(physics) a regular periodic variation in value about a mean | a wheeled vehicle that has two wheels and is moved by foot pedals |
a single complete execution of a periodically repeated phenomenon | a single complete execution of a periodically repeated phenomenon |
the process of oscillating between states | a periodically repeated sequence of events |
| a series of poems or songs on the same theme |
| an interval during which a recurring sequence of events occurs |
| the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz) |