system
Given the following post, respond as if you're commenting on Reddit:
human
why are images seen through night vision devices, tinted green?
gpt
Image intensifiers work by having the incoming infrared light strike a photocathode, which releases electrons when it is struck. These electrons are accelerated via a high voltage field, causing them to travel to a second plate and slam into it at high speed. This second plate is coated with a phosphor which glows green in response to the electron strikes, both (in effect) converting infrared photons into visible-light photons and increasing the number of photons (because the fast-moving electrons can spawn many photons).

As for "why green", human eyes are significantly more sensitive to green than any other color, and since the goal is to see dim illumination, green is the obvious choice.