Flag Inorganic Chemistry> jj-thomsons-electron-discovery...
question mark

what is the phenomenon in the passage of electricity through gases in discharge ray tube between two electrodes in discharge jj thomonsons electron discovery experiment?why did he create high voltage and liw pressure?

lucky kolipaka , 11 Years ago
Grade 9
anser 1 Answers
ruchi yadav

Last Activity: 10 Years ago

Thomson investigated whether or not the rays could be deflected by an electric field.Previous experimenters had failed to observe this, but Thomson believed their experiments were flawed because their tubes contained too much gas.

Thomson constructed aCrookes tubewith a near-perfect vacuum. At the start of the tube was the cathode from which the rays projected. The rays were sharpened to a beam by two metal slits – the first of these slits doubled as the anode, the second was connected to the earth. The beam then passed between two parallel aluminium plates, which produced an electric field between them when they were connected to a battery. The end of the tube was a large sphere where the beam would impact on the glass, created a glowing patch. Thomson pasted a scale to the surface of this sphere to measure the deflection of the beam.

When the upper plate was connected to the negative pole of the battery and the lower plate to the positive pole, the glowing patch moved downwards, and when the polarity was reversed, the patch moved upwards.



Thank You
Ruchi
Askiitians Faculty

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...