ideas to implementation

Больше похоже на это

Ionic Compounds

от Hernan Scott

How does Netflix affect American Culture?

от Azurim Galindo

Digital Design 1

от shatha grant

My Language Print

от Jacqueline Wong

ideas to implementation

Superconductor

Conduction and resistance

Resistance

Conduction

Bragg

outline the methods used by the Braggs to determine crystal structure

Semiconductor

Production of electrons with light - solar cells

Electron Tube - TV

Applications

•outline the role of:

◦electrodes in the electron gun

◦the deflection plates or coils

◦the fluorescent screen

in the cathode ray tube of conventional TV displays and oscilloscopes

fluorescent screen

Makes light when hit with electrons

Colour TV has clusters of three phosphors for observation at a distance

CrO

Single colour green or blue to read at close distance

Deflection

Old Televisions

External Coils, Cheaper but designed to "RASTER"

Internal E field Plates, Expensive, but highly sensitive for science

Electron gun and Plates

Old Television

Three guns for three colours, and designed to switch current pixel to pixel

CRO

Single gun, with focus designed for steady intensity.

E B balance e/m

F = Eq...........................................(1)

F =qvB..........................................(2)

F=mv^2/r (with no electric field).......(3)

also E= V/d

(1) = (2) gives v

(2) = (3) + v + r measured gives e/m

or (1) = (2) = (3) gives q/m = E/rB^2

Cathode Rays - Particle

Discharge tubes