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unit

Frequency

discrete events
Rotational frequency

Definition

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;

Online converter

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Units of measurement

namesymbol value in SI unit:
s-1
note
1 unit per hourh-1≈ 2.(7) × 10-4(1)
1 unit per minutemin-1≈ 0.01(6)(2)
1 cycles per hourcph≈ 2.(7) × 10-4 
1 cycles per minutecpm≈ 0.01(6) 
1 cycles per secondcps= 1.0 
1 revolutions per hourrph, r/h≈ 2.(7) × 10-4
1 revolutions per minuterpm, r/min≈ 0.01(6) 
1 revolutions per secondrps, r/s= 1.0 
1 tours per hourtr/h≈ 2.(7) × 10-4 
1 tours per minutetr/min≈ 0.01(6) 
1 tours per secondtr/s= 1.0 

Note:

(1) - 1/h;

(2) - 1/min;