Cathode Ray tubes allow a manipulation of a spud of super super send let outd particles
*CRT - consist of evacuated glass tube containing ii electrodes
*High voltage is applied across electrodes - stream of negatively charged particles from cathode to anode
*Structures built around the cathode (e.g.
galvanic plates and magnetic coils) notify be used to manipulate CR
Charge particles produce an electric content
* galvanizing field exists in any region that an electrically charged object experiences a force
*A charge in an electric field experiences a force F = Eq
Oppositely charged replicate plates
* electric field moves uniformly from positive to negative
*For oppositely charged plates - E = V/d
posture acting on a charge moving by dint of a magnetic field
*Charges moving through a magnetic field produces a force
*F = qvbSin+
*Force greatest when particle is perpendicular to electrical field
Thompsons experiment to vizor charge/Mass ratio
*Subjected cathode ray to deflection by write out electric and magnetic fields - set at sort out angles to each other
*Arranged magnetic and electrical forces to balance out forces acting out of CR
*-ve particles from cathode move through a collimating anode - compositors case CR into thin beam
*A known magnetic field was applied, and the electrical field, once applied, was adjusted to until returned to O
Fb = Fe
qvB = qE
v = E/B - which finds swiftness of particle
Then
Fb = Fc
qvb = mv2/r
q/m = V/Br
Outline role of Cathode ray in
*Electron gun
oConsists of
XA thermionic cathode - ejects electrodes when heated
XA anode - collimator to subject beam to a thin stream
XGrids to control brightness
*Electric field or deflection system
oHelps to deflect CR for different uses
oConsists of two parallel plates - one horizontal the other vertical
* fluorescent screen
oEnd of the CRT coated with fluorescent...
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