Download Unit C: Light and Optical Illusions

Unit C: Light and Optical Illusions
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5. Process in which a substance emits light
after it has absorbed ultraviolet light
11. A diagram that traces the path that light
takes in order for a person to view a point on
the image of an object
13. Describes objects that produce light
1. The part that changes the size of a camera's
aperture
2. Describes materials that allow some light to
pass through
3. Form of artificial light; uses ultraviolet light
waves to make coating inside an opaque tube
glow white
17. An optical instrument with a lens for each
eye, used for viewing distant objects
19. The number of pixels per unit are in a
digital image
20. System that detects reflected microwaves
21. Process of creating an mage using a
computer
22. Angle between the reflected ray and the
normal
23. Opening in the eye that lets in light
25. A telescope that uses a converging lens to
collect light
27. Reflection that happens when parallel rays
hit a rough surface
28. Eyes that are made up of many smaller
units
30. Colours of visible light
32. All forms of radiant energy
39. Describes objects that do not produce light
but may reflect it
40. Flat mirror
41. Angle between the incident ray and the
normal
45. Curved piece of glass or other transparent
material that refracts light in a predictable
way.
46. Material that is sensitive to light
48. The measurable amount of a property,
50. Yellow, cyan, and magenta: colours made
adding any two primary colours of light
51. An optical instrument designed to make
distant objects appear nearer
53. Special lining on the back of the eye
54. The ability of certain organisms to
produce light by a chemical reaction.
55. Hole or opening in a camera that lets in
light
56. Reflecting surface that bulges out like the
back of a spoon
4. Theory that explains what happens when
coloured lights are mixed together.
6. Device that converts light into electrical
energy
7. Nerve that leads from the retina to the brain
8. Describes animals that are active at night
9. Decribes materials that do not allow light to
pass through.
10. Short for picture element
12. Model used to explain the characteristics
and behavior of light energy
14. Unit of a compound eye
15. Reflection that happens when parallel ray
hits a smooth surface
16. Image formed when rays meet at a point
18. Piece of transparent material that is
thinner in the middle than at the edges
24. Band of muscle around in the eye that
controls the size of the pupil and the amount
of light entering the eye.
26. refers to the whole range of wavelengths
of visible and invisible electromagnetic
radiation
29. An optical instrument used to view tiny
objects
31. A telescope in which a mirror is used to
collect and focus light
33. Any technology that uses light
34. Eyes that are round and have a cornea, a
lens and a retina
35. Reflecting surface that is curved inward
like the middle inside of a bowl or spoon.
36. Line perpendicular to a surface (that is,
forms 90 degree angle with the surface
37. Red, green, and blue light: adding these
three olours of light produces white light.
38. Light-produced organ found in
bioluminescence organisms
42. Part that acts like a door to control the
amount of light entering a camera
58. Piece of transparent material that is thicker
in the middle than at the edges
59. Bending of light as it travels from one
material to another material
43. Form of artificial light; uses electrical
energy to heat a thin wire thread that glows
white hot
44. Specialized cells in the retina that detect
colour
47. Describes materials that allow light to pass
through with little or no reflection
49. Light-sensitive cells found in the retina of
the eye
52. Ray of light that arrives at a mirror or
other substance
57. Specialized cells in the retina that are
sensitive to low levels of light