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121Lithium — (pronEng|ˈlɪθiəm) is a chemical element with the symbol Li and atomic number 3. It is a soft alkali metal with a silver white color. Under standard conditions, it is the lightest metal and the least dense solid element. Like all alkali metals,… …
122Contact lens — Contacts redirects here. For the software application, see Address book. A pair of contact lenses, positioned with the concave side facing upward …
123Poppet valve — A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide. In most… …
124Miss Veedol — This monument in Misawa commemorates the flight of Miss Veedol. The Miss Veedol was the first airplane to fly non stop across the Pacific Ocean. On October 5, 1931, Clyde Pangborn with co pilot Hugh Herndon crash landed the plane in the hills of… …
125Electric actuator — Actuators are used for the automation of industrial valves and can be found in all kinds of technical process plants: they are used in wastewater treatment plants, power plants and even refineries. This is where they play a major part in… …
126Masturbation — Onanism redirects here. For the Biblical origin of the term onanism , see Onan. Gustav Klimt s Woman seated with thighs apart (1916) …
127National Aviation University — Національний авіаційний університет Motto Vivere! Vincecre! Creare! Motto in English Live! Create! Overcome! …
128Birth control — For other uses, see Birth control (disambiguation). Birth control is an umbrella term for several techniques and methods used to prevent fertilization or to interrupt pregnancy at various stages. Birth control techniques and methods include… …
