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Devon Bishop Volare

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last 3 solved tasks
I am used to make hydroelectric energy. What am I?
Look carefully image and guess the name of musician.
See negative of movie scene and guess the title. Length of words in solution: 4,2,3,6

Louis Bolk

Born 10 Dec 1866; died 17 Jun 1930 at age 63. Dutch anatomist.

Ballpen in space

When NASA first started sending up astronauts, they quickly discovered that ballpoint pens would not work in zero gravity.
To combat the problem, NASA scientists spent a decade and $12 billion to develop a pen that writes in zero gravity, upside down, underwater, on almost any surface including glass and at temperatures ranging from below freezing to 300 C.
The Russians used a pencil.

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