New tools such as special microscopes and the cyclotron take research to higher levels, while average citizens enjoy novel amenities such as the FM radio.

Scientists' understanding of the structure of the atom and of its component particles grows, the phone and radio become common, and the modern television is born.

Scientists discover and probe x-rays and radioactivity, while inventors compete to build the first radio.

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.

[Free Registration/Login Required] An informational text about how a compass works using electromagnetic force. A question sheet is available to help students build skills in reading comprehension.

Investigate a the forces exerted on a charged particle by electric and magnetic fields. Initially, find out how the charge behaves in an electric field. Then, see how the charge behaves in a magnetic field. Finally, initiate both fields...

An electromagnetic induction model that simulates an electric generator made from a conducting loop rotating in a uniform magnetic field and connected to an ammeter.

This simulation demonstrates a rotating conducting disk in a magnetic field which produces a current or a self-exciting dynamo.

Simulate the movement of a rail gun in this interactive model. Learn how a magnetic field is generated by running electrical current through long rods that accelerates a current-carrying cross-rod.

This ScienceWorld site describes the Scottish mathematician and physicist James Maxwell (1831-1879) who published physical and mathematical theories of the electromagnetic field.

Batteries are expensive to purchase in a store, but you can make one your self for exactly 24 cents. In this experiment, you will make your own voltaic pile using pennies and nickels and determine how many coins in a pile will make the...

Through labs, readings, videos, and discussions, students learn about the concepts of Electromagnetic Induction.

You can use a bar magnet and a compass to get a rough idea of the strength of Earth's magnetic field. Read this article to find out how!

This article helps explain the concept of electromagnetism as well as magnetic fields and the properties of the speed of light.

Biography of Sir Isaac Newton (1642-1727), a scientist whose impact is felt in many disciplines today. His laws of motion are integral to basic physics, and he co-invented calculus.

The telephone and first practical incandescent light bulb are invented while the word "electron" enters the scientific lexicon.

The Industrial Revolution is in full force, Gramme invents his dynamo and James Clerk Maxwell formulates his series of equations on electrodynamics.

The legendary Faraday forges on with his prolific research and the telegraph reaches a milestone when a message is sent between Washington, DC, and Baltimore, MD.

Defense-related research leads to the computer, the world enters the atomic age and TV conquers America.

Theodore Maiman built the world's first operable laser. Ironically, Maiman's first paper announcing this momentous achievement, which many other scientists had been racing to complete themselves, was rejected. Since then, however, lasers...

Understand and learn about the properties of space and time and the concept of relativity.

Learn the convention for describing the direction of magnetic fields. Challenge questions are included.

Official Nobel Institute biography of Hofstadter. Very little personal information. Lots and lots of science work, description, etc.

Read the passage "Resonance in a Tube" and complete the five-question quiz to test your knowledge of sound.