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.
... the town is 93.53% White, 1.36% African American, 0.15% Native American, 2.41% Asian, 0.03% Pacific Islander, 1.25% from other races, and 1.27% from two or more races ...