• Our apparatus consists of a glass bulb with a fluorescent painted wall.
  • It consists of two terminals, the cathode (negative terminal) and the anode (positive terminal).
  • A metal cross is placed inside the tube.
  • Students can appreciate that when a voltage is applied across the terminals, cathode rays travel from the cathode at the rear of the tube, striking the glass front, making it glow green by fluorescence.
  • A metal cross in the tube casts a shadow, demonstrating that the rays travel in straight lines.
  • Further it can be observed that a magnet creates a horizontal magnetic field through the neck of the tube, bending the rays up, so the shadow of the cross is higher.
  • When the magnet is reversed, it bends the rays down, so the shadow is lower.


There are no reviews yet.

Be the first to review “CATHODE RAY TUBE- SHADOW EFFECT”

Your email address will not be published. Required fields are marked *


Enquiry Now