Meet the zeptosecond, which is the shortest time unit measured

Scientists have measured the shortest unit of time ever: the time it takes for particles of light to pass Hydrogen Atom

That time, for the record, is 247 zeptoseconds. A zeptosecond is a trillionth of a second, or one decimal point followed by 21 zeros and one. Earlier, researchers had entered the field of zeptoseconds; In 2016, researchers report in the journal Nature Physics Use of lasers to measure additional time up to 850 zeptoseconds. This accuracy is a huge leap from the 1999 Nobel Prize-winning work, which was first measured in femotoseconds, to a millionaire seconds.