Benjamin Franklin invented swim fins, bifocals, the lightning rod, the Franklin stove, the mechanized glass armonica and the "long arm" for reaching books. He created the first map of the Gulf Stream and improved the odometer and the catheter. He also posited the theory that lightning is electricity.Know More
At age 11, Franklin invented swim fins that attached to a swimmer's hands and allowed for faster swimming. He later invented bifocals, a type of eyewear with the upper half for seeing into the distance and the lower half for reading. He also invented the lightning rod to divert lightning to the ground rather than striking houses.
His invention of the Franklin stove, a cast iron furnace, heated colonial homes more effectively. His armonica was an instrument played on a series of different sized glass goblets to create different musical tones. Franklin also created the "long arm," which was a wooden pole he invented to reach books from higher shelves. Stemming from his curiosity about why eastward journeys across the Atlantic Ocean were faster than westward trips, he theorized and was the first to map the Gulf Stream.
Franklin modified the odometer to attach to carriage wheels and calculate distance. He updated the urinary catheter, which drains urine from the bladder, to be flexible and more comfortable. He also discovered that lightning is electricity and that it is fluid, moving between "positive" and "negative" charges.
In addition to his many inventions and discoveries, Franklin was one of the Founding Fathers and helped write the U.S. Constitution. He was a musician and a writer, and he also founded the first library, the first post office and the first college in Pennsylvania.Learn more about Inventions
Benjamin Franklin invented the lightning rod in 1749 while conducting experiments with electricity. Since Franklin’s invention, lightning rods have been mounted on elevated buildings and other tall structures to prevent fire damage and electrocution.Full Answer >
In 1749, Benjamin Franklin invented the lightning rod in North America during the course of his explorations into the nature of electricity. Franklin wrote about his invention known as the "lightning attractor" and the "Franklin rod," outlining its specifications for the protection of homes and sailing vessels, in 1753.Full Answer >
Benjamin Franklin changed the world by helping write the Declaration of Independence and U.S. Constitution, negotiating the end of the Revolutionary War with the Treaty of Paris and becoming the first ambassador of the United States to France. He also had notable achievements as a publisher, author, scientist and inventor.Full Answer >
Benjamin Franklin is best known as one of the Founding Fathers of the United States who helped draft the Declaration of Independence. He is also famous for his scientific work with electricity, writing, painting and diplomatic work.Full Answer >