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40 Cards in this Set
- Front
- Back
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Transvrse waves that transfer energy by radiation.
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ELECTROMAGNETIC RADIATION
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A tiny particlelike bundle of radiation.
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PHOTON
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Electromagnetic waves that have long wavelengths.
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RADIO WAVE
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Process of adding voice, music, video, computer information, or other data to radio waves by using electrical currents to vary either amplitude or frequency.
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MODULATION
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Radio waves with the highest frequency and energy.
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MICROWAVES
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Electromagnetic waves that have a wavelength slighty longer than visible light.
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INFRARED RADIATION
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Electromagnetic waves in the only part of the electromagnetic spectrum we can see light.
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VISIBLE RADIATION
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Electromagnetic waves that have a higher frequency than visible light
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ULTRAVIOLET RADIATION
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Electromagnetic waves having a wavelength shorter than ultraviolet radiation.
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X RAY
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High-frequency electromagnetic waves that travel at the speed of light, have no mass or charge, and are the most penetrating form of radiation.
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GAMMA RAY
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materials you can't see through because tehy absorb or reflect all light.
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OPAQUE MATERIALS
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Mareials that can be clearly seen through because they allow light to pass through them.
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TRANSPARENT MATERIALS
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Materials that can be hazily seen through because they allow some light to pass through them, but not enough for a clear image.
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TRANSLUCENT MATERIALS
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Color material that absorbs some colors and reflects others.
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PIGMENT
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Light produced by a thin tungstenwire, or filament, that is heated in an incandescent bulb until it glows.
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INCANDESCENT LIGHT
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Light produced when ultraviolet radiation inside a flourescent light bulb causes its flourescent coating to glow.
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FLOURESCENT LIGHT
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occurs when a wave strikes an object and bounces off.
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REFLECTION
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The bending of waves, caused bt changing their speed.
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REFRACTION
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The bending of waves around a barrier.
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DIFFRACTION
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A peice of glasses or plastic with many parrallel slits that acts like a prisim, causing white light that passes through it to separate into its component colors.
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DIFFRACTION GRATING
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A mirror with flat surface that produces a virtual image.
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PLANE MIRROR
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An image formed of diverging light through rays, as in a plane or convex mirror, or seen through a concave lens.
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VIRTUAL IMAGE
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A mirror whose surface curves inward.
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CONCAVE MIRROR
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A point on the optical axis of a concave mirror or convex lens where the light rays come together.
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FOCAL POINT
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The distance from the center of the lens or mirror to its local piont.
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FOCAL LENGHT
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An image produced where light rays converge, as with a concave mirror or convex lens.
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REAL IMAGE
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A mirror with a surface that curves outward.
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CONVEX MIRROR
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Lenses that are thicker in the middle than at the edges.
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CONVEX LENSES
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Lenses that are thinner in the middle and thicker at the edges and thus curve inward.
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CONCAVE LENSES
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An optical instructment that uses two convex lenses to magnifying distant objects.
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REFRACTING TELESCOPE
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aN optical instrument that uses a concave mirror, a plane mirror, and a convex lens to magnify distant objects.
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REFLECTING TELESCOPE
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aN optical instrument that uses two convex lenses with relatively short focal lengths to magnifying small, close-up objects.
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MICROSCOPES
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A lens with a short focal length that produces a relatively small image of an object, but includes much of the object's surroundings.
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WIDE-ANGLE LENS
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A lens having a long focal length and producing an enlarged, close-up image of an object.
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TELEPHOTO LENS
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light in which the transverse waves vibrate only along one plane.
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POLARIZED LIGHT
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A devise that emits a beam of photons that travel in the same direction and phrase, producing a beam of coherent light.
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LASER
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A beam of light in which all the electromagnetic waves ravel with the crests and troughs aligned.
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COHERENT LIGHT
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Light rays that are nearly parallel but spread out because their selectromagnetic waves do not travel in the same direction.
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INCOHERENT LIGHT
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Occurs when all the lights striking the surface between two materials is reflected totaly back into the first material.
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TOTAL INTERNAL REFLECTION
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Transparent glass fiber that can transmit light from one place to another.
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OPTICAL FIBER
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