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<p>CSV import</p> <p><b>New page</b></p><div>[[File:FrequencyAnimation.gif|thumb|FrequencyAnimation.gif]] &#039;&#039;&#039;Hertz&#039;&#039;&#039; (symbol: Hz) is the [[unit]] of [[frequency]] in the [[International System of Units]] (SI). It is defined as one [[cycle]] per [[second]]. The unit is named after the [[German]] [[physicist]] [[Heinrich Hertz]], who made significant contributions to the study of [[electromagnetic waves]].<br /> <br /> == Definition ==<br /> One hertz represents one cycle per second. The [[SI unit]] is used to measure the frequency of periodic phenomena, such as [[sound waves]], [[radio waves]], and [[light waves]]. For example, a sound wave with a frequency of 50 Hz completes 50 cycles in one second.<br /> <br /> == History ==<br /> The unit was established in honor of Heinrich Hertz, who was the first to conclusively prove the existence of electromagnetic waves. His experiments in the late 19th century confirmed the theories of [[James Clerk Maxwell]].<br /> <br /> == Applications ==<br /> Hertz is used in various fields, including:<br /> * [[Acoustics]]: Measuring the frequency of sound waves.<br /> * [[Electronics]]: Describing the frequency of [[oscillators]] and [[signal processing]].<br /> * [[Radio]]: Defining the frequency of radio waves, which are used in [[communication systems]].<br /> * [[Computing]]: Measuring the clock speed of [[central processing units]] (CPUs).<br /> <br /> == Multiples and Submultiples ==<br /> The hertz can be expressed in multiples and submultiples:<br /> * [[Kilohertz]] (kHz) - 1,000 Hz<br /> * [[Megahertz]] (MHz) - 1,000,000 Hz<br /> * [[Gigahertz]] (GHz) - 1,000,000,000 Hz<br /> * [[Millihertz]] (mHz) - 0.001 Hz<br /> * [[Microhertz]] (µHz) - 0.000001 Hz<br /> <br /> == Related Concepts ==<br /> * [[Frequency]]<br /> * [[Wave]]<br /> * [[Electromagnetic spectrum]]<br /> * [[Sound]]<br /> * [[Radio frequency]]<br /> * [[Signal processing]]<br /> <br /> == See Also ==<br /> * [[Heinrich Hertz]]<br /> * [[James Clerk Maxwell]]<br /> * [[Electromagnetic wave]]<br /> * [[International System of Units]]<br /> <br /> == References ==<br /> {{Reflist}}<br /> <br /> == External Links ==<br /> {{Commons category|Hertz}}<br /> <br /> [[Category:Units of frequency]]<br /> [[Category:SI derived units]]<br /> [[Category:Electromagnetic spectrum]]<br /> [[Category:Acoustics]]<br /> [[Category:Radio technology]]<br /> <br /> {{SI-units-stub}}</div>

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