Who described the Atom As negative charges scattered through a ball of positive Charles?
JJ Thomson, who discovered the electron.
Jj Thomson's atomic theory?
what is atom
Why was Dalton's model of the atom changed after Thomson's experiment?
John Dalton's atomic theory indicated that atoms were indivisible spheres. When JJ Thomson did his work with cathode ray tubes, he discovered that atoms contain electrons, which meant that the atom is not indivisible, that there are smaller particles within.
Who formulated the blueberry muffin model of an atom?
Joseph John Thomson or (JJ Thomson)
What did JJ Thomson call his model of the atom?
Plum-pudding model of atom.
What jj Thomson discover?
J.J.Thomson was a physicist. He is credited with discovery of the electron based on his work with the cathode ray. He essential established the first sub-atomic particle.
Who proposed the plum-pudding model of the atom?
J J Thomson
What did thompson contribute in forming the modern model of the atom?
JJ Thomson discovered that atoms were not indivisible because he discovered that atoms contained negatively charged subatomic particles which he called electrons.
