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Look around you and notice the objects you can see. How is it that you are able to see these objects?
  • The objects emit light and the light reaches us.
  • There is light in the room and objects reflects this light and the light reaches us.
  • Objects either emit their own light, or reflect the surrounding light. This light reaches us.
  • We see objects because we direct our eyes towards them and the eye scans for materials.