13. Reflection & Refraction

In most textbooks, Reflection and Refraction are taught as independent topics. However, in this question, it is implied to students that both processes can happen at the same time. 

To the teacher, it is useful to learn about Fresnel Equations that give rise to both processes happening at the glass-air interface.

Here is an experiment that I have done using a laser pointer:

More information can be found here:
https://en.wikipedia.org/wiki/Fresnel_equations
http://www.ece.rice.edu/~daniel/262/pdf/lecture13.pdf