Question

You know that we can see because light is reflected from the object and come to our eye.But what happens in night vision cameras there is no light that could be reflected by object???

Answer 1

Night vision goggles boost a dim, dark scene in a series of simple steps: Dim light from a night scene enters the lens at the front. The light is made of photons (particles of light) of all colors. As the photons enter the goggles, they strike a light-sensitive surface called a photocathode.