Concepts Covered: Propagation of Light: Determination of the Speed of Light Visible and Infrared Spectrum: White Light Dispersed on a Spectrum Recorder Inverse Square Law: Light Intensity at Increasing Distances Refraction/Total Internal Reflection: Light Incident on a Water-Air Interface Refraction/Schlieren Image: Variations in the Index of Refraction of Air Refraction: Simulation of Atmospheric Refraction Rayleigh Scattering: Blue Sky and Sunset Simulation Laser Theory: High Power CO2 Laser