Energy

Symbol, W. Common units: joule, watthour, and kilowatt-hour. 1. The capacity for doing work. Some common forms of energy are electrical, mechanical, and chemical. 2. The work ...

energy

Energy; Energy efficiency

Several different forms of energy exist, for example potential energy, kinetic energy, thermal energy, and electromagnetic energy. Energy is measured in joule (J) or watt-hours ...

Absorb

Industrial machinery; Laser equipment

To transform radiant energy into a different form accompanied by a rise in temperature.

Absorption Coefficient

Industrial machinery; Laser equipment

Factor describing light's ability to be absorbed per unit of path length.

Accessible Emission

Industrial machinery; Laser equipment

The magnitude of accessible laser (or other collateral) radiation of a specific wavelength or emission duration at a particular point as measured by appropriate methods and ...

Accessible Emission Limit

Industrial machinery; Laser equipment

The maximum accessible emission level limit (AEL) permitted within a particular class. In ANSI Z-136.1, AEL is determined as the product of Accessible Emission times the Maximum ...

Active Medium

Industrial machinery; Laser equipment

Collection of atoms or molecules capable of undergoing stimulated emission at a given wavelength.

Afocal

Industrial machinery; Laser equipment

Literally, "without a focal length"; an optical system with its object and image point at infinity.

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Charles Darwin

Charles Robert Darwin FRS (12 February 1809 – 19 April 1882), an English naturalist. He established that all species of life have descended over time ...