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unit of measure: the base unit | the supplementary unit | the derived unit

*geometry: the area of a flat figure | the area of a solid | the volume of the solid*

The ** frequency (discrete events)** is the physical measure, which defines the number of events that occur in a timeframe.

** 1 unit per second** is the frequency, for which in 1 second 1 event takes place.

The ** rotational frequency ** is the physical measure, which defines the number of full revolutions of a body, which rotates uniformly in a period of time.

** 1 unit per second** is the rotation frequency, for which in 1 second, 1 cycle of complete revolution occurs.

system of units: | SI; |

statute: | derived unit; |

name the value: | υ; |

unit name: | unit per second; |

symbol unit: | s^{-1}; |

relationship of definition: | υ=n/t; |

dimension: | T^{-1} (AT^{-1}); |

expression in other units: | s^{-1}; |

from:

name | symbol | value in SI unit: s ^{-1} | note |

1 unit per hour | h^{-1} | ≈ 2.(7) × 10^{-4} | ^{(1)} |

1 unit per minute | min^{-1} | ≈ 0.01(6) | ^{(2)} |

1 cycles per hour | cph | ≈ 2.(7) × 10^{-4} | |

1 cycles per minute | cpm | ≈ 0.01(6) | |

1 cycles per second | cps | = 1.0 | |

1 revolutions per hour | rph, r/h | ≈ 2.(7) × 10^{-4} | |

1 revolutions per minute | rpm, r/min | ≈ 0.01(6) | |

1 revolutions per second | rps, r/s | = 1.0 | |

1 tours per hour | tr/h | ≈ 2.(7) × 10^{-4} | |

1 tours per minute | tr/min | ≈ 0.01(6) | |

1 tours per second | tr/s | = 1.0 |

^{(1)} - 1/h;

^{(2)} - 1/min;