Site Glossary

Electromagnetic radiation with wavelengths shorter than visible light.

 the lack of exact knowledge or precision in a measurement or calculation.

often represented by the margin of error or the range within which a measurement or calculation is expected to fall.

A constant rate of decrease in speed.

Motion with constant acceleration.

the constant used in Newton's Law of Universal Gravitation.

Everything that exists, including all matter, energy, space, and time.

The quantity that must be calculated.