News tagged with drag force

High-angle helix helps bacteria swim

(Phys.org) —A high-angle helix helps microorganisms like sperm and bacteria swim through mucus and other viscoelastic fluids, according to a new study by researchers from Brown University and the University ...

dateAug 13, 2013 in General Physics
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Spiral arms cradle baby terrestrial planets

New work from Carnegie's Alan Boss offers a potential solution to a longstanding problem in the prevailing theory of how rocky planets formed in our own Solar System, as well as in others. The snag he's untangling: ...

dateJun 25, 2015 in Astronomy
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Researchers align atomic friction experiment

Working together to study friction on the atomic scale, researchers at UC Merced and the University of Pennsylvania have conducted the first atomic-scale experiments and simulations of friction at overlapping ...

dateJun 24, 2015 in Nanophysics
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Exploring head shape and aerodynamics

It's a bird… it's a plane… it's a bat! All three may be soaring through the sky, but their shapes vary greatly, which affects their aerodynamics during flight. Birds typically have streamlined head profiles ...

dateJun 18, 2015 in Plants & Animals
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The physics of badminton

(Phys.org)—When it comes to flying projectiles, the badminton shuttlecock or "birdie" is unusual in that it flips on impact with a racket so that it always flies cork-first. This flipping motion arises ...

dateJun 17, 2015 in General Physics feature
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