Chapter 13: Light

Holography

Holography

________: a technique that produces a hologram- a complete three- dimensional photographic image of an object.

Mirages

________ result when the air at ground level is much warmer or cooler than the air above it.

Transparent

________: transmit almost all the light striking them, so you can see objects clearly through them.

Mirage

________: an image of a distant object produced by the refraction of light through air layers of different densities.

Total internal reflection

________ makes light transmission in optical fibers possible.

optical scanner

A(n) ________ is a device that reads intensities of reflected light and converts the information to digital signals.

Refraction

________ causes a prism to separate a beam of white light into different colors.

Pigment

________: a colored material that is used to change the color of other substances.

Color blindness

________ is an inherited sex- linked condition in which certain cones do not function properly.

Incandescent light

________: generated by heating a piece of metal until it glows.

White light

________ is produced when the three primary col- ors of light are mixed.

sodium vapor lamp

Inside a(n) ________ is a tube that contains a mixture of neon gas, a small amount of argon gas, and a small amount of sodium metal.

light wave

A(n) ________ is bent away from the normal as it passes from water to air.

Refraction

________ is caused by a change in the speed of a wave when it passes from one material to another.

laser light

Illuminating objects with ________ produces holograms.

Total Internal Reflection

________: occurs when light traveling from one medium to another is completely reflected at the boundary between the two materials.

Optical fibers

________ also are used to explore the inside of the human body.

Opaque

only absorbs and reflects light-no light passes through it

Translucent

allow some light to pass through them

Transparent

transmit almost all the light striking them, so you can see objects clearly through them

Index of Refraction

a property of the material that indicates how much the speed of light in the material is reduced

Incandescent light

generated by heating a piece of metal until it glows

Fluorescent Light

uses phosphors to convert ultraviolet radiation to visible light

Coherent Light

light of only one wavelength that travels with its crests and troughs aligned

Incoherent Light

can contain more than one wavelength, and its electromagnetic waves are not aligned

Polarized Light

the waves vibrate in only one direction