Lightning Rod, Glass Harmonica, Swivel Chair

Over 400,000 people have been killed by lightning. Benjamin Franklin noticed static electricity sparks looked like lightning. Benjamin Franklin invented the lightning rod. The lightning rod is a metal stick that is at least 12 inches tall. It goes on top of buildings, churches, and houses.

Benjamin Franklin was born in Boston in 1706. Benjamin Franklin was an inventor. He invented the lightning rod. He invented the lightning rod after learning of the Liden jar and studying electricity. 

Benjamin Franklin's instrument produced a sweet sound. Benjamin Franklin invented the glass harmonica. It sat on its side and spun using a foot pedal. Thousands had been sold by the time Franklin died in 1790.

Thomas Jefferson was born in Virginia in 1743. Thomas Jefferson invented the swivel chair. The swivel chair is a chair with wheels. The swivel choir is in lots of offices.