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

1
Specular reflection Law of Reflection
http//www.glenbrook.k12.il.us/gbssci/phys/mmedia/
optics/lr.html
2
How do we understand what happens to waves at a
boundary? Break-up the problem into smaller parts
that we understand.

• Dropping a stone into water produces circular
  propagating waves
• Imaging dividing a wavefront of a wave into many
  different circular waves

Applet illustrating reflection/ refraction using
Hyugens principle
http//physics.uwstout.edu/physapplets/a-city/phys
engl/huygensengl.htm
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