Back Hertz AF هرتز Arabic Herciu AST Hers AZ Герц (адзінка вымярэння) BE Гэрц BE-X-OLD Херц Bulgarian হার্জ Bengali/Bangla ཧེར་ཚི། BO Hertz BR
| Other ways to to say hertz |
|---|
| inverse-seconds |
| cycles per second |
| cps |
The hertz (symbol: Hz, definition: 1/s) is a unit derived from time which measures frequency in the International System of Units (SI). Frequency is how often something happens. A frequency of 1 hertz means that something happens once a second. While hertz or Hz are the standard ways to express this unit, other expressions are sometimes used, as shown in the table.
The note Middle C (the C in the middle of the piano) is 261.65 (262) Hz. This means there are 262 vibrations every second, which is heard as the note Middle C, when that piano key is played.
Humans are able to hear sounds between 20 and 20 000 Hz.[1] Owls are able to hear sounds between 200 and 12000 Hz.[2]
The basic unit is per second. The unit is named after the German physicist Heinrich Rudolf Hertz.
- ↑ "Sensitivity of Human Ear". Retrieved 9 February 2016.
- ↑ "Frequency Hearing Ranges in Dogs and Other Species". Retrieved 9 February 2016.