Thames & Kosmos Geared-Up Gadgets handleiding

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Geared Gadgets

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Geared-Up Gadgets

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AMAZING FACTS!

For a long time, gear systems were considered to be

an exclusively human invention. So when a group

of British biologists discovered an insect with its

very own gear system some years ago, their finding

was all the more astonishing. The insect in question

was the larva of the Issid Planthopper (scientific

name Issus coleoptratus), a tiny creature just a few

millimeters in size.

Of course, they can only take off cleanly if both

hind legs move at the exact same time and push

off with the exact same force. Otherwise, the little

››› These insects tend to get around

by jumping: if disturbed, they use

their powerful hind legs to send

themselves shooting upward.

creature will find itself hurtling off into a spiral,

possibly lurching and making for easy prey. This

synchronized movement is ensured by a minuscule

gear system, consisting of two interlocking structures

attached to the insect’s legs

This means that the real inventor of the

gear wheel is in fact Mother Nature, and

she was using it millions of years before

humans even existed!

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