second(s) - 1s

millisecond(ms) - 10^-3s

microsecond(μs) - 10^-6s

nanosecond(ns) - 10^-9s

picosecond(ps) - 10^-12s

https://namu.wiki/w/%EC%B4%88(%EB%8B%A8%EC%9C%84)#s-1.5

https://simple.wikipedia.org/wiki/Unit_of_time