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  2. Lemon battery - Wikipedia

    en.wikipedia.org/wiki/Lemon_battery

    Note that incandescent light bulbs from flashlights are not used because the lemon battery is not designed to produce enough electric current to light them. Such a battery typically produces 0.001 A (1 mA) of current at a potential difference of 0.7 V; these values are multiplied together to determine the overall power of 0.0007 W (0.7 mW).

  3. GravityLight - Wikipedia

    en.wikipedia.org/wiki/GravityLight

    Martin Riddiford and Jim Reeves worked on GravityLight as a side project for four years. [8] As of 2020, the Deciwatt company was working on its NowLight, a manually-powered mechanical generator which stored its energy in a rechargeable battery. The use of gravity to store energy was now viewed as impractical for consumer needs.

  4. Mechanically powered flashlight - Wikipedia

    en.wikipedia.org/wiki/Mechanically_powered...

    The best designs use a supercapacitor instead of a rechargeable battery, since these have a longer working life than a battery. This, along with the long-life light-emitting diode which does not burn out like an incandescent bulb, give the flashlight a long lifetime, making it a useful emergency light. A disadvantage of many current models is ...

  5. Flashlight - Wikipedia

    en.wikipedia.org/wiki/Flashlight

    Formerly, the light source typically was a miniature incandescent light bulb, but these have been displaced by light-emitting diodes (LEDs) since the early 2000s. A typical flashlight consists of the light source mounted in a reflector, a transparent cover (sometimes combined with a lens ) to protect the light source and reflector, a battery ...

  6. Timeline of lighting technology - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_lighting...

    1875 Henry Woodward patents an electric light bulb. 1876 Pavel Yablochkov invents the Yablochkov candle, the first practical carbon arc lamp, for public street lighting in Paris. 1879 (About Christmas time) Col. R. E. Crompton illuminated his home in Porchester Gardens, using a primary battery of Grove Cells, then a generator which was better ...

  7. C. Crane Company - Wikipedia

    en.wikipedia.org/wiki/C._Crane_Company

    C. Crane Skywave SSB Battery Operated Portable Travel Radio AM, FM, Shortwave, NOAA Weather Alert, Scannable VHF Aviation Band and Single Side Bands. C. Crane is an American electronics retailer based in Fortuna, California. The company mainly deals in specialty radio and lighting equipment and is best known for its GeoBulb line of LED light bulbs.

  8. AOL Mail

    mail.aol.com/d?reason=invalid_cred

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Electric light - Wikipedia

    en.wikipedia.org/wiki/Electric_light

    An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting . Lamps usually have a base made of ceramic , metal, glass, or plastic which secures the lamp in the socket of a light fixture , which is often called a "lamp" as well.

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