The guillotine was named after Dr. Joseph-Ignace Guillotin, who proposed it as a more humane execution method.

The phonograph recorded and replayed sound.

Fact #1573 · General

Repetition can help move information into long-term memory.

Fact #977 · General

Nothing can travel faster than light in a vacuum.

Fact #1777 · General

The city of Jericho is one of the oldest known walled cities.

Fact #1667 · General

In 1978, thousands of people gathered to watch a man attempt to fly using homemade wings.

Fact #779 · General

Sound cannot travel through a vacuum.

Fact #136 · General

First impressions can form within seconds of meeting someone.

Fact #954 · General

Your reality is subjective.

Fact #2311 · General