Friday, August 17, 2012

BuzzFeed - Latest: Animals Shaking Off Water In Slow Motion

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Animals Shaking Off Water In Slow Motion
Aug 17th 2012, 19:17

It's for science! Sixteen different species were filmed by the Georgia Institute of Technology, shaking it off in slow-mo, to determine who has to shake the hardest to get dry.

The artistic video, accompanied by classical music.

Source: youtube.com  /  via: viralviralvideos.com

LINK: The research paper this footage produced.

"In cold wet weather, mammals face hypothermia if they cannot dry themselves. By rapidly oscillating their bodies, through a process similar to shivering, furry mammals can dry themselves within seconds. We use high-speed videography and fur particle tracking to characterize the shakes of 33 animals (16 animals species and five dog breeds), ranging over four orders of magnitude in mass from mice to bears. We here report the power law relationship between shaking frequency f and body mass M to be f ∼ M−0.22, which is close to our prediction of f ∼ M−0.19 based upon the balance of centrifugal and capillary forces. We also observe a novel role for loose mammalian dermal tissue: by whipping around the body, it increases the speed of drops leaving the animal and the ensuing dryness relative to tight dermal tissue."

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