1.0 milliseconds -- cycle time for frequency 1 kHz
1 ms -- duration of light for typical photo flash strobe
2.27 ms -- cycle time for the A above middle C in music (440 Hz). If an electric tuning device for musical instruments generates just one tone, this is probably that tone.
... in the Americas. About 80% of all Brazilians belong to the Roman Catholic Church; most others adhere to various Protestant faiths or follow practices derived from African ...