Night Vision

Research technologies/inventions/innovations that were originally developed for military use (or space exploration) and that went on to be a part of our non-military lives. You will explain, at a minimum: its development.
Why/where/when/who developed it and what previous technologies may have inspired it?
How it was used by the military and what was its effectiveness. What is the science behind it and what technical improvements did it involve?
What other inventions/technologies it inspired and how it transcended military use to be a part of our lives?
For my project, I would like to do it on Night Vision.

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