Hertz: Difference between revisions
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<onlyinclude>'''Hertz''' (Hz) is a [[units|unit]] of [[frequency]], measured in s<sup>-1</sup></onlyinclude>, or one over [[second]]s. It is used to measure how many times something happens in a second. Hertz are an important unit for defining waves, where frequency is one of the defining characteristics. | <onlyinclude>'''Hertz''' (Hz) is a [[units|unit]] of [[frequency]], measured in s<sup>-1</sup></onlyinclude>, or one over [[second]]s. It is used to measure how many times something happens in a second. Hertz are an important unit for defining waves, where frequency is one of the defining characteristics. | ||
Revision as of 20:11, 1 June 2018
Hertz (Hz) is a unit of frequency, measured in s-1, or one over seconds. It is used to measure how many times something happens in a second. Hertz are an important unit for defining waves, where frequency is one of the defining characteristics.
A more specific unit, related to the Hz, is the RPM (rotations per minute). Two useful conversions: 1 RPM = 0.0167 Hz and 60 RPM = 1 Hz
Electrical grid
The electrical grid in North America and Japan runs at 60 Hz, while the European grid runs at 50 Hz.[1] This means that the voltage on the electrical grid hits its maximum value 60 (or 50) times in a second.
References
- ↑ (2014, Aug. 5). Frequency. [Online]. Available: https://www.swissgrid.ch/content/swissgrid/en/home/experts/topics/frequency.html