zeptosecond 

A zeptosecond is a unit of time equal to one trillionth of one billionth of a second, or 10^-21 seconds. It is currently the shortest measurable unit of time in the scientific world. Recent experiments have been able to measure the duration of light pulses on this timescale, opening up new avenues of research in the field of attosecond science.

Scientists have now been able to measure the time it takes for an electron to leave its position in an atom, and it's in the range of zeptoseconds.

zeptosecond by CoolVursa18 February 25, 2023

septosecond

a tiny amount of time that can be hyperbolic, or actually barely a second

"dude i wasn't even talking for a septosecond before you interrupted me!"

septosecond by altostar482 December 9, 2024