Bel
Unit of ratio equal to ten decibels. Named in honor of telecommunications pioneer Alexander Graham Bell.
Unit of ratio equal to ten decibels. Named in honor of telecommunications pioneer Alexander Graham Bell.
A modulation scheme in which data symbols are represented by a shift from one phase to another. See Chapter 10.
The theory that suggests that the universe was formed from a single point in space during a cataclysmic explosion about ...
A system of two stars that revolve around a common center of gravity.
A concentration of mass so dense that nothing not even light can escape its gravitational pull once swallowed up. Many ...
A term used to describe an extra new that occurs in a season. It usually refers to the third new ...
A term used to describe an extra full that occurs in a season. It usually refers to the third full ...
A shift in the lines of an object's spectrum toward the blue end. Blueshift indicates that an object is moving ...
A term used to describe an exceptionally bright meteor. Bolides typically will produce a sonic boom.