Hammer time –
Study finds that strikes through air are half as fast as strikes in water.
Jennifer Ouellette – Mar 3, : (UTC UTC )
All told, the team analyzed 90 strikes in the air and 51 strikes in the water. Feller had expected to find that the blows would be as powerful, if not more so, in the air, but the analysis showed just the opposite. The strikes were half as fast, averaging roughly 5 meters per second, or 23 mph. In fact, Feller et al . noted in their paper that the kinetic energy output of the mantis shrimp in air is similar to that of a grasshopper’s leg, while the shrimp could achieve times the power when striking in water. Our little kablammo talk
In other words, perhaps water is better at dissipating the excess kinetic energy produced by the strikes, so the shrimp don’t have to pull their punches quite as much as they do when striking in air. “In air, not only are the forces of drag from water absent, but the entire sensory experience is messed up,” Said Feller . “So maybe — in the absence of a perceived target — the animals don’t give it the full pow so they don’t blow out their joint.”
/ / jeb.
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