What Is the Function of a Lightning Rod?

A lightning rod conducts a positive charge up to meet the negative charge of a lightning strike, allowing the strike to hit the rod and travel through attached wires to an underground connection. This diverts the strike away from a building, preventing or lessening potential damage, according to About.com.

To be most effective, the rods should be placed on the tallest parts of the building. The rods are about 12 inches tall, 3/8 inches in diameter and made of aluminum or copper. Contrary to popular myth, lightning rods do not attract lightning, but merely dispel the strikes, according to Modern Lightning Protection, an installation company.

History

The History of Independence Day in the U.S.

World View

This Year We’re Skipping the Fireworks, and Other 4th of July Safety Tips

History

Why Was the Declaration of Independence Written?

History

58 Years Later: What Was the Civil Rights Act of 1964?

History

Facts About the Louisiana Purchase That Might Surprise You

History

Celebrating Disability Pride Month and the History of the ADA