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Enderle ch. 27 voc.

chapter 27 vocabulary

QuestionAnswer
in the particle model of electromagnetic radiation,a particle that only travels at the speed of light and whose energy is related to the frequency of the radiation in the wave model Photon
the distance light travels through a vacuum in one year Light Year
a wave that is partly electric and partly magnetic and carries energy. Emitted by vibrating electric charges Electromagnetic Wave
the range of electromagnetic waves extending from radio wave to gamma-rays. Electromagnetic Spectrum
electromagnetic waves of frequencies lower than the red end of visible light Infrared
electromagnetic waves of frequencies higher than those the violet end of visible light Ultraviolet
term applied to materials that allow light to pass through in straight lines. Transparent
term applied to materials that absorb light without reemission and consequently do not allow light to pass through Opaque
a thin beam of light Ray
a shaded region that light that results when light falls on an object and thus cannot reach into the region on the far side of the object Shadow
the darker part of the shadow where all the light is blocked Umbra
partial shadow that appears where light from part of the source is blocked and light from another part of the source is not blocked. Penumbra
the aligning of vibrations in a transverse wave, usually by filtering out waves of other directions. Polarization
Created by: tenderle14