Analog Image intensifier tube
- Residual lightStarlight and moonlight, too faint for the eye.
- PhotocathodeTurns the light into electrons.
- Microchannel plateMultiplies the electrons thousands of times.
- Phosphor screenTurns them back into a green image.
- EyeSees light, and only light.
The image exists only as light inside the tube. Nothing can be added to it, stored or shared.







