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  2. 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 ...

  3. Quinceañera - Wikipedia

    en.wikipedia.org/wiki/Quinceañera

    The formal entry (La Entrada) – A grand entrance made by the quinceañera once most guests have been seated. The formal toast (El Brindis)– An optional but usually featured part of the reception, generally initiated by the parents or godparents of the birthday girl.

  4. Incandescent light bulb - Wikipedia

    en.wikipedia.org/wiki/Incandescent_light_bulb

    An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a filament that is heated until it glows. The filament is enclosed in a glass bulb that is either evacuated or filled with inert gas to protect the filament from oxidation. Electric current is supplied to the filament by terminals or wires ...

  5. Electrical engineering - Wikipedia

    en.wikipedia.org/wiki/Electrical_engineering

    Nevertheless, the ability to sketch ideas is still invaluable for quickly communicating with others. The Shadow robot hand system Although most electrical engineers will understand basic circuit theory (that is, the interactions of elements such as resistors , capacitors , diodes , transistors , and inductors in a circuit), the theories ...

  6. Panasonic - Wikipedia

    en.wikipedia.org/wiki/Panasonic

    Panasonic Holdings Corporation [b] is a Japanese multinational electronics company, headquartered in Kadoma, Osaka Prefecture, Japan.It was founded in 1918 as Matsushita Electric Housewares Manufacturing Works [c] in Fukushima, Osaka City by Kōnosuke Matsushita.

  7. Kinetoscope - Wikipedia

    en.wikipedia.org/wiki/Kinetoscope

    An encounter with the work and ideas of photographic pioneer Eadweard Muybridge appears to have spurred Thomas Edison to pursue the development of a motion picture system. On February 25, 1888, in Orange, New Jersey , Muybridge gave a lecture amid a tour in which he demonstrated his zoopraxiscope , a device that projected sequential images ...