Module 12 Terms Flashcards
material that absorbs or reflects all light and does not transmit any light.
opaque
material that transmits and scatters light so that objects viewed through it appear blurry.
translucent
material that transmits light without scattering so that objects are clearly visible through it.
transparent
property of a material indicating how much the speed of light is reduced in the material compared to the speed of light in a vacuum.
index of refraction
image of a distant object produced by the refraction of light through air layers of different densities.
mirage
a transparent material that selectively transmits light.
filter
light-absorbing colored molecule, such as chlorophyll and carotenoid, in the thylakoid membranes of chloroplasts.
pigment
light produced by heating a piece of metal, usually tungsten, until it glows.
incandescent light
light generated by using phosphors to convert ultraviolet radiation to visible light.
fluorescent light
light of one wavelength that travels in one direction with a constant distance between the corresponding crests of the waves.
coherent light
light that can contain more than one wavelength, travel in more than one direction, and has varying distances between the corresponding crests of the waves.
incoherent light
light whose magnetic field vibrates in only one direction.
linear polarized light
technique that produces a complete three-dimensional photographic image of an object.
holography
the complete reflection of light at a boundary that occurs when light strikes at an angle greater than the critical angle, and light travels faster in the second medium than in the first medium.
total internal reflection
device that reads intensities of reflected light and converts the information to digital signals.
optical scanner
