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2. Multiway switching - Wikipedia

   en.wikipedia.org/wiki/Multiway_switching

   In contrast to a simple light switch, which is a single pole, single throw (SPST) switch, multiway switching uses switches with one or more additional contacts and two or more wires are run between the switches. When the load is controlled from only two points, single pole, double throw (SPDT) switches are used.

3. Dimmer - Wikipedia

   en.wikipedia.org/wiki/Dimmer

   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.

4. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   Two light switches in one box. The switch on the right is a dimmer switch. The switch box is covered by a decorative plate. The first light switch employing "quick-break technology" was invented by John Henry Holmes in 1884 in the Shieldfield district of Newcastle upon Tyne. [1]

5. Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Ceiling_fan

   This was a dial mounted either on the body of the fan or in a gang box at the wall, and when turned in either direction, continuously varied the speed at which the blades rotated—similar to a dimmer switch for a light fixture. A few fans substituted a rotary click-type switch for the infinite-speed dial, providing a set number of set speeds ...

6. TRIAC - Wikipedia

   en.wikipedia.org/wiki/TRIAC

   Typical use as a dimmer Low-power TRIACs are used in many applications such as light dimmers , speed controls for electric fans and other electric motors , and in the modern computerized control circuits of many household small and major appliances .

7. Ticket sold in California has won the estimated $1.22 billion ...

   www.aol.com/finance/looking-christmas-gift...

   One Mega Millions ticket sold in California has just won Friday’s estimated $1.15 billion jackpot – believed to be the fifth-largest prize in the history of the game, the lottery says.