Electromagnetic spectrum

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Electromagnetic spectrum

  1. 1. Producing Electromagnetic Waves
  2. 2. Producing Electromagnetic Waves
  3. 3. Producing Electromagnetic Waves Maxwell’s electromagnetic equations states that an oscillating electric current should be capable of radiating energy in the form of a wave known as electromagnetic waves (EM waves) that would travel as fast as the speed of light.
  4. 4. Producing Electromagnetic Waves
  5. 5. Producing Electromagnetic Waves Heinrich Hertz
  6. 6. Producing Electromagnetic Waves discovered Hertzian wave – an electromagnetic radiation produced by electrical oscillation in a conductor, of wavelengths ranging from the order of millimetres to kilometres.
  7. 7. Producing Electromagnetic Waves
  8. 8. Producing Electromagnetic Waves
  9. 9. Producing Electromagnetic Waves
  10. 10. How Electromagnetic Waves are Created An EM wave used for communication purposes is made by using a coil and a capacitor in a parallel circuit.
  11. 11. How Electromagnetic Waves are Created + _
  12. 12. How Electromagnetic Waves are Created
  13. 13. How Electromagnetic Waves are Created
  14. 14. How Electromagnetic Waves are Created
  15. 15. How Electromagnetic Waves are Created
  16. 16. The Electromagnetic Spectrum Radio and TV waves are waves that have the longest wavelengths and the lowest frequencies in the electromagnetic spectrum. They can be produced by making electricity oscillate in an aerial.
  17. 17. The Electromagnetic Spectrum
  18. 18. The Electromagnetic Spectrum
  19. 19. The Electromagnetic Spectrum Visible waves are waves that are visible to the naked eye; also known as light waves.
  20. 20. The Electromagnetic Spectrum
  21. 21. The Electromagnetic Spectrum
  22. 22. The Electromagnetic Spectrum

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