Lesson #24

Lesson #24
E.Q: What is the historical background of electricity?

Around
600 BC

Thales, a Greek, found that when amber was rubbed with silk, it became electrically charged and attracted objects. He had originally discovered static electricity.

1600

William Gilbert (England) first coined the term electricity from elektron, the Greek word for amber. Gilbert wrote about the electrification of many substances. He was also the first person to use the terms electric force, magnetic pole, and electric attraction.

1660

Otto von Guericke (Germany) described and demonstrated a vacuum, and then invented a machine that produced static electricity. Robert Boyle (Ireland) discovered that electric force could be transmitted through a vacuum and observed attraction and repulsion.

1675

Stephen Gray (England) distinguished between conductors and nonconductors of electrical charges.

1745–46

Georg Von Kleist (Germany) developed the first electric capacitator, a device for storing electricity. Pieter van Musschenbroek (the Netherlands) independently developed an electric capacitator that would be called the Leyden jar after the University of Leyden where he worked.

1752

Ben Franklin (United States) tied a key to a kite string during a thunderstorm, and proved that static electricity and lightning were the same thing.

1800

Alessandro Volta (Italy) invented the first electric battery. The term volt is named in his honor.

1808

Sir Humphry Davy (England) invented the first effective lamp. The arc lamp was a piece of carbon that glowed when connected by wires to a battery.

1820

Separate experiments by Hans Christian Oersted (Denmark), Andre-Marie Ampere (France), and Francois Arago (France) confirmed the relationship between electricity and magnetism.

1821

Michael Faraday (England) discovered the principle of electro-magnetic rotation that would later be the key to developing the electric motor.

Time to take notes from Faraday's journey

Open Ended

States 3 important facts from the videos - Michael Faraday/Cosmos.

Fill in the Blanks

When electrical charges build up on the surface of an object,

occurs.

Open Ended

Name 3 scientist and their contribution to electricity.

Fill in the Blanks

Objects with like charges push against, or

, each other.

Fill in the Blanks

Objects with unlike charges pull toward, or

, each other.