Photo Researchers ftp March 2011
EN_00958297_0827
Benjamin Franklin (1706-1790), American scientist, inventor and statesman. Franklin showed that lightning is electricity by flying a kite carrying a metal key during a thunderstorm. This led to his invention of the lightning rod to protect buildings from lightning strikes. He also invented fins for swimming, bifocal glasses, a urinary catheter and showed that evaporation cooled objects. In between all this, he also found time to found the USA, help shape the revolution and be a signatory of the Declaration of Independence.
2011-03-24
EAST NEWS
Science Source
Spencer Sutton
BR6018
3,4MB
33cm x 31cm przy 300dpi
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