WAVES Amplitude and phase Wavelength and Angular wave number Period T
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Transcript of WAVES Amplitude and phase Wavelength and Angular wave number Period T
•WAVES–Amplitude and phase–Wavelength and Angular wave num
ber–Period T
–http://www.youtube.com/watch?v=9UKbBhKPxXQ
Amplitude and phase• Amplitude ym is a maximum
displacement of the element from their equilibrium position as waves pass through them.
• The phase changes linearly with time t. Means that sine function oscillate between +1 and –1.
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Wavelength and Angular wave number
• Wavelength is a distance between repeating unit of the wave shape.
• Consider at time t=0• y(x,0) = ym Sin (kx)
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Period
• Consider and oscillation at x=0 and time t. The displacement of the element of the string can be shown below
WAVES• 3 main types of waves…..
mechanical waves: most familiar. E g: water waves, sound waves, seismic waves
Electromagnetic wave: less familiar. E g : radio waves, visible light.
Matter waves: associated with electron, proton, and other fundamental
http://www.youtube.com/watch?v=4CtnUETLIFs&feature=related