"Look at light and admire its beauty. Close your eyes, and then look again: what you saw is no longer there; and what you will see later is not yet."
Optical Illusions. Mirage. Light pipes and fiber optics.
Refraction in a prism.
Dispersion. Dependence of refractive properties on frequency.
White light as a mixture of all frequencies. Monochromatic and polychromatic light.
Lenses. Convex and concave lenses. Focal point and focal length. Optical power of a lens.
Ray tracing in thin lenses. Finding images by ray tracing in convex and concave lenses.
Properties of images. Virtual images and real images. Upright and inverted images. Magnification.
The Lens Equation. Convention for signs of focal length, object distance, image distance.