1. Lenses, Prisms, & Polarization

2. What is a lens? A transparent object that refracts light ray
Converge or diverge to create an image
Ex: camera, microscope, eyeglasses, eyes

3. Lenses & Refraction
Light traveling through a lens refracts at slightly different angles
Converging lenses
Bends light inward
Diverging lenses
Bends light outward

4. Lenses & Magnification
Type of converging lens
Magnification – the change in the size of an image
Usually a larger, virtual image

5. Prisms & Dispersion
Prism – transparent block that separates white light into colors
Waves of color travel at different speeds
Violet = slow, refracts more
Red = fast, refracts less
Dispersion – the separation of light into different colors due to wave speed

6. Polarization
Polar filters can be used to block out a direction of transverse waves
Helps with reflection of light (glares)