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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

   Like other gas-discharge lamps such as the very-similar mercury-vapor lamps, metal-halide lamps produce light by ionizing a mixture of gases in an electric arc.In a metal-halide lamp, the compact arc tube contains a mixture of argon or xenon, mercury, and a variety of metal halides, such as sodium iodide and scandium iodide. [7]

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. Headlamp - Wikipedia

   en.wikipedia.org/wiki/Headlamp

   In a headlamp optic designed for use with an HID lamp, it produces more usable light. Studies have demonstrated drivers react faster and more accurately to roadway obstacles with good HID headlamps compared to halogen ones. [111] Hence, good HID headlamps contribute to driving safety. [112]

6. Bicycle lighting - Wikipedia

   en.wikipedia.org/wiki/Bicycle_lighting

   The lights used by most halogen rechargeable systems were cheap and bright, but fairly simple: they projected a cone of light (wide and narrow beam options were available) which is good for off-road use but not ideal for road use as it can dazzle oncoming road users. This is why halogen lights do not meet legal requirements in some jurisdictions.

7. Bright indicator lights ruining your sleep? You’re not alone ...

   www.aol.com/bright-indicator-lights-ruining...

   LED lighting is an energy-efficient option for manufacturing indicator lights. The light has a long lifespan and doesn’t generate excess heat — important qualities for a technology that’s ...