Abbreviation of Kinetic Energy, the energy that a body possesses solely because it is moving.
Keir Metal
Brass containing 55% copper, 40% zinc and 5% iron. Patented in 1779 by James Keir (Chemist, Geologist, Industrialist and Inventor) and used for the manufacture of window frames.

The kelvin is the unit of thermodynamic temperature.
Kelvin Wedge
For waves in the wake of a boat (gravity waves). In this case the wedge semi-angle is independent of the speed of the body.
Kelvin, William Thomson
British physicist known for his pioneering work in thermodynamics and electricity.
Kelvin-Planck statement
No process is possible whose sole result is the absorption of heat from a reservoir and the conversion of all of this heat into work.
Kepler, Johannes
German astronomer and mathematics teacher who formulated laws that formed the groundwork of Newton′s discoveries, and are the starting point of modern astronomy.
Keplers Laws
Kepler found three laws defining the orbit of planets.
The space from which metal has been removed by a cutting process.
Kerr Black Hole
A rotating black hole.
Kerr Cell
A Kerr Cell is most commonly used as a Q-Switch device in pulsed lasers
Kerr Effect
The ability of certain substances to differently refract light waves whose vibrations are in different directions when the substance is placed in an electric field.
Compunds containing a carbonyl group (-CO-) attached to two hydrocarbon radicals. The simplest ketone is acetone (CH3COCH3).
A simple monosaccharide in which the carbonyl group is a ketone.
A metabolic condition in which the concentration of ketone bodies in the blood, tissues, and urine is abnormally high.
Abbreviation of kilo electron volts, one thousand electron volts.
An element used to connect a rotating machine element to a shaft.
Key Clicks
Interference in the form of "clicks" or "thumps" caused by the sudden application or removal of power.
An input device, partially modeled after the typewriter keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches.
Keyed Joint
A joint in which one structural member is keyed or notched into an adjoining member as in timber construction.
The central stone in an arch, and begins the distribution of the vertical load forces down and around the arch.