photocathode उदाहरण वाक्य

उदाहरण वाक्य

1. Photons from a dimly lit source enter the objective lens ( on the left ) and strike the photocathode ( gray plate ).
2. The photocathode ( which is negatively biased ) releases electrons which are accelerated to the higher-voltage microchannel plate ( red ).
3. First, an automatic gated power supply system regulates the photocathode voltage, allowing the NVD to instantaneously adapt to changing light conditions.
4. Ultraviolet can be detected by suitable photodiodes and photocathodes, which can be tailored to be sensitive to different parts of the UV spectrum.
5. The process of reversing the control voltage at the photocathode is called " gating " and therefore ICCDs are also called gateable CCD cameras.
6. In the example, the photocathode is held at a negative high voltage of order 1000V, while the anode is very close to ground potential.
7. These are often called " photocathodes " and are used in phototubes used in scientific instruments and image intensifier tubes used in night vision goggles.
8. Third generation night vision systems maintain the MCP from Gen II, but now use a photocathode made with gallium arsenide, which further improves image resolution.
9. The effectiveness of a photocathode is commonly expressed as quantum efficiency, that being the ratio of emitted electrons vs . impinging quanta ( of light ).
10. It uses magnetic and electric fields operating in a vacuum to focus the electrons released from a photocathode by incoming light onto a collection of silicon diodes.