Benjamin Franklin (1706-1790),US scientist,inventor and statesman. Franklin was one of the Founding Fathers of the United States. He proposed and may have conducted experiments with a kite in a thunderstorm to show that lightning is electricity. 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. He helped shape the American Revolution and was a signatory of the US Declaration of Independence. Here,he points towards a map of Philadelphia,Pennsylvania,where he lived from the age of 17 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / American Philosophical Society |
Bildgröße: | 2622 px × 3337 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |