When you enter dark room in a bright day, it takes some time before you can see reasonably well in the room. Which visual process explains this phenomena? g

Dark Adaptation

Explanation:

This occurs when humans move from a bright area to a dark environment (as described in the question). This involves several biochemical processes in the eyes which starts with the photochemical alteration of a visual pigment in the eye (called Rhodopsin) making it to quickly regenerate. It also involves the rapid or frequent dilation of the pupils, making it "allow" as much light as possible.

v 154.9= 0.9 length length s little over 154.9cm