Magnetic deflection (Fig. 54) is generally used with TV, computer-display, and radar CRTs, where high resolution and brightness are required. Magnetic coils are placed in pairs on the outside of the CRT to provide horizontal and vertical magnetic fields perpendicular to the electron flow.

observe the effect of a magnetic field on a charged particle. calculate the charge to mass ratio of an electron; verify the "right hand rule" which governs the direction of the force on the charge. determine the magnetic field of the Earth and a solenoid using a Gaussmeter; Notes: We have talked about the movement of an electron in an electric ...

In this lab, we use a Cathode Ray Tube (CRT) to measure the effects of an electric and magnetic field on the motion of a charged particle, in this case the electron. The Lorentz force law, Equation 1, tells us that a charged particle experiences a force in …

Magnetic declination / magnetic variation: the Earth’s magnetic axis is not parallel to its geographic axis (axis of rotation) a compass reading deviates from geographic north. Magnetic inclination: the magnetic field is not horizontal at most of earth’s surface, its angle up or down. The magnetic field is vertical at magnetic poles.

An alternate method for laterally scanning the electron beam in a CRT utilizes magnetic deflection applied by coils that produce a magnetic field perpendicular to the electron beam, as illustrated in Figure 5.1.2.

2023年1月1日 · The magnetic deflection system is a system whereby the electron beam is deflected by a magnetic field perpendicular to the direction of motion of the electrons. The deflection system has been widely used in various electron …

5 天之前 · To determine the magnetic dipole moment (m) of a bar magnet and horizontal intensity (BH) of earth’s magnetic field using a deflection magnetometer.

In this exercise we ask how a stream of negatively charged particles responds to electric and magnetic fields, and thereby determine the speed of the particles and their charge to mass ratio. Consider a beam of particles with charge. e and mass m, moving at speed u through a vacuum.

6 天之前 · The bar magnet is placed horizontally, parallel to the arm of the deflection magnetometer, at a distance d from the center of the compass needle, chosen so that the deflection lies between 30° and 60°. The reading of the ends of the pointer are noted. The magnet is then reversed at the same position and the readings of the pointer are again noted.

The deflection follows the direction of the current and the resulting magnetic field surrounds the wire (Figure 01-02). Figure 01-02: Deflection of a compass needle placed parallel to an electric-current carrying wire (blue = north; red = south). (a) no current in the black wire; (b) current flowing to the bottom; (c) current flowing to the top.