Hallelujah: a woodpecker for protective helmets of the human head.Photos & videos
A woodpecker with distinct rap to beats bark up to 22 times per second, and like a man beating his head on the wall at 25 kilometers per hour. So how does this without getting hurt this bird with a cracked skull or that falls from the tree? {Solomon inherited David o people said our Mantiq al-Tayr and Utena of everything this is credit reflected} Sura an-Naml: 16.
Researchers say in China, Hong Kong and Britain that bird Woodpecker protects itself from shocks you, relying on a porous spongy areas in the skull bones which are found particularly in the front and in the back of the head by a small area of the cerebrospinal fluid between the skull and the brain. The researchers also discovered another factor also helps in absorption of blows caused by clicking the external tissues of the upper part of the beak longer than 1.6 mm from the lower part of it making the parts did not meet together in one click, but with a very narrow margin and clicking them shock distribution and reduces its strength.
For their part, researchers wish to mimic the Woodpecker for the manufacture of technical protective helmets for human head to reduce the significant proportions of deaths and permanent disabilities in the world caused by head injuries. Says Kim Blackburn, an engineer at Cranfield University in London, said the discovery of the Woodpecker's head provides a fine example of the highly advanced structures to solve what seemed at first to challenge the impossible. "
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