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.
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Jordanes
Jordanes or Jordanis was a 6th century historian. He was an Ostrogoth and was a notary of Gothic kings in Italy. At the time of ...