When NASA first started sending up astronauts, they quickly discovered that ball-point pens would not work in zero gravity. To combat this problem, NASA scientists spent a decade and $12 billion developing a pen that writes in zero gravity, upside down, underwater, on almost any surface including glass and at temperatures ranging from below freezing to over 300° C. USA proposed to have a value added tax for this project while Russians used pencils instead :P
Posted on: Mon, 21 Jul 2014 12:40:23 +0000
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