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"
Seemingly innocent questions like this gave rise to Quantum Mechanics. It turns out that light explores ALL paths between the source and the observer. And they all cancel out except
http://wiki.answers.com/Q/Why_does_light_travel_in...
Light explores all paths between locations, and the path of least resistance is chosen,
http://www.chacha.com/question/why-does-light-trav...
Light comes from the sun using particles called photons. It would seem that they line up in the form of an electromagnetic wave and propergate across space radially but in straight
https://uk.answers.yahoo.com/question/index?qid=20...
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
http://answers.yahoo.com/question/index?qid=200805...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com