waves mr. bak this material is based upon work supported by the national science foundation under...
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![Page 1: WAVES Mr. Bak This material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462](https://reader034.vdocuments.mx/reader034/viewer/2022052510/56649f0e5503460f94c22515/html5/thumbnails/1.jpg)
WAVES
Mr. BakThis material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462
![Page 2: WAVES Mr. Bak This material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462](https://reader034.vdocuments.mx/reader034/viewer/2022052510/56649f0e5503460f94c22515/html5/thumbnails/2.jpg)
Content• What are waves• Types • Electromagnetic waves
– AC current
• Ocean wave creation– movement
• Reflection• Refraction• Interference
– Constructive/destructive
• Doppler Effect
![Page 3: WAVES Mr. Bak This material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462](https://reader034.vdocuments.mx/reader034/viewer/2022052510/56649f0e5503460f94c22515/html5/thumbnails/3.jpg)
What are Waves?
• Energy Transfer
• Does Medium Move?
![Page 4: WAVES Mr. Bak This material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462](https://reader034.vdocuments.mx/reader034/viewer/2022052510/56649f0e5503460f94c22515/html5/thumbnails/4.jpg)
2 Types of Waves
• Longitudinal •Transverse
![Page 5: WAVES Mr. Bak This material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462](https://reader034.vdocuments.mx/reader034/viewer/2022052510/56649f0e5503460f94c22515/html5/thumbnails/5.jpg)
Common Types of Waves
• Electromagnetic Waves– Light, Microwaves, X-rays, etc.– AC current
• Ocean Waves
• Sound
![Page 6: WAVES Mr. Bak This material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462](https://reader034.vdocuments.mx/reader034/viewer/2022052510/56649f0e5503460f94c22515/html5/thumbnails/6.jpg)
Electro Magnetic
![Page 7: WAVES Mr. Bak This material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462](https://reader034.vdocuments.mx/reader034/viewer/2022052510/56649f0e5503460f94c22515/html5/thumbnails/7.jpg)
Ocean Wave Creation
• Duration
• Speed
• Fetch
![Page 8: WAVES Mr. Bak This material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462](https://reader034.vdocuments.mx/reader034/viewer/2022052510/56649f0e5503460f94c22515/html5/thumbnails/8.jpg)
Wave Motion
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Refraction
• Snell’s Law
• Ocean - shallow water– Wave moves slower
• Causes wrapping
• Light - change speed– Shallow– prism
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Refraction Pictures
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Wave Diffraction
• Encounters obstacle – Some energy blocked– What makes it through spreads– Longer wave length travels more effecently
• Red sunsets• Bass travels better
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Diffraction Picture
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Interference
• 2 types of interference
• Constructive and Destructive– Phase
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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
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Are Waves a good or a bad thing?