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  2. NASA wind turbines - Wikipedia

    en.wikipedia.org/wiki/NASA_wind_turbines

    The Mod-1 was the first wind turbine in the world to produce 2 megawatts and also General Electric's first wind turbine. The Danish da:Vindkraftværket Tvindkraft with a hub height of 46 meters above the ground, a larger rotor and a rating at a higher wind speed, had a capacity of 2000 kW but never achieved 2 MW power output of the Mod-1.

  3. Mark 38 25 mm machine gun system - Wikipedia

    en.wikipedia.org/wiki/Mark_38_25_mm_Machine_Gun...

    Mods 23: Remotely operated with EO/IR sight, laser rangefinder, and auto-tracking; can also be manually controlled The Mark 38 25 mm machine gun system (MGS) is a shipboard weapon system designed to protect warships primarily from a variety of surface threats, especially small, fast surface craft . [ 1 ]

  4. Method of successive substitution - Wikipedia

    en.wikipedia.org/wiki/Method_of_successive...

    PROCEDURE. 1. Begin by rewriting the first congruence as an equation: x = 2a + 1, ∀a ∈ Z. 2. Rewrite the second congruence as an equation, and set the equation found in the first step equal to this equation, since x will substitute the x in the second congruence: x ≡ 2 (mod 3) x = 2a + 1 ≡ 2 (mod 3) 2a ≡ 1 (mod 3)

  5. Masurca - Wikipedia

    en.wikipedia.org/wiki/Masurca

    This mode of operation was common to both the service variants of the MASURCA, the mod 2 and the mod 3. The mod 2 was relatively primitive, the missile had no way of perceiving the target other than through the proximity fuse, the missile operating in effect as a command guided one, the accuracy of the missile dependent on the tracking systems ...

  6. Tigerfish (torpedo) - Wikipedia

    en.wikipedia.org/wiki/Tigerfish_(torpedo)

    The Mark 24 Tigerfish was a heavyweight acoustic homing torpedo used by the Royal Navy (RN) during the 1980s and 90s. Conceptual development dates to the mid-1950s, and formally started in 1959 with a target introduction date in 1969. A lengthy development process led to a greatly reduced performance requirement, including the removal of anti ...

  7. Quadratic reciprocity - Wikipedia

    en.wikipedia.org/wiki/Quadratic_reciprocity

    If q ≡ 1 (mod 4) then q is a quadratic residue (mod p) if and only if there exists some integer b such that p ≡ b 2 (mod q). If q ≡ 3 (mod 4) then q is a quadratic residue (mod p) if and only if there exists some integer b which is odd and not divisible by q such that p ≡ ±b 2 (mod 4q). This is equivalent to quadratic reciprocity.

  8. Modular arithmetic - Wikipedia

    en.wikipedia.org/wiki/Modular_arithmetic

    Adding 4 hours to 9 o'clock gives 1 o'clock, since 13 is congruent to 1 modulo 12. In mathematics, modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" when reaching a certain value, called the modulus. The modern approach to modular arithmetic was developed by Carl Friedrich Gauss in his book Disquisitiones ...

  9. Easy-to-use mods brought me back to ‘Freespace 2’ - Engadget

    www.engadget.com/2020-03-04-freespace-2-knossos...

    Definitely not, but when you consider Freespace 2 came out 21 years ago, it's a massive improvement. And Hard Light isn't slowing down development, either: It released a new pack of graphical ...