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2. Automotive lighting - Wikipedia

   en.wikipedia.org/wiki/Automotive_lighting

   Auxiliary high beam lights may be fitted to provide high-intensity light to enable the driver to see at longer range than the vehicle's high beam headlights. [13] Such lights are most notably fitted on rally cars, and are occasionally fitted to production vehicles derived from or imitating such cars.

3. Emergency light - Wikipedia

   en.wikipedia.org/wiki/Emergency_light

   Modern emergency floodlights provide a high-lumen, wide-coverage light that can illuminate an area quite well. Some lights are halogen, and provide a light source and intensity similar to that of an automobile headlight. Early battery backup systems were huge, dwarfing the size of the lights for which they provided power.

4. High-intensity discharge lamp - Wikipedia

   en.wikipedia.org/wiki/High-intensity_discharge_lamp

   Brand new high-intensity discharge lamps make more visible light per unit of electric power consumed than fluorescent and incandescent lamps, since a greater proportion of their radiation is visible light in contrast to infrared. However, the lumen output of HID lighting can deteriorate by up to 70% over 10,000 burning hours.

5. Headlamp - Wikipedia

   en.wikipedia.org/wiki/Headlamp

   High-intensity discharge lamps (HID) produce light with an electric arc rather than a glowing filament. The high intensity of the arc comes from metallic salts that are vaporized within the arc chamber. These lamps have a higher efficacy than tungsten lamps.

6. Aviation obstruction lighting - Wikipedia

   en.wikipedia.org/wiki/Aviation_obstruction_lighting

   Aircraft warning lights at the Mannheim telecommunications tower, in the background the bright torchlight of a steam cracker, in the distance warning lights from wind turbines Structure using a white strobe Structure using a Red/White Strobe Closeup of an aircraft warning light on top of a highrise in Changzhou, China Structure using high-intensity white lights and a medium-intensity white strobe

7. Electrical ballast - Wikipedia

   en.wikipedia.org/wiki/Electrical_ballast

   The high output frequency of an electronic ballast refreshes the phosphors in a fluorescent lamp so rapidly that there is no perceptible flicker. The flicker index, used for measuring perceptible light modulation, has a range from 0.00 to 1.00, with 0 indicating the lowest possibility of flickering and 1 indicating the highest.