Question

What three reasons, and solutions, for the field of view being almost too dark see the image, but one can see light from the lamp?

Answer 1

There aren't three reasons for why can we see lamp light inspite of it being too dark to see any other image. However , a human eye has two types of cell for the visionary perception these are known as cone cell and the rod cells . The cone cells are responsible for color perception and support day time vision , the rod cells on the other hand produce a chemical substance known as rhodopsin. Rhodopsin is an extremely photosensitive substance and can be activated on minimal light frequencies ,unlike cone cells rod cell support night time vision. Further the number of rod cells inside a human eye is far more exceeding over the number of cone cells.So the light emitted from the lamp reaches our eyes it tends to activate cone cells which enables us to see the light from the lamp , however the mechanism through which we distinctly percieve light from lamp is not merely visionary perception but the color perception imparted by the cone cells , werelse rod cells lack this ability so even though we have got visionary perception in dark it lacks the ability to distinctly differenciate between things that do not emit or reflect light.