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1. www.nationalgeographic.com › science › articleInventor Turned Up Energy Savings by Dimming the Lights

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   Jun 6, 2010 · Joel Spira was aiming for mood lighting when he invented the solid-state light dimmer switch. More than 50 years later, his company, Lutron, is recognized as an energy efficiency pioneer.

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     4:41

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     Lutron: A History of Innovation

     7 Jun 2013

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     Lutron founder Joel Spira remembered on CBS News Sunday Morning

     19 Apr 2015

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     2:54

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     The Story of Energy

     5 Dec 2018

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3. en.wikipedia.org › wiki › Joel_Spira_(businessman)Joel Spira (businessman) - Wikipedia

   en.wikipedia.org › wiki › Joel_Spira_(businessman)

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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.

4. www.npr.org › 2015/10/24 › 451170011A Light Bulb Moment: How The Dimmer Switch Set Lusts Ablaze

   www.npr.org › 2015/10/24 › 451170011

   Oct 24, 2015 · It was in 1959, tinkering in his Manhattan apartment, that Spira came up with a device that helped change the very way humans see each other: the dimmer switch. It was a new type of transistor...

5. assets.lutron.com › a › documents50 years of history and innovation

   assets.lutron.com › a › documents

   The first infrared, remote control dimmer. In 1989, Joel Spira made it simple to control lights from a bed or a favorite chair. The RanaX dimmer gave users the ability to wirelessly (via an infrared remote) turn their lights on, off, or to the perfect light level without leaving their chair or bed.

6. www.nytimes.com › 2015/04/15 › businessJoel Spira, Physicist Who Softened the Lights in Homes ...

   www.nytimes.com › 2015/04/15 › business

   Apr 15, 2015 · Mr. Spira’s idea was to replace a rheostat, which controlled the current flow in an industrial dimmer by absorbing electrical energy on its way to a light source, with a thyristor, a type of...

7. www.architectmagazine.com › technology › lightingThe Solid-State Electronic Dimmer - Architect Magazine

   www.architectmagazine.com › technology › lighting

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   Dec 6, 2016 · Seeing how the SCR could harness a lot of power, he wondered if it could be used to control an incandescent lamp. Spira went on to create the first electronic solid-state dimmer in 1959 and established Lutron Electronics in 1961 to sell his invention.

8. People also ask

   How did Joel Spira save energy?

   • Joel Spira wasn’t thinking much about saving energy when he began experimenting with the idea of interrupting the flow of electricity to a light bulb. It was the late 1950s, and not only were Americans buying lots of new homes, they were hosting dinner parties with mood music.

   Inventor Turned Up Energy Savings by Dimming the Lights

   www.nationalgeographic.com/science/article/100604-energy-electric-light-dimmer-inventor

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   Who was Joel Spira?

   • Joel Spira in 2010, when one of his first light dimmers was donated to the Smithsonian Institution. Brendan Hoffman/Getty Images for Lutron Joel Spira, who changed the ambience of homes around the world and encouraged romantic seductions of all types when he invented the first lighting dimmer for domestic use, died on April 8 in Coopersburg, Pa.

   Joel Spira, Physicist Who Softened the Lights in Homes Everywhere, Dies

   www.nytimes.com/2015/04/15/business/joel-spira-physicist-who-softened-the-lights-in-homes-everywhere-dies-at-88.html

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   Why is Spira interested in light?

   • Spira has always been interested in light. He is fascinated by the physics of light, its psychological and emotional effects and the informational characteristics. A number of years ago, someone showed him a solid-state device called a silicon controlled rectifier (SCR), which is the size of a large pea.

   50 years of history and innovation - Lutron Electronics Company Inc

   assets.lutron.com/a/documents/lutron history_innovation.pdf

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   How did Spira change a dimmer?

   • Mr. Spira’s idea was to replace a rheostat, which controlled the current flow in an industrial dimmer by absorbing electrical energy on its way to a light source, with a thyristor, a type of transistor that interrupted the flow of power to the light. The change made the dimmers cooler and small enough to fit in a home wall box.

   Joel Spira, Physicist Who Softened the Lights in Homes Everywhere, Dies

   www.nytimes.com/2015/04/15/business/joel-spira-physicist-who-softened-the-lights-in-homes-everywhere-dies-at-88.html

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   Who was Lutron Joel Spira?

   • Brendan Hoffman/Getty Images for Lutron Joel Spira, who changed the ambience of homes around the world and encouraged romantic seductions of all types when he invented the first lighting dimmer for domestic use, died on April 8 in Coopersburg, Pa. He was 88. He had a heart attack and collapsed at his home, his daughter Susan Hakkarainen said.

   Joel Spira, Physicist Who Softened the Lights in Homes Everywhere, Dies

   www.nytimes.com/2015/04/15/business/joel-spira-physicist-who-softened-the-lights-in-homes-everywhere-dies-at-88.html

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   How did Spira become famous?

   • Spira became—as a result of his discovery—best known for his initial, seminal invention: the first successful solid state-electronic dimmer. He filed for a patent on July 15, 1959 (U.S. 3,032,688).

   Joel Spira (businessman) - Wikipedia

   en.wikipedia.org/wiki/Joel_Spira_(businessman)

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9. radianthistory.com › joel-spira-the-man-who-madeJoel Spira: The Man Who Made Dimming Light in Your Home ...

   radianthistory.com › joel-spira-the-man-who-made

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   Spira wasn’t the first person to build a dimming device that could control the intensity of light, but he did revolutionize the way we control light in our homes with a special solid state semiconductor switch that could fit in an electrical box to be practical, safe and easy to operate.