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Published byPaula Wade Modified over 9 years ago
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WAVES Mr. Bak This material is based upon work supported by the National Science Foundation under Grant No. NSF DGE-0742462
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Content What are waves Types Electromagnetic waves –AC current Ocean wave creation –movement Reflection Refraction Interference –Constructive/destructive Doppler Effect
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What are Waves? Energy Transfer Does Medium Move?
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2 Types of Waves LongitudinalTransverse
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Common Types of Waves Electromagnetic Waves –Light, Microwaves, X-rays, etc. –AC current Ocean Waves Sound
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Electro Magnetic
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Ocean Wave Creation Duration Speed Fetch
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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?
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