A 'jiffy' is a real unit of time — 1/100th of a second in electronics, or 3×10⁻²⁴ seconds in physics.

Gravitational waves were detected a century after Einstein predicted them.

Fact #1607 · Science

The door-in-the-face technique uses large requests to gain smaller agreements.

Fact #1502 · Science

The discovery of blood types improved transfusion safety.

Fact #1226 · Science

The polio vaccine drastically reduced cases worldwide.

Fact #1193 · Science

The Stanford marshmallow experiment studied delayed gratification.

Fact #1494 · Science

The Michelson-Morley experiment influenced Einstein's theory of relativity.

Fact #1034 · Science

Some metals such as mercury are liquid at room temperature.

Fact #106 · Science

The Earth's atmosphere scatters sunlight.

Fact #322 · Science