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  2. List of LED failure modes - Wikipedia

    en.wikipedia.org/wiki/List_of_LED_failure_modes

    Reverse bias: Although the LED is based on a diode junction and is nominally a rectifier, the reverse-breakdown mode for some types can occur at very low voltages and essentially any excess reverse bias can cause immediate degradation, and may lead to vastly accelerated failure. 5 V is a typical maximum reverse bias voltage specification for ...

  3. Royal Electrical and Mechanical Engineers - Wikipedia

    en.wikipedia.org/wiki/Royal_Electrical_and...

    The transfer to REME of most of the unit repair responsibilities of other arms (Infantry, Royal Artillery, Royal Armoured Corps etc.). The provision of Light Aid Detachments for certain units that had not possessed them under the old organisation. The provision of new REME workshops to carry out field repairs in RASC transport companies.

  4. Shuji Nakamura - Wikipedia

    en.wikipedia.org/wiki/Shuji_Nakamura

    The principal problem was the difficulty of making strongly p-type GaN. [8] Nakamura drew on the work of another Japanese group led by Professor Isamu Akasaki , who published their method to make strongly p-type GaN by electron-beam irradiation of magnesium-doped GaN; however, this method was not suitable for mass production.

  5. 4 Armoured Close Support Battalion REME - Wikipedia

    en.wikipedia.org/wiki/4_Armoured_Close_Support...

    The battalion was formed in 2000, from the grouping of 9 Armoured Close Support Company, 10 Armoured Company, and 17 Field Support Company. Initially stationed at Prince Philip Barracks in Bordon, the battalion moved to Tidworth Camp in March 2010.

  6. Halo headlights - Wikipedia

    en.wikipedia.org/wiki/Halo_headlights

    Halo headlights were originally designed and first used by BMW on the 2001 BMW 5 Series (E39), a luxury sports sedan which soon entered Car and Driver's "10Best list". This was a breakthrough: halo headlights not only served as daytime running lights , but also created a revolutionary look that gave a sharp stance to a vehicle's front.

  7. 3 Armoured Close Support Battalion REME - Wikipedia

    en.wikipedia.org/wiki/3_Armoured_Close_Support...

    In September 2021, a platoon of 22 troops joined the 4th Armoured CS Battalion REME to provide public duties in London. This was the first time the corps has provided public duties for more than 30 years. [3]

  8. Halo orbit - Wikipedia

    en.wikipedia.org/wiki/Halo_orbit

    A halo orbit is a periodic, three-dimensional orbit associated with one of the L 1, L 2 or L 3 Lagrange points in the three-body problem of orbital mechanics.Although a Lagrange point is just a point in empty space, its peculiar characteristic is that it can be orbited by a Lissajous orbit or by a halo orbit.

  9. Rapier (missile) - Wikipedia

    en.wikipedia.org/wiki/Rapier_(missile)

    Rapier is a surface-to-air missile developed for the British Army to replace their towed Bofors 40/L70 anti-aircraft guns.The system is unusual as it uses a manual optical guidance system, sending guidance commands to the missile in flight over a radio link.