PSEC meaning in Computing ?

What is Picosecond mean?

A picosecond is an SI unit of time equal to 10−12 or 1⁄1 000 000 000 000 (one trillionth) of a second. That is one trillionth, or one millionth of one millionth of a second, or 0.000 000 000 001 seconds. A picosecond is to one second as one second is to approximately 31,689 years. Multiple technical approaches achieve imaging within single-digit picoseconds: for example, the streak camera or intensified CCD (ICCD) cameras are able to picture the motion of light.

The name is formed by the SI prefix pico and the SI unit second. It is abbreviated as ps.

One picosecond is equal to 1000 femtoseconds, or 1/1000 nanoseconds. Because the next SI unit is 1000 times larger, measurements of 10−11 and 10−10 second are typically expressed as tens or hundreds of picoseconds. Some notable measurements in this range include:

1.0 picoseconds (1.0 ps) – cycle time for electromagnetic frequency 1 terahertz (THz) (1 x 1012 hertz), an inverse unit. This corresponds to a wavelength of 0.3 mm, as can be calculated by multiplying 1 ps by the speed of light (approximately 3 x 108 m/s) to determine the distance traveled. 1 THz is in the far infrared.1 picosecond – time taken by light in a vacuum to travel approximately 0.30 mm1 picosecond – half-life of a bottom quark~1 picosecond – lifetime of a single H
3O+
(hydronium) ion in water at 20 °Cpicoseconds to nanoseconds – phenomena observable by dielectric spectroscopy1.2 picoseconds – switching time of the world's fastest transistor (845 GHz, as of 2006)1.7 picoseconds - rotational correlation time of water3.3 picoseconds (approximately) – time taken for light to travel 1 millimeter10 picoseconds after the Big Bang – electromagnetism separates from the other fundamental forces10–150 picoseconds – rotational correlation times of a molecule (184 g/mol) from hot to frozen water108.7827757 picoseconds – transition time between the two hyperfine levels of the ground state of the caesium-133 atom at absolute zero330 picoseconds (approximately) – the time it takes a common 3.0 GHz computer CPU to complete a processing cycle reference