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Optics Review

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  • Diamonds sparkle because of ...
    Total internal reflection
  • Name one example of diffuse reflection
    Objects we see in everyday life, crumpled up aluminum foil, etc.
  • What does it mean to diverge?
    To come apart in different directions
  • The angle of incidence and the angle of reflection are always ________?
    Equal
  • Light is ?
    an electromagnetic wave that moves in a straight line
  • Refraction and Reflection never happen at the same time. True or false?
    False
  • Name one example of specular reflection
    Light shined at a clean flat mirror; The sky reflected off a calm lake
  • Name one source of light from a natural source
    ???
  • Glow-in-the-dark stuff is an example of what source of light?
    Phosphorescence
  • A crime-scene investigator shines a UV light around a room, and sees a splotch of light on the ground. What is this effect called?
    Fluorescence
  • The ratio of light speed in a vacuum to light speed in a medium is called?
    The index of refraction
  • When light speeds up, it bends towards the normal. True or false?
    False
  • The light from glowsticks is an example of?
    Chemiluminescence
  • What speed does light travel at in a vacuum?
    3*10^8 m / s
  • Is the index of refraction of diamond high or low?
    High
  • What 3 rays do we draw when we draw a ray diagram for a convex mirror?
    Towards the focus, towards the center of curvature, and parallel to the principal axis.
  • What does it mean to "converge"
    to come together at a single point
  • Bioluminescence is?
    light produced from chemical reactions in living organisms
  • What kind of image will a concave mirror produce when an object is placed at F?
    No image.
  • Two quartz crystals are rubbed together and produce some light. What is this called?
    Triboluminescence
  • When speaking of sources of light, a mirror is what kind of source of light?
    Non-luminous
  • Is incandescent light hot or cold?
    Hot
  • What kind of an image will a converging mirror produce when an object is placed between F and the mirror?
    Larger, upright, behind the mirror, virtual
  • What kind of image will a diverging mirror produce?
    Smaller, upright, behind the mirror, virtual