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Wonder ball: Acoustics help visually impaired

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Uploaded by on Feb 4, 2008

Balls that sing so even if you can't see it you can hear it. This cricket ball, fine-tuned by the students of National Institute for Visually Handicapped has ball bearings inside, which make a sound when rolled. Now the World Blind Cricket Council uses this ball. It has opened up a whole new world of sport for the visually impaired.

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