mando1463 said:Ok out of the 4 types of boomerangs "the hunter" type or style are the only ones that return to the thrower
Over to you duck
mando1463 said:Ok out of the 4 types of boomerangs "the hunter" type or style are the only ones that return to the thrower
Over to you duck
the duck said:DR you got it
Unaipon took out provisional patents for 19 inventions but was unable to afford to get any of his inventions fully patented. His most successful invention (provisional patent 15 624), a shearing machine that converted curvilineal motion into the straight line movement which is the basis of modern mechanical shears, was introduced without Unaipon receiving any financial return and, apart from a 1910 newspaper report acknowledging him as the inventor, he received no credit.
Other inventions included a centrifugal motor, a multi-radial wheel and a mechanical propulsion device. He was also known as the Australian Leonardo da Vinci for his mechanical ideas, which included pre World War I drawings for a helicopter design based on the principle of the boomerang and his research into the polarisation of light and also spent much of his life attempting to achieve perpetual motion
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