Links

Optical Path Length   - Details
Wolfram Research

Optical Path   - Details
Wolfram Research

Optics Lecture Notes   - Details
Dr. R. Willingale, U of Leicester

Laser Information Resources   - Details
Sam's Laser FAQ

Optics Course   - Details
Univ of Florida middle school through college

Optics   - Details
U of London, course notes in PDF

Models in Optics   - Details
University of Edinburgh in PDF

Modern Optics   - Details
University of Edinburgh

Optics lecture course   - Details
University of Edinburgh

On-line Optics book   - Details
Göran Manneberg, The Royal Institute of Technology, Stockholm