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  2. Signal lamp - Wikipedia

    en.wikipedia.org/wiki/Signal_lamp

    All modern forces have followed suit due to technological advances in digital communications. [9] Signal lamps are still used today for aviation light signals in air traffic control towers as a backup device in case of a complete failure of an aircraft's radio. Light signals can be green, red, or white, and steady or flashing.

  3. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Emergency vehicle lighting, also known as simply emergency lighting or emergency lights, is a type of vehicle lighting used to visually announce a vehicle's presence to other road users. A sub-type of emergency vehicle equipment, emergency vehicle lighting is generally used by emergency vehicles and other authorized vehicles in a variety of colors.

  4. Variations in traffic light operation - Wikipedia

    en.wikipedia.org/wiki/Variations_in_traffic...

    Variations in traffic light operation. Swedish traffic light (left) for use by public transport vehicles only. All signals use white lighting and special symbols ("S", "–" and an arrow) to distinguish them from regular signals. The small light at the top tells the driver when the vehicle's transponder signal is received by the traffic light.

  5. White, brown and pink noise machines are going viral for ...

    www.aol.com/news/white-brown-pink-noise-machines...

    What is the difference between white noise, brown noise and pink noise and do they actually work to improve sleep or relaxation? Experts explain.

  6. Blinkenlights - Wikipedia

    en.wikipedia.org/wiki/Blinkenlights

    In computer jargon, blinkenlights are diagnostic lights on front panels of old mainframe computers. More recently the term applies to status lights of modern network hardware (modems, network hubs, etc.). [1] Blinkenlights disappeared from more recent computers for a number of reasons, the most important being the fact that with faster CPUs a ...

  7. Aviation obstruction lighting - Wikipedia

    en.wikipedia.org/wiki/Aviation_obstruction_lighting

    Aviation obstruction lighting is used to enhance the visibility of structures or fixed obstacles which may conflict with the safe navigation of aircraft. Obstruction lighting is commonly installed on towers, buildings, and even fences located in areas where aircraft may be operating at low altitudes.

  8. Video shows woman rescued from 'precariously dangling' car ...

    www.aol.com/news/video-shows-woman-rescued...

    The crash reportedly occurred after the driver accidentally hit the accelerator "causing her vehicle to break through the garage wall" in Florida.

  9. Nintendo Entertainment System - Wikipedia

    en.wikipedia.org/wiki/Nintendo_Entertainment_System

    Problems with the 10NES lockout chip frequently result in one of the console's most common issues: the blinking red power light, in which the system appears to turn itself on and off repeatedly because the 10NES would reset the console once per second. The lockout chip required constant communication with the chip in the game to work.