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Westinghouse Electric was founded by George Westinghouse in Pittsburgh, Pennsylvania, on January 8, 1886. Building on the advancement of AC technology in Europe, [12] the firm became active in developing alternating current (AC) electric infrastructure throughout the United States. The company's largest factories were located in East Pittsburgh ...
A parabolic aluminized reflector lamp (PAR lamp or simply PAR) is a type of electric lamp that is widely used in commercial, residential, and transportation illumination. It produces a highly directional beam. Usage includes theatrical lighting, locomotive headlamps, aircraft landing lights, and residential and commercial recessed lights ("cans ...
klieglbros .com. An illustration from Kleigl Brothers' 1922 catalog, depicting portable lighting equipment used at Lasky Hollywood Studios. Kliegl Brothers Universal Electric Stage Lighting Company was an American manufacturer of electrical stage lighting products in the 20th century. The company had a significant influence in the development ...
Light can be used to transmit data and analog signals. For example, lighting white LEDs can be used in systems assisting people to navigate in closed spaces while searching necessary rooms or objects. [209] Assistive listening devices in many theaters and similar spaces use arrays of infrared LEDs to send sound to listeners' receivers.
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A lighting control system incorporates communication between various system inputs and outputs related to lighting control with the use of one or more central computing devices. Lighting control systems are widely used on both indoor and outdoor lighting of commercial, industrial, and residential spaces. Lighting control systems are sometimes ...
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