describe with an experiment that light travel in a straight line
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Two experiments are used to demonstrate how light travels in straight lines. In the first example, the presenter arranges three pieces of card, with holes in, in an uneven line. The light stops and cannot travel through all three cards. When she arranges the holes in a straight line, the light can travel through.
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If u take a laser and point it normally on a plane mirror,u won't see the reflected ray as it is reflected straight back. This proves that light moves in a straight line
If u take a laser and point it normally on a plane mirror,u won't see the reflected ray as it is reflected straight back. This proves that light moves in a straight line
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