Infrared Rays

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Infrared Rays Technology

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Infrared Rays

  1. 1. Submitted by: Mohammed Hisham Yakub Computer Science
  2. 3. <ul><li>1800 by Sir Frederick William Hershel </li></ul><ul><li>Thought colors were associated with heat </li></ul><ul><li>Used 3 thermometers with blackened bulbs (measure heat of different colors) </li></ul><ul><li>Studied beyond red light. </li></ul><ul><li>It was called “Calorific Rays”. Which is now known as “Infrared Rays” in the late 19 th Century. </li></ul>
  3. 4. <ul><li>Prism Mirror </li></ul>
  4. 5. <ul><li>Infrared (IR) light is electromagnetic radiation with a wavelength longer than that of visible light, starting from the nominal edge of visible red light at 0.7 micrometers, and extending conventionally to 300 micrometers. </li></ul><ul><li>The Origination Of The Word </li></ul><ul><li>The name means below red, the Latin word “ infra” meaning &quot;below&quot;. Red is the color of the longest wavelengths of visible light. </li></ul>
  5. 6. <ul><li>Near-Infrared (0.7 µm – 1.4 µm) </li></ul><ul><li>Short-Infrared (1.4 µm – 3 µm) </li></ul><ul><li>Mid-Infrared (3 µm – 1000 µm) </li></ul><ul><li>Long-Infrared (8 µm – 15 µm) </li></ul><ul><li>Far Infrared (15 µm -1,000 µm) </li></ul>
  6. 7. Band Descriptor Wavelength Range O Band Original 1260 – 1360 nm E Band Extended 1360 – 1460 nm S Band Short Wavelength 1460 – 1530 nm C Band Conventional 1530 – 1565 nm L Band Long Wavelength 1565 – 1625 nm U Band Ultra long Wavelength 1625 – 1675 nm
  7. 9. <ul><li>Infrared light from the Sun only accounts for 49% of the heating of the Earth. </li></ul><ul><li>Objects at room temperature will emit radiation. </li></ul>
  8. 14. Infrared light from the LED of an Xbox 360 remote control as seen by a digital camera. IR Filter in a Camera
  9. 17. IR Satellite picture Weather Map
  10. 18. <ul><li>Infrared Reflectograms . </li></ul>The Arnolfini Portrait by Jan van Eyck, National Gallery, London
  11. 19. <ul><li>Used for treatment of chemotherapy induced oral ulceration as well as wound healing. </li></ul>
  12. 20. The Spitzer Space Telescope is a dedicated infrared space observatory currently in orbit around the Sun. NASA image.
  13. 27. <ul><li>NASA, ESA, ISAS are doing research in space. </li></ul><ul><li>How planets, stars, galaxies are formed. </li></ul><ul><li>Finding new possible life on other Planets. </li></ul>
  14. 31. <ul><li>Hazards to the eyes and the vision. </li></ul><ul><li>Point – Point lasers can cause burns. </li></ul><ul><li>Cancer and Leukemia. </li></ul>

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