Boston University
Bu: Optics: Geometric Optics
Several short descriptions of demonstrations which illustrate principles of geometric optics (many of which focus upon refraction).
Wolfram Research
Wolfram Science World: Young, Thomas
This site from ScienceWorld provides a very short but factual biographical sketch of Thomas Young (1773-1829 CE) and describes his most notable scientific discoveries and contributions. Links are also provided throughout for additional...
University of St. Andrews (UK)
University of St. Andrews: Augustin Fresnel
A short biographical sketch on the life and work of Augustin Fresnel (1788-1827). Comments on a few of his scientific accomplishments.
Exploratorium
Exploratorium: Snacks
Exploratorium's snacks aren't edible, but they are good! Use your science skills to discover gravity, learn about biology, do fun experiments.