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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 light bulb commonly used since the early 20th century for general-purpose lighting applications, with a pear-like shape and an Edison screw base, is referred to as an "A-series light bulb." This most common general purpose bulb type would be classed as "A19/E26" or the metric version "A60/E27".
Philips Lighting ceased research on compact fluorescents in 2008 and began devoting the bulk of its research and development budget to solid-state lighting such as LED lighting. [17] The rise of LED lighting, however, significantly affected CFL sales and production. As a result of decreasing cost and better features, customers increasingly ...
Lamp bulbs with dual carbon filaments were built as early as 1902 to allow adjustable lighting levels. [1] Certain compact fluorescent lamp bulbs are designed to replace 3-way incandescent bulbs, [2] and have an extra contact and circuitry to dim to a similar light level. In recent years, LED 3-way bulbs have become available as well. [3]
Downing Street and the Foreign Office are preparing to offer the incoming U.S. president an invitation once he is back in the White House, the report said, without citing specific sourcing. The ...
A common dual dimmer module used in stage lighting A dimmer. A dimmer is a device connected to a light fixture and used to lower the brightness of the light.By changing the voltage waveform applied to the lamp, it is possible to lower the intensity of the light output.
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