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2. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   A UK illuminated rocker switch in the off position Illuminated switches incorporate a small neon lamp or LED , allowing the user easily to locate the switch in the dark. Household illuminated switches were introduced in the mid-1950s.

3. Power symbol - Wikipedia

   en.wikipedia.org/wiki/Power_symbol

   Power On (IEC 60417-5007) and Power Off (IEC 60417-5008) symbols are used to indicate positions of the rocker switch Power button marked with Standby symbol (IEC 60417-5009) turns the device on or off without fully disconnecting power supply. A power symbol is a symbol indicating that a control activates or deactivates a particular device.

4. Switch - Wikipedia

   en.wikipedia.org/wiki/Switch

   Switches can be designed to respond to any type of mechanical stimulus: for example, vibration (the trembler switch), tilt, air pressure, fluid level (a float switch), the turning of a key , linear or rotary movement (a limit switch or microswitch), or presence of a magnetic field (the reed switch). Many switches are operated automatically by ...

5. John Henry Holmes - Wikipedia

   en.wikipedia.org/wiki/John_Henry_Holmes

   Developing technology behind the modern light switch John Henry Holmes (1857 – 1935) was an English electrical engineer , inventor, Quaker and pioneer of electric lighting who invented the quick break light switch, the technology behind which remains the basis for modern wall mounted light switches .

6. Rocker switch - Wikipedia

   en.wikipedia.org/?title=Rocker_switch&redirect=no

   This page was last edited on 29 June 2005, at 00:30 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...

7. Doctors Say This Viral "Sleep Rule" Actually Works - AOL

   www.aol.com/lifestyle/doctors-viral-sleep-rule...

   TikTok is filled with tips and tricks — some legitimate, many not — to help you sleep better.One of the latest encourages people to follow a 10-3-2-1-0 sleep rule, which is actually not just ...