MATERIALS permanent magnet oscilloscope or other operating cathode ray tube iron filings and overhead projector (optional) PROCEDURE The influence of a magnetic field on a moving charged particle can be illustrated by bringing a permanent magnet (bar or horseshoe) near the screen of a cathode ray tube.
(particle; by bringing; a permanent magnet; near the screen of a cathode ray tube)
particle
by bringing
a permanent magnet near the screen of a cathode ray tube