Make a whole rainbow by mixing red, green, and blue light. Change the wavelength of a monochromatic beam or filter white light. View the light as a solid beam, or see the individual photons.

An interactive simulation that teaches about photons, monochromatic light, white light, and rainbows through changing wavelengths, beams, filters, and color combinations. This simulation can either be downloaded or played online and includes handouts, lesson plans, and additional materials.

Psychology is designed to meet scope and sequence requirements for the single-semester introduction to psychology course. The book offers a comprehensive treatment of core concepts, grounded in both classic studies and current and emerging research. The text also includes coverage of the DSM-5 in examinations of psychological disorders. Psychology incorporates discussions that reflect the diversity within the discipline, as well as the diversity of cultures and communities across the globe.Senior Contributing AuthorsRose M. Spielman, Formerly of Quinnipiac UniversityContributing AuthorsKathryn Dumper, Bainbridge State CollegeWilliam Jenkins, Mercer UniversityArlene Lacombe, Saint Joseph's UniversityMarilyn Lovett, Livingstone CollegeMarion Perlmutter, University of Michigan

By the end of this section, you will be able to:

Describe the basic anatomy of the visual system
Discuss how rods and cones contribute to different aspects of vision
Describe how monocular and binocular cues are used in the perception of depth

Video shows how color vision works by following a beam of sunlight as it bounces off a beach ball and enters a human eye. But our eyes are just the beginning the real star of the story is the brain. [5:30]