http:www.glenbrook.k12.il.usgbssciphysmmediawavesem.html

1

• On microscopic level, refraction of light is due
  to
• Absorption of light by atoms
• Re-radiation (after time delay) of light.

Speed of wave depends on medium that light
propagates through.
http//www.glenbrook.k12.il.us/gbssci/phys/mmedia/
waves/em.html
2
Specular reflection Law of Reflection
http//www.glenbrook.k12.il.us/gbssci/phys/mmedia/
optics/lr.html
3

• Generally, as light interacts at an interface
  between two medium, there is
• a reflected wave
• a refracted wave

Animation of reflection/ refraction of light at a
boundary
http//www.phy.ntnu.edu.tw/ntnujava/index.php?topi
c16