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Flashes per minute information


Flashes per minute (FPM) is simply the number of times a flashing light blinks per minute. Police and emergency vehicles use warning lights with flashing rates that typically fall in a range from 60 to 240 FPM. In North America, grade crossing signals have a flashing rate ranging between 45 and 65 FPM with the ideal rate being 60 FPM.

Persons with photosensitive epilepsy may suffer a seizure in response to a specific flashing frequency, e.g. 420 FPM, but the exact triggering frequency varies across individuals. To minimize the likelihood of an epileptogenic response, flashing rates above 300 FPM (5 Hz) should be avoided (Harding and Jeavons, 1994).

For conversion purposes, 60 FPM = 1 Hz (i.e. a frequency of one per second).

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Flashes per minute

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Flashes per minute (FPM) is simply the number of times a flashing light blinks per minute. Police and emergency vehicles use warning lights with flashing...

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flashes per minute), very quick (more than 80 and less than 160 flashes per minutes, abbreviated "V.Q") and ultra quick (no less than 160 flashes per...

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single flash beacons operating at a frequency of 20 to 30 flashes per minute. Heliports with beacons exhibit the morse letter H (4 short flashes) at a...

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a defunct Mexican political party Feet per minute Finite point method Finite pointset method Flashes per minute for lighting accessories Fluorinated propylene...

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300 mm (12") in diameter, which has a lamp that provides 40 to 60 flashes per minute, or a 400 mm (16") diameter fluorescent orange disk. The pole must...

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Kojak

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Model # 76033 and has the same teardrop design lens that emits 80 flashes per minute in a rotating beacon. Both items comply to SAE J845 Class I standards...

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Fire alarm notification appliance

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that strobes be at least 15 candelas and have a flash rate of at least 60 flashes per minute (one flash per second).[citation needed] Companies discontinued...

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Bicycle lighting

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steady mode is considered approved only if it flashes at a constant rate of between 60 and 240 flashes per minute and has a luminous intensity of at least...

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Level crossings by country

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train). In 2019, KiwiRail changed the rate of flashing lights at level crossings from 85 fpm (flashes per minute) to the standard laid down by the "American...

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Catatumbo lightning

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for 140 to 160 nights a year, nine hours per day, and with lightning flashes from 16 to 40 times per minute. It occurs over and around Lake Maracaibo...

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Cycling in Denmark

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time. Blinking lights are allowed with a minimum frequency of 120 flashes per minute (2 Hz). Blinking orange front-facing lights are not allowed (due to...

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Fresnel lens

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lighthouses to be identified not only by frequency of flashes, but also by multiplicity of flashes. Double-flashing lenses were installed at Tampico (Mexico) and...

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Level crossings in New Zealand

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pedestrians. In 2019, KiwiRail changed the rate of flashing lights at level crossings from 85 fpm (flashes per minute) to the standard laid down by the "American...

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Kullen Lighthouse

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Fresnel lenses in a lens house that rotates four times per minute, hence giving twelve flashes per minute. Based on Augustin-Jean Fresnel's design, the lens...

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VRPM

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vRPM, or virtual Revolutions Per Minute, was a term for a synthetic measurement of performance introduced by SanDisk for solid state drive (SSD) storage...

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Distribution of lightning

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over the entire Earth, making a total of about 1.4 billion flashes per year. The lightning flash rate averaged over the Earth for intra-cloud (IC) + cloud-to-cloud...

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Morse code

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16 code groups per minute, 20 words per minute, 20 code groups per minute, and 25 words per minute.: §13.203(b)  The word per minute rate would be close...

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Frequency

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and light. For example, if a heart beats at a frequency of 120 times per minute (2 hertz), the period—the interval between beats—is half a second (60 seconds...

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Distress signal

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signals: Sea marker dye White high-intensity strobe light flashing at 60 times per minute In addition, distress can be signaled using automated radio...

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Lightning

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[clarification needed] In general, CG lightning flashes account for only 25% of all total lightning flashes worldwide. Since the base of a thunderstorm is...

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2010 flash crash

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The May 6, 2010, flash crash, also known as the crash of 2:45 or simply the flash crash, was a United States trillion-dollar flash crash (a type of stock...

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IOPS

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meaningless. In isolation, IOPS can be considered analogous to "revolutions per minute" of an automobile engine i.e. an engine capable of spinning at 10,000...

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Megabyte

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audio. 1 minute of 128 kbit/s MP3 lossy compressed audio. a typical English book volume in plain text format (500 pages × 2000 characters per page). The...

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Million Dollar Minute

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Million Dollar Minute is an Australian quiz show which aired on the Seven Network. It premiered on 16 September 2013. The show was originally hosted by...

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M240 machine gun

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650–750 rounds per minute, the second setting being 750–850 rounds per minute, and the third setting being 850–950 rounds per minute. These settings...

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Floater

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available under the CC BY 4.0 license. "Flashes & Floaters". The Eye Digest. Retrieved 2008-02-24. "Flashes and Floaters (Posterior Vitreous Detachment)"...

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