China Naming Network - Weather knowledge - What is the big round mirror installed at the corner of the road made of?
What is the big round mirror installed at the corner of the road made of?
Not a convex lens, but a convex lens refraction.
It should be a convex mirror, also called convex mirror, which is made of reflective substances such as silver plating or aluminum plating on one side of curved glass. Convex mirror is a reduced virtual image, which can broaden the field of vision, make it easier to see the opposite vehicle and ensure safety.