Define Electromagnetic Fields
Electromagnetic Waves or Electromagnetic Radiation
Light, ultraviolet light, infrared light, radio waves, microwaves, X-rays, and gamma rays are all different forms of electromagnetic waves or electromagnetic radiation. But what are electromagnetic waves?
Electromagnetic waves are oscillations in electric and magnetic fields. Electric fields cause forces between electric charges such as protons and electrons. Magnetic fields cause magnetic forces such as those between a magnet and a piece of iron. Changing electric fields cause magnetic fields and changing magnetic fields cause electric fields.
In electromagnetic waves the electric and magnetic fields are perpendicular to each other and to the direction the wave is traveling. Both the electric and magnetic fields are oscillating between maximum positive and maximum negative values. Because of the way changing electric and magnetic fields each cause the other type of field both the electric and magnetic fields have maximum positive, maximum negative, and zero values simultaneously. Perpendicular electric and magnetic fields oscillate and the oscillations propagate in a direction perpendicular to both fields.
- Internetia
Join LinkedIn and see how you are connected to Internetia. It's free.Get access to insightful information about your network at thousands of companies!
- Free Game Internet Safety
Sharpen your brain with daily games and puzzles. AARP.org has new free games online, such as Sudoku, Crosswords, Solitaire, Backgammon, Skeeball, Word games and more!
- Magnet Schedule School
- Camera Network
- Internet Security Suite Free Download
