Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Electromagnetic Waves

2,226 views

Published on

Published in: Technology, Business
  • Be the first to comment

Electromagnetic Waves

  1. 1. Waves Ms. Shinkle 11/2-5, 2007
  2. 2. Types of Waves <ul><li>Mechanical Waves </li></ul><ul><ul><li>Sound </li></ul></ul><ul><ul><li>Earthquake </li></ul></ul><ul><ul><li>Springs </li></ul></ul><ul><li>Electromagnetic </li></ul><ul><ul><li>Light </li></ul></ul><ul><ul><li>Radio </li></ul></ul><ul><ul><li>X-ray </li></ul></ul>
  3. 3. Electromagnetic Radiation <ul><li>Examples: Radio, TV, Microwave, X-Rays, Gamma Rays, Light, Ultraviolet, Infrared </li></ul><ul><li>Do NOT need a medium </li></ul><ul><ul><li>Can travel through space </li></ul></ul><ul><li>How astronomers observe the universe </li></ul>
  4. 4. How Fast? <ul><li>EMR is the fastest stuff around </li></ul><ul><li>Speed (“ c ”) is 3 × 10 8 m/s </li></ul><ul><li>All EMR travels at the same speed </li></ul><ul><li>Each type of EMR has a different wavelength and frequency </li></ul>
  5. 5. Wave Basics <ul><li>Baseline E. Positive amplitude </li></ul><ul><li>Peak F. Negative amplitude </li></ul><ul><li>Peak to peak wavelength G. Trough </li></ul><ul><li>Trough to trough wavelength </li></ul>
  6. 6. Electromagnetic Spectrum
  7. 7. How do you make EMR? <ul><li>Just like any other wave, something has to move or vibrate </li></ul><ul><li>Only now, it takes an electric charge (like an electron) that vibrates or moves </li></ul>
  8. 8. Wavicles <ul><li>EMR can act like a wave – it reflects, refracts, diffracts, etc. </li></ul><ul><li>EMR can act like a particle (Photons) </li></ul><ul><li>That’s what makes solar panels work. It’s called the Photoelectric Effect. </li></ul>
  9. 9. Visible Light in the EMR Spectrum
  10. 10.                                                                                                                             

×