43 Learning Materials
Textbook Material to Read
Read
Chapter 25
25.4 Total Internal Reflection
25.5 Dispersion: The Rainbow and Prisms
Chapter 26
Main Ideas
Geometric optics is the part of optics dealing with the ray aspect of light.
Speed of light in vacuum
Reflection and the Law of Reflection
The angle of reflection equals the angle of incidence.
Refraction
The changing of a light ray’s direction (loosely called bending) when it passes through variations in matter is called refraction.
Index of Refraction
Dispersion
Dispersion is defined to be the spreading of white light into its full spectrum of wavelengths.
Image credit: public domain. https://commons.wikimedia.org/wiki/File:Light_dispersion_conceptual_waves.gif
Additional Resources
OpenStax High School Physics, chapter 16 Mirrors and Lenses
ray means a straight line