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Refraction and Lenses

Across
The separation of white light into a spectrum of colors by such means as a glass prism or water droplets in the atmosphere
A condition in which the focal length of the eye is too long, and images are formed past the retina.
Relates the focal length of a spherical thin lens to the object position and the image position; states that the inverse of the focal length of a spherical lens is equal to the sum of the inverses of the image position and the object position.
A piece of transparent material, such as glass or plastic, that is used to focus light and form an image
Down
A diverging lens, thinner at its middle than at its edges, that spreads out light rays passing through it when surrounded by material with a lower index of refraction; produces a smaller, virtual, upright image.
A converging lens, thicker at its center than at its edges, that refracts parallel light rays so the rays meet at a point when surrounded by material with a lower index of refraction; can produce a smaller, inverted, real image, or a larger, upright, virtual image.
A combination of two or more lenses with different indices of refraction (such as a concave lens and a convex lens) that is used to minimize a chromatic aberration.
A condition in which the focal length of the eye is too short to focus light on the retina.
The certain angle of incidence in which the refracted light ray lies along the boundary between two media