Spectrum

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Spectrum

  1. 1. The Electromagnetic Radiation <ul><li>(Light – the Supreme Informant!) </li></ul>
  2. 2. The Electromagnetic Spectrum <ul><li>More than meets the eye! </li></ul>
  3. 3. Examples from Space!
  4. 4. Wavelength <ul><li>The distance from one wave crest to the next </li></ul><ul><li>Radio waves have longest wavelength and Gamma rays have shortest! </li></ul>
  5. 5. Wave Terminology <ul><li>Wavelength - distance between two like points on the wave </li></ul><ul><li>Amplitude - the height of the wave compared to undisturbed state </li></ul><ul><li>Period - the amount of time required for one wavelength to pass </li></ul><ul><li>Frequency - the number of waves passing in a given amount of time </li></ul>
  6. 6. Wave Relationships <ul><li>Notice from the definitions we can relate the properties of a wave to one another </li></ul>
  7. 7. The Electromagnetic Spectrum <ul><li>Human eyes are only able to process information from the visible part of the spectrum </li></ul><ul><li>Toward longer wavelengths, the spectrum includes infrared light, microwaves, and radio </li></ul><ul><li>Toward shorter wavelengths, the spectrum includes ultraviolet light, X-rays, and gamma rays </li></ul><ul><li>All of these are forms of electromagnetic radiation </li></ul>

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