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Natural Light Source
non-human made source of light, ex. sun, fire, stars, sparks, jellyfish, lightning
Chemical reactions inside living things bodies provide energy for light Chemical reactions inside body - energy for light
Ray Model of Light
a model that represents light as a straight line, or ray, indicating the path of a beam of light.
a representation of the path of light based on the observations that light travels in straight lines
a mirror with a surface that curves outward like a helium-filled party balloon ex. stores and buses to see a wider picture http://farm2.static.flickr.com/1272/1176679797_5163378be4.jpg
a mirror with a surface that curves inward like the inside of a shiny bowl ex. make-up mirrors, side-view mirrors on cars to enlarge an image http://farm3.static.flickr.com/2117/2287441388_b21fb74878.jpg
the bending of light when it travels from 1 medium to another http://farm4.static.flickr.com/3525/3203435803_35157186c3.jpg
image falls behind the retina (eye has a shorter shape than a normal eye) a convex lens allows image to fall on the retina - shortens rays
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