Why Does Light Travel in Straight Lines?

Answer

Light travels in a straight line because this is the path of least resistance. This allows light to travel in a path that will make it travel in the shortest time. This idea was first postulated by Eculid in the year 300BC.
Q&A Related to "Why Does Light Travel in Straight Lines"
Light travels in a straight line 'cus the sun is the main source of light energy. light energy also travels in waves. light energy does not need a medium to travel. this means that
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Light explores all paths between locations, and the path of least resistance is chosen,
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Light takes the path of least time according to Fermat's Principle of Least Time. Fermat's Principle: Light follows the path of least time. The law of reflection can be derived from
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Light DOES always travel in a straight line. It is true that close to a massive object the light may 'appear' to bend, but this is simply because mass bends space - a straight line
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