A scale or test used to define hardness in metals, particularly steel and titanium.

Beam delivery in a circular movement for cutting large-diameter holes. (De-focusing the beam for this lowers power density and increases drilling time.)

As used in any American National Standard Institute (ANSI) Z136.x document, the word is to be understood as implementing a mandatory response.

as used in any ANSI Z136.x document the word is to be understood as implementing an advisory response.

The response of a device or material to monochromatic light as a function of wavelength.