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Module 16: Reflection and Refraction

Horizontales
In an optical device using compound lenses, the lens closest to the object observed.
The colored part of the eye that surrounds the black opening through which light passes; regulates the amount of light entering the eye.
A diagram showing rays that can be drawn to determine the size and location of an image formed by a mirror or lens.
Term applied to a person who has trouble focusing on nearby objects because the eyeball is so short that images form behind the retina.
A lens that is thickest in the middle, causing parallel rays of light to converge to a focus.
An image formed through reflection or refraction that can be seen by an observer but cannot be projected on a screen because light from the object does not actually come to a focus.
For a converging lens, the point at which a beam of light parallel to the principal axis converges. For a diverging lens, the point from which such a beam appears to come.
The layer of light-sensitive tissue at the back of the eye.
A defect of the eye caused when the cornea is curved more in one direction than in another.
Lens of a telescope closest to the eye; enlarges the real image formed by the lens.
Verticales
A lens that is thinnest in the middle and that causes parallel rays of light to diverge.
The distance between the center of a lens and either focal point.
Term applied to a person who can clearly see nearby objects but not clearly see distant objects.
The opening in the eyeball through which light passes.
A plane passing through either focal point of a lens that is perpendicular to the principal axis.
The line joining the centers of curvature of the surfaces of a lens.
The transparent covering over the eyeball.
A piece of glass that can bend parallel rays of light so that they cross, or appear to cross, at a single point.
Distortion in an image produced by a lens.
An image that is formed by converging light rays and that can be displayed on a screen.