Woodpecker hammering down on a pole
Never fails to bring a
funky haired cute woodpecker is busy sliding and pecking
the wood on
his way down
There are prestigious mechanical engineers on
the web to explain ... of this toy.
"The Woodpecker Toy is a
system which can only operate in the presence of friction as it relies on
combined impacts and jamming. Restitution of the beak with ...