A human powered hydrofoil design is tested in a fresh water lake. This device uses a bouncing motion to propel the rider through the water at speeds up to 15 miles per hour. The device requires about as much effort as a runner sprinting | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Kinsman, Edward |
Taille de l’image : | 4050 px × 2700 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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