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FLASH (Z) is reserved for initial enemy contact messages or operational combat messages of extreme urgency. Brevity is mandatory. Brevity is mandatory. FLASH messages are to be handled as fast as humanly possible, ahead of all other messages, with in-station handling time not to exceed 10 minutes.
An arc flash is the light and heat produced as part of an arc fault (sometimes referred to as an electrical flashover), ...
The eyebrow flash is an unconscious social signal, a raising of the eyebrows for about a fifth of a second that communicates a wish to approach another whom the sender recognizes and is preparing for social contact (such as a greeting).
Wally West, the first Kid Flash and third adult Flash; Bart Allen, the second Kid Flash who also became the adult hero for a time; Flash (G.I. Joe), a character in the G.I. Joe universe; Flash, a robot in the video game Brave Saga 2; Flash, a character in the comedy film Daddy Day Care (2003) Flash, a character in the TV science fiction drama ...
A flash mob (or flashmob) [1] is a group of people that assembles suddenly in a public place, performs for a brief time, then quickly disperses, ...
Breaking news, also called late-breaking news, a special report, special coverage, or a news flash, is a current issue that warrants the interruption of a scheduled broadcast in order to report its details. News broadcasters also use the term for continuing coverage of events of broad interest to viewers, attracting accusations of sensationalism.
A flash flood in Canandaigua, New York in 2017, greatly inundates a small ditch, flooding barns and ripping out newly installed drain pipes. The United States National Weather Service gives the advice "Turn Around, Don't Drown" for flash floods; that is, it recommends that people get out of the area of a flash flood, rather than trying to cross ...
A full-power flash from a modern built-in or hot shoe mounted electronic flash has a typical duration of about 1ms, or a little less, so the minimum possible exposure time for even exposure across the sensor with a full-power flash is about 2.4 ms + 1.0 ms = 3.4 ms, corresponding to a shutter speed of about 1 ⁄ 290 s. However some time is ...