SlidesApr29-May1

SlidesApr29-May1 - - Review solving equations of motion,...

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- Review solving equations of motion, differential equations Spherical Waves s A spherical wave propagates radially outward from the oscillating sphere s The energy propagates equally in all directions s The intensity is 2 r 4 P I π = Plane Wave s Far away from the source of a spherical wave, the wave fronts are nearly flat parallel planes s The rays are nearly parallel lines s A small segment of the wave front is approximately a plane wave Dynamic Microphone Collisions of air molecules from a sound wave with a pickup surface (or “diaphragm”, usually just under the metal grill) causes the surface to vibrate. The diaphragm is attached to a small coil of wire that sits next to a magnet. When the coil vibrate relative to the magnet, a current is induced to flow according to Faraday’s law of induction.
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Voice Sounds are generated when the vocal cords (diagram shown on right) oscillate during exhalation of air from the lungs. The vocal chords consist of folded sections of mucous membrane
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This note was uploaded on 05/02/2009 for the course PHYS PHYS 1C taught by Professor F during the Spring '00 term at UCSD.

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SlidesApr29-May1 - - Review solving equations of motion,...

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