Cathode ray tube

Cathode ray tube

T540/0149 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 50.2MB

Downloadable file size: 4.6MB

Price image Pricing

Please login to use the price calculator

This image is part of the sequence science and technology: deflection of a beam of electrons by a magnetic field


Caption: Cathode ray tube. Image 2 of 2. Demonstration showing how a beam of electrons can be deflected by a magnetic field, as seen in television cathode ray tube (CRT) displays. Here, electricity from the wires (left) is heating a cathode to produce a beam (blue) of electrons (also called a cathode ray), which is seen by the ionisation of the gas around it. Helmholtz coils (round) surround the glass tube and are providing the magnetic field to deflect the electron beam. This deflection of an electron beam is used to move the beam to create the images seen on a television CRT screen. See image T540/148 for this electron beam being used to produce green fluorescent light from the phosphor-coated area at right.

Release details: Model release not required. Property release not required.

Keywords: after, apparatus, atomic physics, beam, cathode ray, cathode ray tube, classroom, coil, coils, crookes tube, crt, current, deflected, deflection, demonstrating, demonstration, display, display technology, education, educational, electric, electrical, electrical engineering, electromagnetism, electron beam, electronic, electronics, engineering, equipment, experiment, experimental, experimenting, fluorescence, helmholtz coil, laboratory, learning, magnet, magnetic, magnetism, magnets, model, one, phosphor, physical, physics, ray, rays, school, screen, sequence, single, solenoid, solenoids, technological, technology, television, thermionic emission, tv

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.