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Various window blind styles. A window blind is a type of window covering. [1] There are many different kinds of window blinds which use a variety of control systems. A typical window blind is made up of several long horizontal or vertical slats of various types of hard material, including wood, plastic or metal which are held together by cords that run through the blind slats.
Typical dynamic window coverings include automated blinds and automatic shades. Window blinds and shades can be controlled to avoid glare while introducing daylight to the building. The height of the blind and the angle of the slat can be determined by daylighting demand and solar positions (azimuth, altitude).
Plantation shutters, typical of hot lower latitude climates like Florida, South Africa, the Mediterranean or Australia, typically have only two shutters per window and wide louver blades. [ 2 ] Other interior shutters use stationary louvers that do not rotate (fixed louvers); solid raised or flat panels; fabric inserts; or tinted glass.
Panes of glass used for windows. They are either plate or rolled glass, made by pouring the molten glass onto a table having the height of the desired thickness of the plate, and then passing a roller over the top; or blown, or common window glass, the latter being by far the cheapest and most widely used, but of very much inferior quality.
ICE 3 train with view into driver's cab ICE 3 train with glass panel switched to "frosted" mode. Eureka Tower in Melbourne has a glass cube which projects 3 m (10 ft) out from the building with visitors inside, suspended almost 300 m (984 ft) above the ground. When one enters, the glass is opaque as the cube moves out over the edge of the building.
Glass fibers have been produced for centuries, but the earliest patent was awarded to the Prussian inventor Hermann Hammesfahr (1845–1914) in the U.S. in 1880. [3] [4]Mass production of glass strands was accidentally discovered in 1932 when Games Slayter, a researcher at Owens-Illinois, directed a jet of compressed air at a stream of molten glass and produced fibers.
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