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.
Benjamin Franklin was inspired to invent the lightning rod to protect homes from the damaging fires caused by lightning strikes. Lightning rods and conductors attract the electricity generated by a lightning strike. Conductive wires and electrodes attached to the lightning rod direct the electricity safely to the grounding rod or ground.Learn More
Thomas Edison's favorite invention was the phonograph. Edison invented the phonograph in 1877. It was through his efforts to improve the telephone and telegraph that he conceived the idea to record sound on tinfoil-coated cylinders.Full Answer >
Hippassus of Meropontum discovered irrational numbers in the fifth century B.C., when he developed the Pythagorean theorum for right triangles and discovered that hypotenuse length could not always be expressed as a rational number. The Euclidean proof of irrational numbers did not appear until 300 years later.Full Answer >
To use Velcro rollers, wash and condition your hair, use anti-frizz serum, divide your hair into sections and then apply one roller to each section of hair. Leave the rollers in your hair for at least an hour.Full Answer >
Alexander Graham Bell is recognized as the inventor of the telephone, although the inventors Elisha Gray and Antonio Meucci made vast contributions to its development. Bell and Elisha Gray independently created their own versions of the telephone, although Bell was narrowly able to patent his invention before Gray.Full Answer >