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  2. List of solar storms - Wikipedia

    en.wikipedia.org/wiki/List_of_solar_storms

    X1.2(X1.3)-class flares [93] and X4.5-class flare. [94] The flares with a magnitude of 6–7 occurred between 30 April and 4 May 2024. On 5 May the strength of the solar storm reached 5 points, which is considered strong according to the K-index. The rapidly growing sunspot AR3663 became the most active spot of the 25th solar cycle.

  3. Flare (countermeasure) - Wikipedia

    en.wikipedia.org/wiki/Flare_(countermeasure)

    A flare or decoy flare is an aerial infrared countermeasure used by an aircraft to counter an infrared homing ("heat-seeking") surface-to-air missile or air-to-air missile. Flares are commonly composed of a pyrotechnic composition based on magnesium or another hot-burning metal, with burning temperature equal to or hotter than engine exhaust.

  4. Solar flare - Wikipedia

    en.wikipedia.org/wiki/Solar_flare

    Solar flares were first observed by Richard Carrington and Richard Hodgson independently on 1 September 1859 by projecting the image of the solar disk produced by an optical telescope through a broad-band filter. [50] [51] It was an extraordinarily intense white light flare, a flare emitting a high amount of light in the visual spectrum. [50]

  5. Satellite flare - Wikipedia

    en.wikipedia.org/wiki/Satellite_flare

    Satellite flare, also known as satellite glint, is a satellite pass visible to the naked eye as a brief, bright "flare". It is caused by the reflection toward the Earth below of sunlight incident on satellite surfaces such as solar panels and antennas (e.g., synthetic aperture radar ).

  6. List of military headstamps - Wikipedia

    en.wikipedia.org/wiki/List_of_military_headstamps

    Later, the 2-digit year is in the 12 o'clock position and a digit in the 6 o'clock position on the headstamp indicated the load identification code. A Factory A, Pretoria Metal Pressings. – Pretoria, South Africa. B Factory B, Pretoria Metal Pressings. – Kimberly, South Africa. LA Luther Annexe, Pretoria Metal Pressings.

  7. Flare - Wikipedia

    en.wikipedia.org/wiki/Flare

    A flare, also sometimes called a fusée, fusee, or bengala, [1] [2] bengalo [3] in several European countries, is a type of pyrotechnic that produces a bright light or intense heat without an explosion. Flares are used for distress signaling, illumination, or defensive countermeasures in civilian and military applications. Flares may be ground ...

  8. Solar cycle 25 - Wikipedia

    en.wikipedia.org/wiki/Solar_cycle_25

    On 29 November, an M4.4 flare, the strongest of the cycle to date, took place, possibly indicating that the solar cycle would be more active than initially thought. [ 33 ] On 8 December, a small coronal mass ejection was found heading directly towards Earth shortly after a strong C-class solar flare, hitting the planet on 9–10 December and ...

  9. Piping and instrumentation diagram - Wikipedia

    en.wikipedia.org/wiki/Piping_and_instrumentation...

    The identifications consist of up to 5 letters. The first identification letter is for the measured value, the second is a modifier, 3rd indicates passive/readout function, 4th - active/output function, and the 5th is the function modifier. This is followed by loop number, which is unique to that loop.