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First gear found in nature.

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BoogieMonster
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« on: September 13, 2013, 09:51:11 AM »

I found this interesting:

Quote from: phys.org


a [sic] plant-hopping insect found in gardens across Europe - has hind-leg joints with curved cog-like strips of opposing 'teeth' that intermesh, rotating like mechanical gears to synchronise the animal's legs when it launches into a jump.

The finding demonstrates that gear mechanisms previously thought to be solely man-made have an evolutionary precedent. Scientists say this is the "first observation of mechanical gearing in a biological structure".

Through a combination of anatomical analysis and high-speed video capture of normal Issus movements, scientists from the University of Cambridge have been able to reveal these functioning natural gears for the first time. The findings are reported in the latest issue of the journal Science.

[...]Each gear tooth has a rounded corner at the point it connects to the gear strip; a feature identical to man-made gears such as bike gears – essentially a shock-absorbing mechanism to stop teeth from shearing off.

[...]This is critical for the powerful jumps that are this insect's primary mode of transport, as even miniscule discrepancies in synchronisation between the velocities of its legs at the point of propulsion would result in "yaw rotation" - causing the Issus to spin hopelessly out of control.
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cyghost
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« Reply #1 on: September 13, 2013, 13:29:37 PM »

incredible!

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cr1t
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cr1t
« Reply #2 on: September 13, 2013, 15:00:58 PM »

[sarcasm]Well this clearly proves intelligent design.[/sarcasm]
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Brian
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« Reply #3 on: September 13, 2013, 15:32:17 PM »

[sarcasm]Well this clearly proves intelligent design.[/sarcasm]
absolutely ...far to complex for mere evolution: imagine how creative god must have been to design such itsibitsy little gears: do they have low gear and reverse as well? if not god fucked up!
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