Tuesday, March 14, 2006

How does light travels?

How does light travels?

Light travels in straight lines.

Ray of light
Ray of light is a thin of light. A ray of light can be produced using a ray box. Rays of light travels in straight line. this can easily observed by looking at a ray of light from a ray box. A ray of light is represented in diagrams by a straight line with an arrow to represent the direction of movement.

Beam of light
Beam of light is a stream of light. A torch produces beams of light. Beams are represented in diagrams by a bundle of rays.


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