Editing Cathode-ray tube (section)

====Electrostatic deflection====
{{Main|Electrostatic deflection}}
Mostly used in oscilloscopes. Deflection is carried out by applying a voltage across two pairs of plates, one for horizontal, and the other for vertical deflection. The electron beam is steered by varying the voltage difference across plates in a pair; For example, applying a voltage to the upper plate of the vertical deflection pair, while keeping the voltage in the bottom plate at 0 volts, will cause the electron beam to be deflected towards the upper part of the screen; increasing the voltage in the upper plate while keeping the bottom plate at 0 will cause the electron beam to be deflected to a higher point in the screen (will cause the beam to be deflected at a higher deflection angle). The same applies with the horizontal deflection plates. Increasing the length and proximity between plates in a pair can also increase the deflection angle.<ref>{{cite web | first=Kirt |last=Blattenberger | title=Navy Electricity and Electronics Training Series (NEETS), Module 16 | website=RF Cafe | url=https://www.rfcafe.com/references/electrical/NEETS-Modules/NEETS-Module-16-6-1-6-10.htm | access-date=2020-12-11}} <!--appears to be a US military source--></ref>