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22 Cards in this Set
- Front
- Back
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The range of electromagnetic waves extending from radio waves to gamma rays
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Electromagnetic Spectrum (27.3)
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A wave that is partly electric and partly magnetic and carries energy. Emitted by vibrating electric charges.
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Electromagnetic Wave (27.3)
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Electromagnetic waves of frequencies lower than the red of visible light.
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Infrared (27.3)
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The distance light travels through a vacuum during one year.
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Light Year (27.2)
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Term applied to materials that absorb light without remission, and consequently do not allow light through them.
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Opaque (27.5)
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A partial shadow that appears where light from part of the source is blocked and light from another part of the source is not blocked.
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Penumbra (27.6)
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In the particle model of electromagnetic radiation, a particle that travels only at the speed of light and whose energy is related to the frequency of the radiation in the wave model.
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Photon (27.1)
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The aligning of vibrations in a transverse wave, usually by filtering out waves of other directions.
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Polarization (27.7)
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A thin beam of light.
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Ray (27.6)
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A shaded region that results when light falls on an object and thus cannot reach into the region on the far side of the object.
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Shadow (27.6)
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Term applied to materials that allow light to pass through them in straight lines.
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Transparent (27.4)
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Electromagnetic waves of frequencies higher than those of violet light.
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Ultraviolet (27.3)
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The darker part of a shadow where all the light is blocked.
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Umbra (27.6)
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Red, blue and green light. These colors when added together produce white light.
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Additive Primary Colors (28.5)
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Two colors of light beams that when added together appear white.
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Complementary Colors (28.6)
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Pattern of distinct lines of color, corresponding to particular wavelengths, that are seen in a spectroscope when a hot gas is viewed.
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Line Spectrum (28.11)
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A material that selectively absorbs colored light.
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Pigment (28.3)
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To absorb sound or light and reemit it in all directions.
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Scatter (28.8)
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An instrument used to separate the light from a hot gas or other light source into its constituent frequencies.
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Spectroscope (28.11)
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For sunlight and other white light, the spread of colors seen when the light is passed through a prism or diffraction grating. In general, the spread of radiation by frequency, so that each frequency appears at a different position.
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Spectrum (28.1)
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The colors of magenta, yellow, and cyan. These are the three colors most useful in color mixing by subtraction.
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Subtractive Primary Colors (28.7)
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Light such as sunlight that is a combination of all the colors. Under white light, white objects appear white and colored objects appear in their individual colors.
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White Light (28.1)
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