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The systems cost more than $15,000 and use three nozzles to shoot a non-flammable mixture of liquid nitrogen compressed with carbon dioxide that fills a two-story club in about 10 seconds, according to a club director. This cools the area 20 degrees for a few seconds as a white cloud that can be colored with flashing lights fills the area.
While light characteristics can be described in prose, e.g. "Flashing white every two seconds", lists of lights and navigation chart annotations use abbreviations. The abbreviation notation is slightly different from one light list to another, with dots added or removed, but it usually follows a pattern similar to the following (see the chart ...
Strobe lights are flashing white lights on the furthest left, right and, on larger aircraft and some smaller ones, back points of an aircraft. They are the brightest lights on the aircraft, and are used to signal that an aircraft is entering or approaching an active runway, or for visibility in dark, clear sky.
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White: Certain railroad-related machines, like fueling tankers, locomotive fuelling service-stations, track maintenance and switching engines, may also use a flashing white light. Purple : funeral processions - British Columbia, [ 33 ] Ontario, Quebec, Alberta, Manitoba, Nova Scotia, Newfoundland and Labrador, and Prince Edward Island.
Representation of upper-atmospheric lightning and electrical-discharge phenomena Discovery image of a TLE on Jupiter by the NASA Juno probe. [1]Upper-atmospheric lightning and ionospheric lightning are terms sometimes used by researchers to refer to a family of short-lived electrical-breakdown phenomena that occur well above the altitudes of normal lightning and storm clouds.
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Traffic signal preemption (also called traffic signal prioritisation) is a system that allows an operator to override the normal operation of traffic lights.The most common use of these systems manipulates traffic signals in the path of an emergency vehicle, halting conflicting traffic and allowing the emergency vehicle right-of-way, thereby reducing response times and enhancing traffic safety.