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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.
With no applied voltage, the micro-blinds are rolled and let light pass through. When there is a potential difference between the rolled metal layer and the transparent conductive layer, the electric field formed between the two electrodes causes the rolled micro-blinds to stretch out and thus block light.
Drapes can optionally be automated with sensor-based electric motor controls that are aware of room occupancy, daylight, interior temperature, and time of day. Passive solar buildings with no central air conditioning system need control mechanisms for hourly, daily, and seasonal, temperature-and-daylight variations.
Motorized awnings have no vertical supports. Instead, they have retracting lateral arms, creating an unobstructed shaded area. These awnings are operated by an electric motor, generally hidden inside the roller bar of the awning. The arms open and close the awning at the touch of a wireless remote control or a wall-mounted switch.
In addition to producing electric energy, these can create further energy savings due to superior thermal insulation properties and solar radiation control. Photovoltaic Stained Glass : The integration of energy harvesting technologies into homes and commercial buildings has opened up additional areas of research which place greater ...
The electric guitar was a key instrument in the development of musical styles that emerged since the late 1940s, such as Chicago blues, early rock and roll, rockabilly, and 1960s blues rock. Electric guitars are used in almost every popular music genre. [239] U.S. patent #2,089,171 was filed by Beauchamp on June 2, 1934, and issued on August 10 ...
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