( 1706–90), American statesman, inventor, and scientist. He was the only individual to sign all three principal documents of the new nation: the Declaration of Independence, the treaty with Great Britain that ended the American Revolution, and the US Constitution. His main scientific achievements were the formulation of a theory of electricity, which introduced positive and negative electricity, and a demonstration of the electrical nature of lightning, which led to the invention of the lightning conductor.
Definition of Franklin, Benjamin in:
- The British & World English dictionary