Question

luminous objects such as flashlights emit light that we can see. how do we see an object that isnt luminous?

Answer 1

In order for us to see an object that is non-luminous, it must reflect some of the light it receives from a luminous source, such as the Sun. Most of the objects we see, such as cars, clouds or even the Moon, are not luminous; it is just that they reflect sunlight