Search results
Results from the WOW.Com Content Network
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 ...
Other uses of MAC include MAC-BAR (1.7–2.0 MAC), which is the concentration required to block autonomic reflexes to nociceptive stimuli, and MAC-awake (0.3–0.5 MAC), the concentration required to block voluntary reflexes and control perceptive awareness.
In December 1939, No. 111 Squadron RAF adjusted its Hurricanes to fire into a wide rectangle that was 12 by 8 ft (3.7 by 2.4 m) at 750 ft (230 m). [5] This was referred to as the "Dowding spread" because Air Chief Marshal Hugh Dowding advocated such a large pattern to make it more likely that a mediocre fighter pilot would obtain a hit. [ 6 ]
The linear induction, Faraday flashlight, or "shake flashlight" is another type of mechanically powered flashlight. It has been sold in the US beginning with direct marketing campaigns in 2002. This design contains a linear electrical generator which charges a supercapacitor which functions similarly to a rechargeable battery when the ...
The National Highway Traffic Safety Administration estimates that 2.5% of fatal crashes and 2% of injury crashes involve drowsy driving. [22] Fatigue is associated with 250 fatalities in air carrier accidents in the last 16 years. [23] The 2016 Croydon tram derailment, a result of a suspected microsleep afflicting the driver
AN/PAS-13 Ver. 2 mounted on an AR-15 with a brass catcher. In November 2006, three new versions of the AN/PAS-13 were ordered by the U.S. military. The Thermal Weapon Sights II include three new versions, a Light, Medium, and Heavy. All three models weigh less than the originals, weighing 1.8 lbs, 2.8 lbs, and 3.9 lbs respectively.
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.
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.