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Champion, MacGougan

Key Terms for Light

normal allowing light to pass through
radiates the emission of visible light by a hot object
phosphorescence to send out energy in the form of waves or rays
refraction the emission of light produced by chemical reactions inside the bodies of living creatures
non-luminous the likeness of an object
flourescence giving off its own light
opaque a single line or narrow beam of light that originates from a light source and that may bounce off a surface that it strikes
angle of reflection the transfer of radiant energy; such as light
transparent the light that is cast back from a reflecting surface
bioluminescence a flat or level surface
laws of reflection energy transferred or emitted as waves or rays in all directions
angle of refraction an object that can be heated to such a high temperature that it emits visible light
luminous a mirror having a flat surface
plane a substance that does not give off its own light
incandescence representation of the path of light by using a straight line with an arrow
natural light source the angle between the normal and the refracted rays
translucent the process in which high energy, invisible ultraviolet light is absorbed by the particles of an object
radiation the light that strikes a reflecting or refracting material
plane mirror the angle between the incident ray and the normal
incandescent source the persistent emission of light following exposure to and removal of a source of radiation
ray not allowing any light to pass through
image a reference line drawn perpendicular to a reflecting surface at the point where an incident ray strikes the surface
angle of incidence the angle between the normal and the reflected rays
radiant energy the bending of light when it travels from one material to another
chemiluminescence a non-human-mande source of light, such as the sun
incicdent ray allowing some light to pass through.
light the casting back of light from a surface
ray diagram The two laws that state the the angle of reflection is equal to the angle of incidence and the incident ray, the normal and reflected rays are always in the same plane.
artificial light source the form of energy we can see
reflected ray a human made source of light
reflection the emission of light resulting from chemical action and not involving heat

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