the.com/millisecond
A thousandth of a second, which is forever to a computer and nothing to you.
means A unit of time equal to one one-thousandth of a second, used wherever blinking is too slow to measure.
from From Latin mille, a thousand, fused with second, the unit already chopped twice down from the hour.
Blink speedA human blink takes about 100 to 400 milliseconds.
HummingbirdIts wings beat once every twenty milliseconds.
Stock tradingMilliseconds decide who profits from a price.