Benjamin Franklin invented Electricity.

Benjamin Franklin was an American polymath who made significant contributions to various fields such as science, politics, and writing. One of his most notable inventions is electricity.

Early Experiments with Electricity:
- Franklin began his experiments with electricity in the mid-18th century. He conducted numerous experiments and observations to understand the nature of electricity and how it could be harnessed for practical use.
- One of his famous experiments involved flying a kite during a storm to prove that lightning is an electrical discharge. He attached a metal key to the kite's string and observed that it attracted electricity from the lightning, thus demonstrating the connection between lightning and electricity.

Discovery of Positive and Negative Charges:
- Franklin's experiments led him to propose the theory of positive and negative charges. He suggested that there are two types of electrical charges: positive and negative.
- He hypothesized that objects with opposite charges attract each other, while objects with the same charge repel each other. This theory laid the foundation for understanding the behavior of electricity.

Invention of the Lightning Rod:
- One of Franklin's most practical inventions related to electricity was the lightning rod. He designed and developed the lightning rod as a means to protect buildings from lightning strikes.
- A lightning rod is a metal rod mounted on top of a building and connected to the ground. It provides a path for lightning to follow, preventing it from damaging the structure and instead directing it safely into the ground.

Impact and Legacy:
- Franklin's experiments and discoveries in the field of electricity laid the groundwork for future advancements in electrical science and technology.
- His work influenced other scientists and inventors, such as Alessandro Volta, who later invented the first electric battery.
- Franklin's contributions to the understanding of electricity also had a significant impact on the development of electrical power systems, which are now essential for modern society.

In conclusion, Benjamin Franklin's experiments and inventions in the field of electricity played a crucial role in advancing our understanding of this natural phenomenon. His work laid the foundation for future discoveries and innovations in electrical science and technology.