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SCIENCE: Calculating the true pressure required to propel penguin feces | |
| AkashicRecord®
Offer Upgrade  User ID: 74968099  United States07/15/2020 07:24 AM Report Abusive Post Report Copyright Violation | Just when you think you've seen it all... (The images are somewhat hilarious) [link to phys.org (secure)] Projectile Trajectory of Penguin's Faeces and Rectal Pressure Revisited, arXiv:2007.00926 [physics.bio-ph] A pair of researchers, one with Kochi University, the other Katsurahama Aquarium, both in Japan, has refined the estimate of the amount of pressure required by an Adélie penguin to shoot its feces a necessary distance. Hiroyuki Tajima and Fumiya Fujisawa have written a paper describing their new calculations and what it could mean for zookeepers. Adélie penguins are reluctant to leave a nest when they are brooding eggs—the danger to the eggs is too great. But they also have a need to keep a clean nest. Evolution has stepped in to solve the problem for the penguins—when they need to defecate, they point their body away from the nest, lift their tail, and shoot their feces away from the nest, leaving a colored trail. The researchers of the 2003 study wondered how much pressure would have to build up inside of their bodies to shoot their waste such a distance, which was 30 to 40 centimeters. By measuring the distances of the colored trails, the consistency of the excrement and the aperture of the cloaca, they were able to calculate how much pressure is required to shoot the excrement the distance the penguins achieved—about three times that of humans.  Sorry, that message is no longer in the database. |
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