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Elec trom agne tic radi atio n wa ves

Explore the properties and applications of electromagnetic radiation waves, including radio waves, microwaves, infrared waves, visible light, ultraviolet waves, X-rays, and gamma rays. Discover how these waves are emitted, detected, and utilized in various fields.

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Elec trom agne tic radi atio n wa ves

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  1. Electromagneticradiationwaves • Waves are three dimensional • Waves vibrate in all planes around a center line. • The waves have high points called “crests.” • Waves also have low points called “troughs.” • *The distance from one crest to the next crest is called a “wavelength.” • *The number of waves passing a given point in one second is called the “frequency.” wavelength

  2. Remember radio waves are long…and gamma rays are small Radio-TV -Microwave- Infrared - VISIBLE -Ultraviolet -X-rays - Gamma- Cosmic

  3. Radio(Longest electromagnetic waves) • Emitted by • Astronomical Objects • Radio Station Transmitters • Detected by • Ground based radio telescopes • *If you turn on a radio, it will convert the radio wave energy into sound energy.

  4. Microwave • Emitted by: • Gas clouds collapsing into stars • Microwave Ovens • Radar Stations • Cell Phones • Detected by • Microwave Telescopes • Food (heated) • Cell phones • Radar (systems)

  5. Infrared(Heat or Thermal)Are you a source of infrared? YES you are! • Emitted by • Sun and stars (Near) • TV Remote Controls • Food Warming Lights (Thermal) • *Everything at room temperature or above,=HEAT • Detected by • Infrared Cameras • TVs, VCRs, • Your skin

  6. VisibleEachcolorisa differentsizewave.Red the longest & violet the shortest • Emitted by • The sun and other astronomical objects • Laser pointers • Light bulbs • Detected by • Cameras (film or digital) • Human eyes • Plants (red light) • Telescopes RoyG.Biv

  7. UltravioletSunburn / black light • Emitted by • Tanning booths (A) • The sun (A) • Black light bulbs (B) • UV lamps • Detected by • Space based UV detectors • UV Cameras • Flying insects (flies) He can get skin cancer!

  8. X-ray • Emitted by • Astronomical objects • X-ray machines • CAT scan machines • Older televisions • Radioactive minerals • Airport luggage scanners • Detected by • Space based X-ray detectors • X-ray film • CCD detectors

  9. Gamma Ray(Short electromagnetic waves but more energetic) • Emitted by • Radioactive materials • Exploding nuclear weapons • Gamma-ray bursts • Solar flares • Detected by • --Geiger counters • Gamma detectors and astronomical satellites • Medical imaging detectors

  10. How big are the waves? • A great question! • Radio waves= (Buildings to human size); • Microwaves (Humans-beetles); • Infrared waves (Eye of a needle); Visible waves (microscopic size)! WOW! All the rest are the size of molecules, atoms, atomic nuclei and smaller..

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