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  2. High-intensity discharge lamp - Wikipedia

    en.wikipedia.org/wiki/High-intensity_discharge_lamp

    HID lamps are used in high-performance bicycle headlamps, as well as flashlights and other portable lights, because they produce a great amount of light per unit of power. As the HID lights use less than half the power of an equivalent tungsten-halogen light, a significantly smaller and lighter-weight power supply can be used. HID lamps have ...

  3. Metal-halide lamp - Wikipedia

    en.wikipedia.org/wiki/Metal-halide_lamp

    It is a type of high-intensity discharge (HID) gas discharge lamp. [1] Developed in the 1960s, they are similar to mercury vapor lamps, [1] but contain additional metal halide compounds in the quartz arc tube, which improve the efficiency and color rendition of the light. The most common metal halide compound used is sodium iodide. Once the arc ...

  4. Hydrargyrum medium-arc iodide lamp - Wikipedia

    en.wikipedia.org/wiki/Hydrargyrum_medium-arc...

    Similar to fluorescent lights, HMIs present problems with color temperature when used for film or video lighting applications.Unlike incandescent-lighting units, which are blackbody radiators limited to a theoretical maximum of 3680 K (the melting point of tungsten), HMI lamps, like all gas discharge lighting, emit the emission spectral lines of its constituent elements, specifically chosen so ...

  5. Bicycle lighting - Wikipedia

    en.wikipedia.org/wiki/Bicycle_lighting

    Red light on the back of a bicycle Early bicycle lighting: candle lamps, oil lamps and carbide lamps Early bicycle lamps and two early bottle dynamos (1935). Bicycle lighting is illumination attached to bicycles whose purpose above all is, along with reflectors, to improve the visibility of the bicycle and its rider to other road users under circumstances of poor ambient illumination.

  6. Required vaccines for school in NY: Which ones are needed ...

    www.aol.com/required-vaccines-school-ny-ones...

    Here’s what you should know about school vaccines in New York, including which vaccinations kids need to get and expert tips on flu and COVID-19 shots, which are recommended but not required for ...

  7. Georgia school shooting suspect kept gun in backpack, hid in ...

    www.aol.com/news/georgia-school-shooting-suspect...

    MORE: Georgia school shooting suspect's mom says son texted her that morning, saying, 'I'm sorry' The morning of the shooting, Gray asked his teacher for permission to go to the front office and ...

  8. List of vehicles with hidden headlamps - Wikipedia

    en.wikipedia.org/wiki/List_of_vehicles_with...

    The following is a list of vehicles that feature hidden headlamps (also called pop-up headlights). [1] The vast majority of hidden headlamps are on cars, however, there are a handful of vehicles included in the list that do not fit this category.

  9. Elementary school principal hid cameras, recorded students in ...

    www.aol.com/elementary-school-principal-hid...

    He “will spend the rest of his life in prison,” a U.S. attorney in Mississippi said.

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