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WAVES

WAVES. Mr. Bak This material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462. Content . What are waves Types Electromagnetic waves AC current Ocean wave creation movement Reflection Refraction Interference Constructive/destructive

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WAVES

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  1. WAVES Mr. Bak This material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462

  2. Content • What are waves • Types • Electromagnetic waves • AC current • Ocean wave creation • movement • Reflection • Refraction • Interference • Constructive/destructive • Doppler Effect

  3. What are Waves? • Energy Transfer • Does Medium Move?

  4. 2 Types of Waves • Longitudinal • Transverse

  5. Common Types of Waves • Electromagnetic Waves • Light, Microwaves, X-rays, etc. • AC current • Ocean Waves • Sound

  6. Electro Magnetic

  7. Ocean Wave Creation • Duration • Speed • Fetch

  8. Wave Motion

  9. Refraction • Snell’s Law • Ocean - shallow water • Wave moves slower • Causes wrapping • Light - change speed • Shallow • prism

  10. Refraction Pictures

  11. Wave Diffraction • Encounters obstacle • Some energy blocked • What makes it through spreads • Longer wave length travels more effecently • Red sunsets • Bass travels better

  12. Diffraction Picture

  13. Interference • 2 types of interference • Constructive and Destructive • Phase

  14. Doppler Effect • What is Doppler Effect? • Mostly evident with Sound • As object emitting (sound) waves travels • The movement changes the wave length • Stack up • http://www.lon-capa.org/~mmp/applist/doppler/d.htm

  15. Are Waves a good or a bad thing?

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