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              Tiny Bubbles Turn Water Into Effective Cleaning Tool

   by George Putic

   While a stream of ordinary cold water may clean some dirt it is not
   considered an effective cleaning agent. But when two inventors at the
   University of Southampton added a little ultrasound the water became
   highly effective for removing germs from tiny cracks and crevices.
   VOA's George Putic reports.
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   [1]http://www.voanews.com/media/video/3035343.html

References

   1. http://www.voanews.com/media/video/3035343.html