Light and Optics

We learned about light and optics this week and understand that light also bends.  The key idea is that light follows the path of least time.  The path of least time is traveling from one medium to another and the path is bent.  This bent path is known as refraction.  When light passes through a medium and changes its path it undergoes refraction.  For every object that light projects at there is a reflection ray that follows as well. To measure the refraction of light we use Snells Law: n1(sin1)=n2(sin2).  N1 stands for the initial material from index of refraction.  Sin1 stands for the measured angle from the initial ray.  N2 stands for the index of refraction for the 2nd material.  Finally sin2 stands for the measure of angle from the refracted ray.