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  2. Muzzle rise - Wikipedia

    en.wikipedia.org/wiki/Muzzle_rise

    Illustration of forces in muzzle rise. Projectile and propellant gases act on barrel along barrel centerline A. Forces are resisted by shooter contact with gun at grips and stock B. Height difference between barrel centerline and average point of contact is height C. Forces A and B operating over moment arm / height C create torque or moment D, which rotates the firearm's muzzle up as ...

  3. Startle response - Wikipedia

    en.wikipedia.org/wiki/Startle_response

    Usually the onset of the startle response is a startle reflex reaction. The startle reflex is a brainstem reflectory reaction (reflex) that serves to protect vulnerable parts, such as the back of the neck (whole-body startle) and the eyes (eyeblink) and facilitates escape from sudden stimuli. It is found across many different species ...

  4. Reaction formation - Wikipedia

    en.wikipedia.org/wiki/Reaction_formation

    Reaction formation is an effective form of disguise, and can be utilized in many forms. For example, "solicitude may be a reaction-formation against cruelty, cleanliness against coprophilia". [1] An analyst might explain a client's unconditional pacifism as a reaction formation against their sadism. In addition,

  5. Defence mechanism - Wikipedia

    en.wikipedia.org/wiki/Defence_mechanism

    In the first definitive book on defence mechanisms, The Ego and the Mechanisms of Defence (1936), [7] Anna Freud enumerated the ten defence mechanisms that appear in the works of her father, Sigmund Freud: repression, regression, reaction formation, isolation, undoing, projection, introjection, turning against one's own person, reversal into the opposite, and sublimation or displacement.

  6. Recoil - Wikipedia

    en.wikipedia.org/wiki/Recoil

    The gun acquires a rearward velocity that is ratio of this momentum by the mass of the gun: the heavier the gun, the slower the rearward velocity. As an example, a 8 g (124 gr) bullet of 9×19mm Parabellum flying forward at 350 m/s muzzle speed generates a momentum to push a 0.8 kg pistol firing it at 3.5 m/s rearward, if unopposed by the shooter.

  7. Inhibition of return - Wikipedia

    en.wikipedia.org/wiki/Inhibition_of_return

    IOR was first described in depth by Michael Posner and Yoav Cohen, [1] who discovered that, contrary to their expectations, reaction times (RT) to detect objects appearing in previously cued locations were initially faster to validly cued location (known as the validity effect), but then after a period of around 300 ms, response times to a previously cued location were longer than to uncued ...

  8. Recoil operation - Wikipedia

    en.wikipedia.org/wiki/Recoil_operation

    Recoil operation is an operating mechanism used to implement locked-breech autoloading firearms. Recoil operated firearms use the energy of recoil to cycle the action, as opposed to gas operation or blowback operation using the pressure of the propellant gas.

  9. Reactance (psychology) - Wikipedia

    en.wikipedia.org/wiki/Reactance_(psychology)

    In psychology, reactance is an unpleasant motivational reaction to offers, persons, rules, regulations, advice, recommendations, information, nudges, and messages that are perceived to threaten or eliminate specific behavioral freedoms. Reactance occurs when an individual feels that an agent is attempting to limit one's choice of response and ...