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Canon DSLR Challenge | all galleries >> Challenge 43: Good Vibrations (hosted by toc) >> Challenge 43: Eligible > Standing Waves *
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14-JUN-2005 Jim H.

Standing Waves *

Standing waves in water as excited by a speaker beneath.

Canon EOS 20D ,Canon EF-S 60mm f/2.8 Macro USM
1/250s f/16.0 at 60.0mm iso200 with Flash hide exif
Full EXIF Info
Date/Time14-Jun-2005 02:33:41
MakeCanon
ModelCanon EOS 20D
Flash UsedYes
Focal Length60 mm
Exposure Time1/250 sec
Aperturef/16
ISO Equivalent200
Exposure Bias
White Balance (-1)
Metering Modematrix (5)
JPEG Quality (6)
Exposure Programprogram (1)
Focus Distance

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jimhwy14-Jun-2005 15:16
Yes. I drove the speaker with a signal generator and tuned through the frequencies to find ones that excited particular "modes". At certain frequencies, resonances were hit and the water splashed completely out of the cup. This frequecy seemed to create a nice flower-like pattern. My old high-school physics teacher would be proud :)
Peter Hollinger14-Jun-2005 13:36
Very interesting! Did you have to "tune" the music to get the waves you wanted?