Assertion: frequency | /r/HasProperty | 2 per second
Facets:
Source sentences:
text: If the period, or time interval, required to complete one cycle or vibration is 1/ 2 second, the frequency is 2 per second; if the period is 1/ 100 of an hour, the frequency is 100 per hour.
text: So if the time it takes for a wave to pass is is 1/2 second, the frequency is 2 per second.