One thousandth of a second
Amillisecond (frommilli- second ; symbol:ms ) is a unit oftime in theInternational System of Units equal to one thousandth (0.001 or 10−3 or1 /1000 ) of asecond [ 1] [ 2] microseconds .
A millisecond is to one second, as one second is to approximately 16.67 minutes.
A unit of 10 milliseconds may be called acentisecond , and one of 100 milliseconds adecisecond , but these names are rarely used.[ 3] orders of magnitude of differenttimes , this page lists times between10−3 seconds and 100 seconds (1milli second and one second).See also times of other orders of magnitude .
Horizontal logarithmic scale marked with units of time
TheApollo Guidance Computer used metric units internally, with centiseconds used for time calculation and measurement.[ 4]
1 millisecond (1 ms) –cycle time for frequency 1 kHz ; duration of light for typical photoflash strobe;[ 5] sound wave to travel about 34 cm; repetition interval ofGPS C/A PN code[ 6] 1 millisecond – time taken for light to travel 204.19 km in a single mode fiber optic cable for a wavelength of 1550 nm (frequency: 193 THz). 1 millisecond –nerve conduction velocity (neuron signal firing) happens on the order of milliseconds 1.000692286 milliseconds – time taken forlight to travel 300 km in a vacuum 1 to 5 milliseconds – typical response time in LCD computer monitors, especially high-end displays 2 milliseconds –Shift time for a modernFormula One car using aseamless-shift semi-automatic sequential transmission [ 7] 2.27 milliseconds – cycle time forpitch A440 , the most commonly used pitch for tuning musical instruments 3 milliseconds – ahousefly 's wing flap. Also the normativespeed of sound (an issue intrack and field ) 3.3 milliseconds – normal delay time between initiation and detonation of aC4 explosive charge 4 milliseconds – typical averageseek time for a 10,000 rpmhard disk 5 milliseconds – ahoney bee 's wing flap[ 8] 5 milliseconds to 80 milliseconds – ahummingbird 's wing flap 8 milliseconds – 1/125 of a second, a standardcamera shutter speed (125); fastest shifting time of acar's mechanical transmission 10 milliseconds (10 ms) – ajiffy , cycle time for frequency100 Hz 10.378 milliseconds – rotation period of pulsar B1639+36A[ 9] 15.625 milliseconds – atwo hundred fifty-sixth note at 60BPM 16.67 milliseconds (1/60 second) – athird , cycle time forAmerican 60 Hz ACelectricity (mains grid) 16.68 milliseconds (1/59.94 second) – the amount of time onefield lasts in 29.97 fpsinterlaced video (commonly erroneously referred to as 30 fps) 20 milliseconds – cycle time forEuropean 50 Hz AC electricity 31.25 milliseconds – ahundred twenty-eighth note at 60 BPM 33.367 milliseconds – the amount of time one frame lasts in 29.97 fps video (most common forNTSC -legacy formats) 41.667 milliseconds – the amount of time one frame lasts in 24 fps video (most commoncinematic frame rate) 41.708 milliseconds – the amount of time one frame lasts in 23.976 fps video (cinematic frame rate for NTSC-legacy formats) 50 milliseconds –the time interval between gear changes on aLamborghini Aventador ; with a 7-speed single-clutchautomated manual transmission 50 milliseconds – cycle time for the lowestaudible tone , 20 Hz 60 milliseconds – cycle time for European 16.7 Hz ACelectrified railroad power grid 60 milliseconds – the time interval between gear changes on aFerrari 458 Spider ; with a 7-speeddual-clutch automatic transmission 62.5 milliseconds – asixty-fourth note at 60 BPM 5 to 80 milliseconds – typicallatency for abroadband internet connection (important for playingonline games ) 100 milliseconds – the time interval between gear changes on aFerrari FXX ; with a 6-speed single-clutch automated manual transmission 125 milliseconds – athirty-second note at 60 BPM 134 milliseconds – time taken bylight to travel around theEarth 'sequator 150 milliseconds – recommended maximum time delay fortelephone service 100–400 milliseconds – the time for thehuman eye toblink [ 10] 185 milliseconds – the duration of a full rotation of the main rotor on Bell 205, 212, and 412helicopters (normal rotor speed is 324 RPM) 200 milliseconds – the time it takes the human brain to recognize emotion infacial expressions 250 milliseconds – asixteenth note at 60 BPM 400 milliseconds – time in which the fastestbaseball pitches reach the strike zone 430 to 500 milliseconds – common modern dance music tempos (120–140 BPM ) 495 milliseconds – an approximate average of the round trip time for communications viageosynchronous satellites 500 milliseconds – aneighth note at 60 BPM 770 milliseconds – revolution period of a78 rpm record 860 milliseconds – average human resting heart cycle time 1000 milliseconds – onesecond ; the period of a 1 Hz oscillator 86,400,000 (24 × 60 × 60 × 1000) milliseconds – one day 604,800,000 (24 × 60 × 60 × 1000 × 7) milliseconds – one week 31,556,925,974.7 (86,400,000 × approximately 365.242) milliseconds – one year 31,556,908,800... or (31,556,925,974.7 × approximately 10) milliseconds – one decade
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