by-pass valve
61Electronic amplifier — A practical amplifier circuit An electronic amplifier is a device for increasing the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In… …
62circulation — circulable /serr kyeuh leuh beuhl/, adj. /serr kyeuh lay sheuhn/, n. 1. an act or instance of circulating, moving in a circle or circuit, or flowing. 2. the continuous movement of blood through the heart and blood vessels, which is maintained… …
63gasoline engine — Most widely used form of internal combustion engine, found in most automobiles and many other vehicles. Gasoline engines vary significantly in size, weight per unit of power generated, and arrangement of components. The principal type is the… …
64Glossary of firefighting equipment — Note: This list is incomplete. You can help Wikipedia by [http://en.wikipedia.org/w/index.php?title=Glossary of firefighting equipment action=edit adding to it] . 0 9 * 1 3/4 inch hose: see attack hose * 2 1/2 inch hose: see attack hose , supply… …
65Boiler — For the Limp Bizkit song, see Boiler (song). A portable boiler (preserved, Poland) …
66Hydraulic analogy — The electronic–hydraulic analogy (derisively referred to as the drain pipe theory by Oliver Heaviside) is the most widely used analogy for electron fluid in a metal conductor. Since electric current is invisible and the processes at play in… …
67Left 4 Dead 2 — Cover art for Left 4 Dead 2 Developer(s) Valve Corporation Turtle Rock Studios[1] …
68Lock (water transport) — Canal lock and lock keeper s cottage on the Aylesbury Arm of the Grand Union Canal at Marsworth in Hertfordshire, England …
69Hydration system — In recreation and other sustained outdoor activities, a hydration system is an apparatus intended to promote its user s drinking enough liquid to support the physical effort involved in the activity. Such systems for consumers were first sold to… …
70Organ — • A musical instrument which consists of one or several sets of pipes, each pipe giving only one tone, and which is blown and played by mechanical means. Catholic Encyclopedia. Kevin Knight. 2006. Organ Organ …
