constant-pressure operation
71Automag (paintball marker) — The Automag is a paintball marker designed by Tom Kaye and produced by Airgun Designs, Inc. It bears the distinction of being the first semi automatic marker ever to win a paintball tournament. Team Swarm used Automags in their victory at the… …
72hydrosphere — /huy dreuh sfear /, n. the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere. [1885 90; HYDRO 1 + SPHERE] * * * Discontinuous layer of water at or near the Earth s surface. It… …
73Lenoir cycle — The Lenoir cycle is an idealised thermodynamic cycle often utilized to model a pulse jet engine. It is based on the operation of an engine patented by Jean Joseph Etienne Lenoir in 1860. This engine is often thought of as the first commercially… …
74Refrigeration — Commercial refrigeration Ice is used to refriger …
75Psychrometrics — or psychrometry are terms used to describe the field of engineering concerned with the determination of physical and thermodynamic properties of gas vapor mixtures. The term derives from the Greek psuchron (ψυχρόν) (… …
76diesel engine — a compression ignition engine in which a spray of fuel, introduced into air compressed to a temperature of approximately 1000° F (538° C), ignites at a virtually constant pressure. Also called diesel. [1890 95] * * * Internal combustion engine in …
77Measurement microphone calibration — In order to take a scientific measurement with a microphone, its precise sensitivity must be known (in volts per Pascal). Since this may change over the lifetime of the device, it is necessary to regularly calibrate measurement microphones. This… …
78Heat engine — Thermodynamics …
79Otto cycle — A thermodynamic cycle for the conversion of heat into work, consisting of two isentropic phases interspersed between two constant volume phases. It is the four stroke cycle of operation that produces the power within the cylinders of an internal… …
80Deuterium — Hydrogen 2 Full table General Name, symbol deuterium, 2H or D Neutrons 1 …
