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Light & Optical Systems

Champion, MacGougan & Reid

Key Terms for Light & Optical Systems Topics 1 - 3

2 3   4 5
  6           7                          
9                                     10             11    
        12                 13              
    23   24        
  25 26                                      

6.not allowing any light to pass through
7.the light that is cast back from a reflecting surface
9.the angle between the normal and the reflected rays
10.the casting back of light from a surface
12.the emission of light resulting from chemical action and not involving heat
14.representation of the path of light by using a straight line with an arrow
16.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.
17.a non-human-mande source of light, such as the sun
20.the process in which high energy, invisible ultraviolet light is absorbed by the particles of an object
22.the persistent emission of light following exposure to and removal of a source of radiation
24.the likeness of an object
26.the angle between the normal and the refracted rays
28.the transfer of radiant energy; such as light
29.energy transferred or emitted as waves or rays in all directions
30.the emission of visible light by a hot object
31.allowing some light to pass through.
1.a mirror having a flat surface
2.giving off its own light
3.a substance that does not give off its own light
4.a human made source of light
5.a flat or level surface
8.the angle between the incident ray and the normal
11.the light that strikes a reflecting or refracting material
13.a reference line drawn perpendicular to a reflecting surface at the point where an incident ray strikes the surface
15.an object that can be heated to such a high temperature that it emits visible light
18.the emission of light produced by chemical reactions inside the bodies of living creatures
19.the bending of light when it travels from one material to another
21.allowing light to pass through
23.a single line or narrow beam of light that originates from a light source and that may bounce off a surface that it strikes
25.to send out energy in the form of waves or rays
27.the form of energy we can see

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