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  2. Tally light - Wikipedia

    en.wikipedia.org/wiki/Tally_light

    In a television studio, a tally light (or on air indicator) is a small signal lamp on a professional video camera or monitor. It is usually located just above the lens or on the electronic viewfinder (EVF) and communicates, for the benefit of those in front of the camera as well as the camera operator , that the camera is live (i.e. its signal ...

  3. John Ott - Wikipedia

    en.wikipedia.org/wiki/John_Ott

    Ott believed that the proprietary lighting technology he developed was the closest replication of the Sun's natural wavelengths. He developed several consumer products based on this technology, including altered lightbulbs and a special pair of polarized sunglasses which he believed would enhance the physical and mental fortitude of anyone wearing them.

  4. Electrical ballast - Wikipedia

    en.wikipedia.org/wiki/Electrical_ballast

    It can be incorporated into an existing fluorescent light fixture or mounted remotely outside of it. When power is lost, the ballast will illuminate one or more lamps in the fixture at a reduced output for a minimum of 90 minutes (as required by code). These can be used as an alternative to egress lighting powered by a back-up electrical generator.

  5. Add or disable 2-step verification for extra security - AOL Help

    help.aol.com/articles/2-step-verification...

    6. Scan the QR code using your authenticator app. 7. Click Continue. 8. Enter the code shown in your authenticator app. 9. Click Done. Sign in with 2-step for authenticator app. 1. Sign in to your AOL account with your password. 2. Enter the verification code shown in your authenticator app. 3. Click Verify.

  6. R. E. Dietz Company - Wikipedia

    en.wikipedia.org/wiki/R._E._Dietz_Company

    The company was founded in 1840 when its founder, 22-year-old Robert Edwin Dietz, purchased a lamp and oil business in Brooklyn, New York. Though famous for well-built indoor and outdoor kerosene lanterns, it was a major player in the automotive lighting industry from the 1920s into the 1960s.

  7. Uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Uninterruptible_power_supply

    If a battery has been completely discharged (e.g. the car lights were left on overnight) and next is given a fast charge for only a few minutes, then during the short charging time it develops only a charge near the interface. The battery voltage may rise to be close to the charger voltage so that the charging current decreases significantly.

  8. Induction lamp - Wikipedia

    en.wikipedia.org/wiki/Induction_lamp

    The induction lamp, electrodeless lamp, or electrodeless induction lamp is a gas-discharge lamp in which an electric or magnetic field transfers the power required to generate light from outside the lamp envelope to the gas inside.

  9. Tell-tale (automotive) - Wikipedia

    en.wikipedia.org/wiki/Tell-tale_(automotive)

    A group of tell-tales showing lights for "brake fluid", "stop lamp" and "check engine" Graphical tell-talesA tell-tale, sometimes called an idiot light [1] or warning light, is an indicator of malfunction or operation of a system, indicated by a binary (on/off) illuminated light, symbol or text legend.