describe discovery of electons
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A gass discharged tube is fitted with two metallic electrodes acting as cathode and anode.this tube is filled with a gass ,air or vapours of a substance at any desired pressure.the electrides are connected to a source of high voltage.this tube is attached to vaccum.and are connected by electricity.
when the pressure inside the tube is reduced and a hogh voltage of 5000 to 10000 volts is applied then a electric discharge take place through the gass producing a uniform glow inside the tube.when pressure is further reduced to 0.01torr the glow disappears .some rays are produced which create fluresence on the glass wall opposite to the cathode. they rays are called cathode rays.or electrons.
i really hope that you wilk find it helpful. stay blessed
A gass discharged tube is fitted with two metallic electrodes acting as cathode and anode.this tube is filled with a gass ,air or vapours of a substance at any desired pressure.the electrides are connected to a source of high voltage.this tube is attached to vaccum.and are connected by electricity.
when the pressure inside the tube is reduced and a hogh voltage of 5000 to 10000 volts is applied then a electric discharge take place through the gass producing a uniform glow inside the tube.when pressure is further reduced to 0.01torr the glow disappears .some rays are produced which create fluresence on the glass wall opposite to the cathode. they rays are called cathode rays.or electrons.
i really hope that you wilk find it helpful. stay blessed
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The electron was discovered in 1896, by the British physicist J. J. Thomson, using a cathode rays while doing discharge tube experiments. Thomson also determined e/m, ratio of the charge e to the mass m of the material particle which constituted these rays. ... These protons add the overall positive charge of an atom.
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