Science Buddies
Science Buddies: Testing a Parabolic Reflector With Light From an Led
You can see examples of parabolic reflectors in flashlights, car headlights, satellite TV antennas, and even on the sidelines at football games. In this project, you can use an LED and a simple photodector to investigate this concept.
Other
Lighthouses: Lighting the Lights
A description of the early lights used in lighthouses and how these lights evolved into what they are today. Explains the contributions of Fresnel to the development of these lights; discusses the Fresnel orders.