Fu-Kwun Hwang, National Taiwan University Department of Physics.

http://www.phy.ntnu.edu.tw/java/
light/flashLight.html

A simulation that interactively displays the phenomena seen when shining a flashlight or laser pointer up at the surface from underwater. Angle and type of surface are controllable.

Fu-Kwun Hwang, National Taiwan University Department of Physics.

http://www.phy.ntnu.edu.tw/java/
billiards/billiards.html

A simulation that interactively displays the behavior of a spin-free pool ball interacting with the bumpers of a pool table and other balls, following the law of reflection. No betting, please.

Fu-Kwun Hwang, National Taiwan University Department of Physics.

http://www.phy.ntnu.edu.tw/
java/Lens/lens_e.html

A simulation that interactively displays the relationships between object and image distances and orientations for a mirror and a thins lens. I get best JAVA performance on my Mac with Internet Explorer rather than Netscape.

A High School Physicstutorial from The Physics Classroom, Glenbrook HS Physics.

http://www.glenbrook.k12.il.us/gbssci/
phys/Class/refln/u13l1c.html

A complete online tutorial with simulations on refelction and the ray model of light. Starts with definition of line of sight and rays, moves through reflection to image production by mirrors.

Fu-Kwun Hwang, National Taiwan University Department of Physics.

http://www.phy.ntnu.edu.tw/java/
optics/prism_e.html

A simulation that interactively displays the path and relative intensities of a ray of light beamed into a prism from various positions. The shape of the prism and the index of refraction can also be controlled.