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Light Energy

TermDefinition
light ray a straight-line beam of light as it travels outward from its source
law of reflection the angle between an incoming light ray and a surface equals the angle between the reflected light ray and the surface
opaque completely blocking light from passing through it
transparent letting all light through, so that objects on the other side can be seen clearly
translucent letting only some light through, so that objects on the other side appear blurry
polarization allowing light vibrations to pass through in only one direction
refraction the bending of light rays as they pass from one substance into another
concave lens a lens that is thicker at the edges than at the middle; as it curves inward, it spreads light rays apart, making images appear smaller
convex lens a lens that is thicker at the middle than at the edges; as it curves outward, it brings light together, making images appear larger
prism a cut piece of clear glass (or plastic) with two opposite sides in the shape of a triangle or other geometric shape
spectrum a band of colors produced when light goes through a prism
primary color red, green, or blue; mixing these colors can produce all the colors of the spectrum
primary pigment magenta, cyan, or yellow; materials with any of these colors absorb one primary color of light and reflect the other two
electromagnetism the production of magnetism by electricity (and the production of electricity by magnets)
electromagnetic spectrum all the wavelengths of visible and invisible light in order, from short(gamma rays) to long(radio)
laser a device that produces a thin stream of light of just a few close wavelengths
Created by: dionnej
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