PLMGSS-ACE Li ShiYu's Science Blog

Monday, March 1, 2010

[[A little bit about light......]]

LIGHT

The nature of light is that it only travels in straight line called light rays and cannot bend.
White light in produce when 7 colours ( red, orange, yellow, green, blue, indigo and violet) are blended together; as such the same thing goes to that white light can separate into 7 different colours.
There are three broad categories of light beams:
1. Parallel beam ( Light rays are parallel to each other )
2. Convergent beam ( Light rays are focused at point )
3. Divergent beam ( Light rays spread out from a point source )

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