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Spiders Can Fly Hundreds of Miles Using Electricity (vice.com)
An anonymous reader shares a report: On Halloween in 1832, the naturalist Charles Darwin was onboard the HMS Beagle. He marveled at spiders that had landed on the ship after floating across huge ocean distances. "I caught some of the Aeronaut spiders which must have come at least 60 miles," he noted in his diary. "How inexplicable is the cause which induces these small insects, as it now appears in both hemispheres, to undertake their aerial excursions." Small spiders achieve flight by aiming their butts at the sky and releasing tendrils of silk to generate lift.
Darwin thought that electricity might be involved when he noticed that spider silk stands seemed to repel each other with electrostatic force, but many scientists assumed that the arachnids, known as "ballooning" spiders, were simply sailing on the wind like a paraglider. The wind power explanation has thus far been unable to account for observations of spiders rapidly launching into the air, even when winds are low, however. Now, these aerial excursions have been empirically determined to be largely powered by electricity, according to new research published Thursday in Current Biology. Led by Erica Morley, a sensory biophysicist at the University of Bristol, the study settles a longstanding debate about whether wind energy or electrostatic forces are responsible for spider ballooning locomotion.
Darwin thought that electricity might be involved when he noticed that spider silk stands seemed to repel each other with electrostatic force, but many scientists assumed that the arachnids, known as "ballooning" spiders, were simply sailing on the wind like a paraglider. The wind power explanation has thus far been unable to account for observations of spiders rapidly launching into the air, even when winds are low, however. Now, these aerial excursions have been empirically determined to be largely powered by electricity, according to new research published Thursday in Current Biology. Led by Erica Morley, a sensory biophysicist at the University of Bristol, the study settles a longstanding debate about whether wind energy or electrostatic forces are responsible for spider ballooning locomotion.
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Well... Can you see electricity? Nope.
(A blinding, blue-white bolt of lightning strikes AC)
Thor has spoken.
I wonder if plants do it, too.
A number of plants have windborne seeds surrounded or mounted beneath a thready structure. (Dandelions, cottonwood, and milkweed come to mind immediately.) Other structures could also get some assistance from electriec lift. Charge would be a good thing to look for.
We already know that plants use piezoelectricity to increase cell growth on the concave side of a loaded branch in order to grow upward or outward. Why not another electrical hack?
Why should spiders - or the animal kingdom in general - have all the fun?
Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
Spiders invented electric vehicles before humans.
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