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  2. Light-emitting diode - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode

    Switch on time: LEDs light up extremely quickly. A typical red indicator LED achieves full brightness in under a microsecond. [69] LEDs used in communications devices can have even faster response times. Focus: The solid package of the LED can be designed to focus its light. Incandescent and fluorescent sources often require an external ...

  3. 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

  4. Precision approach path indicator - Wikipedia

    en.wikipedia.org/wiki/Precision_Approach_Path...

    The PAPI can be seen to the right (non-standard) side of the runway. The aircraft is slightly below the glideslope. A precision approach path indicator (PAPI) is a system of lights on the side of an airport runway threshold that provides visual descent guidance information during final approach. It is generally located on the left-hand side of ...

  5. Thermal management of high-power LEDs - Wikipedia

    en.wikipedia.org/wiki/Thermal_management_of_high...

    Briefly speaking, the LED die is assembled face down on the sub-mount, which is usually silicon or ceramic, acting as the heat spreader and supporting substrate. The flip-chip joint can be eutectic, high-lead, lead-free solder or gold stub. The primary source of light comes from the back side of the LED chip, and there is usually a built-in ...

  6. Wife of Cleveland Browns Player Slams Steelers Fans for ... - AOL

    www.aol.com/wife-cleveland-browns-player-slams...

    The wife of Cleveland Browns offensive lineman Wyatt Teller is calling out Pittsburgh Steelers fans for their 'very sad behavior' towards her during the teams' matchup on Sunday, Dec. 8.

  7. Do you overplan the holidays? You might be missing the point

    www.aol.com/overplan-holidays-might-missing...

    The last few weeks of the year can be a busy and stressful time. Here’s how to focus on what really matters this holiday season, according to experts.

  8. Electronic component - Wikipedia

    en.wikipedia.org/wiki/Electronic_component

    Light-emitting diode (LED) – a diode that emits light; Photodiode – passes current in proportion to incident light Avalanche photodiode – photodiode with internal gain; Solar Cell, photovoltaic cell, PV array or panel – produces power from light; DIAC (diode for alternating current), Trigger Diode, SIDAC) – often used to trigger an SCR

  9. A woman killed her look-alike to fake her own death ... - AOL

    www.aol.com/woman-killed-her-lookalike-fake...

    A woman in Germany was sentenced to life in prison for murdering her "doppelgänger" in 2022. The victim's family in Algeria found out about the verdict three weeks later.