SUNY-Geneseo/Physics & Astronomy
Spring 2024
Analytical Physics II Laboratory
Some Water Wave Images
(Phys 126, Section 2)
T 2:30pm, ISC 219
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Time lapse photo of a water wave travelling to the right, as seen from the side.
Each ellipse is the motion of one particle in the fluid.
The duration of the time lapse is 1 period.
You can make out the amplitude of the wave as the distance between
the horizontal lines near the top of the image.
This amplitude is 4% of the wavelength of the water wave.
This image is from Wallet & Ruellan, 1950, Houille Blanche 5: 483
Animation of the same kind of wave. Note that the water molecules
(red, blue, green, duck) all move in circles or ellipses.
Neither the water (nor the duck) moves towards the shore...
File:Animation for a deep water wave.gif - Wikimedia Commons
Image from wikimedia commons
(https://commons.wikimedia.org/wiki/File:Animation_for_a_deep_water_wave.gif)
The idea is similar for string waves...
the string doesn't move left or right, but the wave does!
Video by Dr. Paul Cruickshank, University of St Andrews School of Physics & Astronomy.
A standing wave, drawn in Excel...