ps

picosecond

Timeexact by definition

The picosecond is 10⁻¹² of a second, an exact SI prefix. Light covers 0.3 mm in one, which makes it the working unit of high-speed electronics: signal skew across a circuit board, jitter in a clock distribution network and the switching time of a fast transistor are all quoted in picoseconds.

1 ps 1.0000000e-12 s