Become a game show contestant in this online activity from A Science Odyssey and ask a series of questions to a panel of mystery scientists, using the answers to determine which scientist is Einstein.

A resource to help understand how Einstein's ideas helped mold modern science.

Understand what relativity is and what Albert Einstein discovered while studying it. Identify special relativity and general relativity.

Learn about the 4th dimensions and the theory of relativity.There is no absolute, or "same," time and space. This means time and space are different for everyone! How you experience events in time and space depends on two important...

Albert Einstein publishes his special theory of relativity and his theory on the quantum nature of light, which he identified as both a particle and a wave. With ever new appliances, electricity begins to transform everyday life.

A decent explanation of the concept of time as the fourth dimension. The author discusses Einstein's theory of special relativity and the idea of space-time.

Flip over this interactive OLogy card and start learning bite-size pieces of useful information about E = mc^2, Einstein's famous equation that shows the relationship between mass and energy.

Article outlining the scientific history behind the discovery of black holes. The writer discusses how scientific theories guide scientists in creating explanations for natural phenomena.

A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...

This site from ScienceWorld gives a brief description of Brownian motion. It also goes on with a detailed series of formula derivations utilizing calculus. Links to related topics and definitions are given.

This site examines the black hole as an object in astrophysics. Delve into this comprehensive resource that covers this concept from its history, to qualitative physics, the reality of black holes, mathematical physics and more.

Brief explanation of observations that Arthur Eddington used to test Einstein's general theory of relativity. Click on the starred words to learn more about the topic.

Use this site to find out what is a black hole in space and try an experiment.

Using a question and answer format, this page discusses the question: "Is the Speed of Light Constant?" Discusses some of the history and experiments performed with light and the conclusions drawn from those findings.

This site from ScienceWorld mostly describes Lenard's most notable scientific discoveries and contributions. Includes minimal biographical information and links to additional information on related subjects.

Website for the PBS series "A Science Odyssey." Numerous opportunities to explore the people and discoveries of science.

A very detailed look at gravitational force and the many theories that have been put forward to try to explain it. Includes lots of illustrations.

A clear (as these things go) presentation of the calculation of relativistic momentum. Given with a handy calculator that even calculates the % error. The site goes on to Momentum of a Photon, and to Relativistic Energy in Terms of...

A mathematically understandable presentation of relativistic energy. Parts include Relativistic Energy, Rest Mass Energy, Conservation of Energy, Pair Production, Relativistic Kinetic Energy, and even Kinetic Energy. A couple of...

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.

[Free Registration/Login Required] Watch a clock slow down in the strong gravitational field near the event horizon of a massive black hole. A PDF worksheet and a video tutorial are also available. [2:57]

The BBC reveals what is known about wormholes, a possible consequence of Einstein's Theory of General Relativity in which space is bent, opening up the possibility of time travel.

A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...

A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...