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Joel Solon Spira (March 1, 1927 – April 8, 2015) was an American inventor, entrepreneur, and business magnate.. He invented a version of the light-dimmer switch for use in homes around the United States and led his Lutron Electronics Company into the production of lighting controllers.
The major advantage of a lighting control system over stand-alone lighting controls or conventional manual switching is the ability to control individual lights or groups of lights from a single user interface device. This ability to control multiple light sources from a user device allows complex lighting scenes to be created.
Early 20th c. map published by the Smithsonian Institution Bureau of American Ethnology showing the Cayniabon area under Chief Canobana. The region of what is now Canóvanas belonged to the Taíno region of Cayniabón, also the native name of the Grande de Loiza River, which stretched from the central eastern region of Puerto Rico to the northeast coast of the island. [2]