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.
... White, 0.00% African American, 0.00% Native American, 1.45% Asian, 0.00% Pacific Islander, 0.00% from other races, and 0.00% from two or more races. 2.17% of the ...