A microsecond is equal to 1000
nanoseconds or 1⁄1,000 of a
millisecond. Because the next
SI prefix is 1000 times larger, measurements of 10−5 and 10−4 seconds are typically expressed as tens or hundreds of microseconds.
Examples
1 microsecond (1
μs) – cycle time for
frequency1×106hertz (1 MHz), the inverse unit. This corresponds to radio wavelength
300m (AM
medium wave band), as can be calculated by multiplying 1 μs by the
speed of light (approximately 3.00×108 m/s).
1 microsecond – the length of time of a high-speed, commercial
strobe light flash (see
air-gap flash).
1 microsecond –
protein folding takes place on the order of microseconds.
260 to 480 microseconds - return trip ICMP ping time, including operating system kernel TCP/IP processing and answer time, between two Gigabit Ethernet devices connected to the same local area network switch fabric.
277.8 microseconds – a fourth (a 60th of a 60th of a second), used in astronomical calculations by
al-Biruni and
Roger Bacon in 1000 and 1267 AD, respectively.[7][8]
490 microseconds – time for light at a 1550 nm frequency to travel 100 km in a singlemode fiber optic cable (where speed of light is approximately 200 million metres per second due to its
index of refraction).
The average human eye
blink takes 350,000 microseconds (just over 1⁄3 second).
The average human finger
snap takes 150,000 microseconds (just over 1⁄7 second).
A
camera flash illuminates for 1,000 microseconds.
Standard camera
shutter speed opens the shutter for 4,000 microseconds or 4 milliseconds.
584542 years of microseconds fit in 64 bits: (2**64)/(1e6*60*60*24*365.25).
A microsecond is equal to 1000
nanoseconds or 1⁄1,000 of a
millisecond. Because the next
SI prefix is 1000 times larger, measurements of 10−5 and 10−4 seconds are typically expressed as tens or hundreds of microseconds.
Examples
1 microsecond (1
μs) – cycle time for
frequency1×106hertz (1 MHz), the inverse unit. This corresponds to radio wavelength
300m (AM
medium wave band), as can be calculated by multiplying 1 μs by the
speed of light (approximately 3.00×108 m/s).
1 microsecond – the length of time of a high-speed, commercial
strobe light flash (see
air-gap flash).
1 microsecond –
protein folding takes place on the order of microseconds.
260 to 480 microseconds - return trip ICMP ping time, including operating system kernel TCP/IP processing and answer time, between two Gigabit Ethernet devices connected to the same local area network switch fabric.
277.8 microseconds – a fourth (a 60th of a 60th of a second), used in astronomical calculations by
al-Biruni and
Roger Bacon in 1000 and 1267 AD, respectively.[7][8]
490 microseconds – time for light at a 1550 nm frequency to travel 100 km in a singlemode fiber optic cable (where speed of light is approximately 200 million metres per second due to its
index of refraction).
The average human eye
blink takes 350,000 microseconds (just over 1⁄3 second).
The average human finger
snap takes 150,000 microseconds (just over 1⁄7 second).
A
camera flash illuminates for 1,000 microseconds.
Standard camera
shutter speed opens the shutter for 4,000 microseconds or 4 milliseconds.
584542 years of microseconds fit in 64 bits: (2**64)/(1e6*60*60*24*365.25).