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The quality of Holosun products although originally poor improved significantly through the 2010s to the point where it began to rival more established manufacturers. [ 1 ] One of Holosun's innovations is “shake awake” where a motion sensor in the optic will power on the optic when it senses motion and power down when it does not sense ...
A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.
Among the supportive evidence, he calculated that if aqueous humor was stagnant, oxygen from the iris had to reach the cornea by diffusion through aqueous humor, which was not sufficient. According to the theory, when the organism is awake, eye movement (or cool environmental temperature) enables the aqueous humor to circulate.
Optical image stabilization enables prolonged exposure times for low-light photography and smoothing out handheld video shaking, since the appearance of shakes magnifies over a larger display such as a monitor or television set, which would be detrimental to the watching experience.