NASA
Nasa: Imagine the Universe: Neutron Stars and Pulsars
Discover what neutron stars and pulsars are and view pictures of them. Includes links to additional resources and lesson plans.
Famous Scientists
Famous Scientists: Albert Abraham Michelson
Meet Nobel Prize winner, Albert Michelson, an American physicist known for his work on the measurement of the speed of light and especially for the Michelson-Morley experiment.
NASA
Nasa: Imagine the Universe: Black Holes
Learn what black holes are and the myths that surround them.
American Museum of Natural History
American Museum of Natural History: O Logy: Train of Thought
Try out your ability to think like Einstein by working through two thought experiments that help explain how satellites stay in orbit and how the speed of light affects the universe.
Physics Classroom
The Physics Classroom: Optical Density and Light Speed
A tutorial page explaining how the speed of light is dependent upon the optical density of the material through which it moves. Optical density is related to the index of refraction; sample values are given.
New Advent
Catholic Encyclopedia: Jean Bertrand Leon Foucault
A lengthy biographical sketch from The New Advent of Jean-Bertand-Leon Foucault (1819-1868 CE) physicist and mechanician. Discusses his upbringing, scientific work, major accomplishments and published articles. Please note that "The...
Physics Classroom
The Physics Classroom: Refraction and Ray Model of Light: Direction of Bending
In this interactive physics tutorial about refraction, students investigate the topic of the direction of bending of a light wave.
Science Struck
Science Struck: How Does Light Travel Through Space and Other Media?
A detailed discussion of the nature of light, how it can travel through a vacuum, and how the speed of light is affected when light travels through a medium.
Project Britain
Primary Homework Help: Light and Shadows Quiz
This resource provides information about light and shadows. In addition, there is a short quiz that can be taken.
CK-12 Foundation
Ck 12: Physical Science: Properties of Electromagnetic Waves
[Free Registration/Login may be required to access all resource tools.] The speed of electromagnetic waves, their wavelengths and frequencies and how to calculate wavelength or wave frequency.
CK-12 Foundation
Ck 12: Physics Simulation: Least Time
[Free Registration/Login Required] Explore how Snell's Law arises out of the principle of least time; understand how light rays change direction at interfaces between materials using this interactive simulation. A PDF worksheet and a...
CK-12 Foundation
Ck 12: Physics: Wave Optics Study Guide
A study guide for concepts related to wave optics.
University of Texas at Austin
The University of Texas Mc Donald Observatory: Super Gelatin
Students measure the angles of refraction of laser light traveling through gelatin, then plot their data to calculate the gelatin's index of refraction.
NASA
Nasa Space Place: What Is a Light Year?
Brief description of light-years with examples and images.
NC State University
Pira Demonstration Catalog: Speed of Light
A series of short descriptions of possible physics demonstrations for illustrating or measuring the speed of light. Suitable as a supplement to a teacher lesson plan or as an idea-generator for student projects.
American Museum of Natural History
American Museum of Natural History: O Logy: Light, Matter, Energy: Light the Way
What is electromagnetic radiation and how does it work? Review a captioned graphic that explains electromagnetic radiation and the visible and invisible types of radiation on the electromagnetic spectrum.
Trinity College Dublin
The History of Mathematics: Roemer
A short biographical sketch of the life and work of Ole Roemer (1652-1719 CE). Identifies his scientific discoveries and contributions in astronomy.
Other
Fear of Physics: Albert Einstein's Theory of Relativity
Fear of Physics uses animations and simple language to teach the theory of relativity.
Other
Hstry Timeline: It's the Speed of Light, Dude!
An interactive timeline that students can read, watch and listen to in order to understand the scientist who tried and succeeded in measuring the speed of light.
University of Oregon
University of Oregon: Electromagnetism
A solid summary from the University of Oregon of the work of James Maxwell Clerk, Michael Faraday, and others in the field of electric and magnetic phenomena. This is a fine essay.
PBS
Pbs Teachers: Math Space Odyssey: How Long Is a Light Year?
This lesson helps students to demonstrate the ability to use a light year as a standard of measurement to calculate time and distance from the earth. They will also solve problems based on light years.
Other
Uni: Astronomy: Formula Light
Learn about light properties through practice with formulas. This resource shows the relationship between the speed of light, its wavelength, and its frequency. A fairly simple, but important relationship.
Physics4kids
Physics 4 Kids: Mechanics and Motion
Motion is one of the key topics in physics. Everything in the universe moves. It might only be a small amount of movement and very very slow, but movement does happen. Don't forget that even if you appear to be standing still, the Earth...
Physics4kids
Physics 4 Kids: Modern Physics Quiz
Take this ten question multiple choice quiz on modern physics