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A horse behind a vinyl fence of flexible "rail" and coated wire. A synthetic fence, plastic fence or (when made of vinyl) vinyl or PVC fence is a fence made using synthetic plastics, such as vinyl , polypropylene, [1] nylon, [2] polythene (polyethylene) ASA, or from various recycled plastics. Composites of two or more plastics can also be used ...
Invisible Fence Inc. (commonly referred to as Invisible Fence Brand) is a company that designs radio pet fences for cats and dogs. Manufactured and distributed by Radio System Corporation, the company sells wireless and fenceless systems that were first introduced in 1973. [ 1 ]
A veranda (also spelled verandah in Australian and New Zealand English) is a roofed, open-air hallway or porch, attached to the outside of a building. [ 1 ] [ 2 ] A veranda is often partly enclosed by a railing and frequently extends across the front and sides of the structure.
A practical spark gap transmitter consists of these parts: [11] [13] [14] [15] A high-voltage transformer, to transform the low-voltage electricity from the power source, a battery or electric outlet, to a high enough voltage (from a few kilovolts to 75-100 kilovolts in powerful transmitters) to jump across the spark gap. The transformer ...
Station G was an Omega transmitter that used an umbrella antenna carried by a 432 metres (1,417 ft) tall grounded lattice steel guyed mast. Unlike many of the other Omega Transmitters, Woodside was not a "hot tower," that is, one which is insulated from a ground connection by large ceramic insulators that support the entire weight of the structure.
The AN/FPS-133 Air Force Space Surveillance System, colloquially known as the Space Fence, was a U.S. government multistatic radar system built to detect orbital objects passing over America. It is a component of the U.S. space surveillance network , and according to the U.S. Navy was able to detect basketball sized (75 cm (30 in)) objects at ...