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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 second wind may come more readily at certain points of the circadian (24hr) biological clock than others.. Second wind (or third wind, fourth wind, etc.), a colloquial name for the scientific term wake maintenance zone, is a sleep phenomenon in which a person, after a prolonged period of staying awake, temporarily ceases to feel drowsy, often making it difficult to fall asleep when exhausted.
Microsleep is extremely dangerous when it occurs in situations that demand constant alertness, such as driving a motor vehicle or working with heavy machinery. People who experience microsleeps often remain unaware of them, instead believing themselves to have been awake the whole time, or to have temporarily lost focus.
Their sleep is more asymmetric in flight than on land, and they sleep mostly while circling air currents during flight. The eye connected to the awake hemisphere of their brain is the one facing the direction of flight. Once they land, they pay off their sleep debt, as their REM sleep duration significantly decreases and slow-wave sleep ...
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.
The AWAKE (Advanced WAKEfield Experiment) facility at CERN is a proof-of-principle experiment, which investigates wakefield plasma acceleration using a proton bunch as a driver, a world-wide first. It aims to accelerate a low-energy witness bunch of electrons from 15 to 20 M eV to several GeV over a short distance (10 m) by creating a high ...
The Shake Weight is a modified dumbbell that oscillates, purportedly increasing the effects of exercise. As a result of the perceived sexually suggestive nature of the product, infomercial clips of the exercise device have gone viral.
Two people shaking hands Richard Nixon shaking hands with Pope Paul VI. A handshake is a globally widespread, brief greeting or parting tradition in which two people grasp one of each other's hands, and in most cases, it is accompanied by a brief up-and-down movement of the grasped hands.