lens, the concave disk held by the ciliary muscles, found behind the opening of the pupil, can't miss it!
The pupil. It expands and contracts based on how much light is hitting it.
Retina which has rods and cones
The pupil is the part of the eye through which light passes.
The pupil goes larger in the dark, and smaller in the light.
the pupil =]
That would be the sphincter muscles in the eye that surround the pupil and contract in order to widen it and allow in as much light as possible.
gray commissure
clerestory
incident
The pupil is the part of the eye through which light passes.
The pupil goes larger in the dark, and smaller in the light.
pupil
the pupil =]
Pupil
The iris (technically the diaphragm) lets light from the lens enter the camera. The entire lens can let light fall on the film or sensor. But, much of the time it doesn't do that. An device called an iris makes the hole through which light passes larger and smaller. When all the way open it lets light from the entire lens reach the film or sensor, but it can make the hole smaller and only allow light from a part of the lens enter.
No, the visible part is called visible light. Ultraviolet is invisible to the human eye.
No, the visible part is called visible light. Ultraviolet is invisible to the human eye.
That part is called "visible light", or just "light".
No. A part of the total may get partially reflected.