Cathode ray tube - paddlewheel (NCPQ)

A paddlewheel is situated inside a cathode ray tube. When the electrons from the cathode strike the paddlewheel fins, the momentum of the electron is transferred to the paddlewheel and it turns and moves away from the electron beam. his demonstration shows that electrons have momentum.
Reference: New Century Physics for Queensland, Units 3 & 4, 3rd Ed, December 2018. Oxford University Press.

Filmed at Moreton Bay College, Brisbane, by Dr Richard Walding, author of New Century Physics for Queensland, 3rd ed, 2019. Oxford University Press.
Website: seniorphysics.com/ncpq

• #people_blogs
• #crookes_tube
• #cathode_ray_tube
• #new_century_physics
• #queensland
• #oxford_university_press_oup
• #momentum_electron
• #paddlewheel