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Ballistics is the field of mechanics concerned with the launching, flight behaviour and impact effects of projectiles, especially weapon munitions such as bullets, unguided bombs, rockets and the like; the science or art of designing and accelerating projectiles so as to achieve a desired performance.
The oddball paradigm is an experimental design used within psychology research. The oddball paradigm relies on the brain's sensitivity to rare deviant stimuli presented pseudo-randomly in a series of repeated standard stimuli.
Throwing mechanisms, along with projectiles themselves, rank amongst the oldest technological artefacts in the archaeological records. They vary greatly in size and complexity, from the hand-held and extremely simple sling, to the very heavy and complex catapults. These two types of devices have in common with hand-throwing the fact that the ...
[52] [53] Human cannonball circus acts use a catapult launch mechanism, rather than gunpowder, and are risky ventures for the human cannonballs. [54] Early launched roller coasters used a catapult system powered by a diesel engine or a dropped weight to acquire their momentum, [55] such as Shuttle Loop installations between 1977 and 1978.
This schlieren image of a bullet travelling in free-flight demonstrates the air-pressure dynamics surrounding the bullet.. External ballistics or exterior ballistics is the part of ballistics that deals with the behavior of a projectile in flight.
Fixed action patterns are said to be produced by the innate releasing mechanism, a "hard-wired" neural network, in response to a sign/key stimulus or releaser. [1] [2] Once released, a fixed action pattern runs to completion. [1] This term is often associated with Konrad Lorenz, who is the founder of the concept. [1]
A mechanism that traps the ball on the playfield and triggers a new ball to be added to the playfield. A locked ball can then later be released to start a mulitball. Some games may use "virtual locks" which still allow a player to progress towards a mulitball without physically trapping a ball on the playfield, instead launching multiple balls ...
where r is the radius of the ball, ω the angular velocity (or spin rate) of the ball, ρ the density of air, and v the velocity of the ball relative to air. This force is directed perpendicular to the motion and perpendicular to the axis of rotation (in the direction of ω ^ × v ^ {\displaystyle \textstyle {\hat {\mathbf {\omega } }}\times ...