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class="mw-page-title-main">Microsecond</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. 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href="https://ast.wikipedia.org/wiki/Microsegundu" title="Microsegundu – Asturian" lang="ast" hreflang="ast" data-title="Microsegundu" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Sekunde#Abgeleitete_Maßeinheiten" title="Sekunde – German" lang="de" hreflang="de" data-title="Sekunde" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Microsegundo" title="Microsegundo – Spanish" lang="es" hreflang="es" data-title="Microsegundo" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Mikrosegundo" title="Mikrosegundo – Basque" lang="eu" hreflang="eu" data-title="Mikrosegundo" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%DB%8C%DA%A9%D8%B1%D9%88%D8%AB%D8%A7%D9%86%DB%8C%D9%87" title="میکروثانیه – Persian" lang="fa" hreflang="fa" data-title="میکروثانیه" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr badge-Q70894304 mw-list-item" title=""><a href="https://fr.wikipedia.org/wiki/Microseconde" title="Microseconde – French" lang="fr" hreflang="fr" data-title="Microseconde" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/M%C3%AC-mi%C3%A9u" title="Mì-miéu – Hakka Chinese" lang="hak" hreflang="hak" data-title="Mì-miéu" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="Hakka Chinese" class="interlanguage-link-target"><span>客家語 / Hak-kâ-ngî</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%A7%88%EC%9D%B4%ED%81%AC%EB%A1%9C%EC%B4%88" title="마이크로초 – Korean" lang="ko" hreflang="ko" data-title="마이크로초" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/M%C3%ADkr%C3%B3sek%C3%BAnda" title="Míkrósekúnda – Icelandic" lang="is" hreflang="is" data-title="Míkrósekúnda" data-language-autonym="Íslenska" data-language-local-name="Icelandic" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Microsecondo" title="Microsecondo – Italian" lang="it" hreflang="it" data-title="Microsecondo" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Mikroszekundum" title="Mikroszekundum – Hungarian" lang="hu" hreflang="hu" data-title="Mikroszekundum" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Microseconde" title="Microseconde – Dutch" lang="nl" hreflang="nl" data-title="Microseconde" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%9E%E3%82%A4%E3%82%AF%E3%83%AD%E7%A7%92" title="マイクロ秒 – Japanese" lang="ja" hreflang="ja" data-title="マイクロ秒" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Mikrosekund" title="Mikrosekund – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Mikrosekund" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Mikrosekund" title="Mikrosekund – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Mikrosekund" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Mikrosekunda" title="Mikrosekunda – Polish" lang="pl" hreflang="pl" data-title="Mikrosekunda" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9C%D0%B8%D0%BA%D1%80%D0%BE%D1%81%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Микросекунда – Russian" lang="ru" hreflang="ru" data-title="Микросекунда" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Mikrosekonda" title="Mikrosekonda – Albanian" lang="sq" hreflang="sq" data-title="Mikrosekonda" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Microsecunnu" title="Microsecunnu – Sicilian" lang="scn" hreflang="scn" data-title="Microsecunnu" data-language-autonym="Sicilianu" data-language-local-name="Sicilian" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Microsecond" title="Microsecond – Simple English" lang="en-simple" hreflang="en-simple" data-title="Microsecond" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Mikrosekunda" title="Mikrosekunda – Slovenian" lang="sl" hreflang="sl" data-title="Mikrosekunda" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sv badge-Q70893996 mw-list-item" title=""><a href="https://sv.wikipedia.org/wiki/Mikrosekund" title="Mikrosekund – Swedish" lang="sv" hreflang="sv" data-title="Mikrosekund" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%84%E0%B8%A1%E0%B9%82%E0%B8%84%E0%B8%A3%E0%B8%A7%E0%B8%B4%E0%B8%99%E0%B8%B2%E0%B8%97%E0%B8%B5" title="ไมโครวินาที – Thai" lang="th" hreflang="th" data-title="ไมโครวินาที" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Mikrosaniye" title="Mikrosaniye – Turkish" lang="tr" hreflang="tr" data-title="Mikrosaniye" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9C%D1%96%D0%BA%D1%80%D0%BE%D1%81%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Мікросекунда – Ukrainian" lang="uk" hreflang="uk" data-title="Мікросекунда" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Mikrosegundo" title="Mikrosegundo – Waray" lang="war" hreflang="war" data-title="Mikrosegundo" data-language-autonym="Winaray" data-language-local-name="Waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E5%BE%AE%E7%A7%92" title="微秒 – Cantonese" lang="yue" hreflang="yue" data-title="微秒" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh badge-Q70894304 mw-list-item" title=""><a href="https://zh.wikipedia.org/wiki/%E5%BE%AE%E7%A7%92" title="微秒 – Chinese" lang="zh" hreflang="zh" data-title="微秒" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q842015#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav 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data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">One millionth of a second</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox ib-unit"><tbody><tr><th colspan="2" class="infobox-above">microsecond</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/System_of_units_of_measurement" title="System of units of measurement">Unit system</a></th><td class="infobox-data"><a href="/wiki/SI" class="mw-redirect" title="SI">SI</a></td></tr><tr><th scope="row" class="infobox-label">Unit of</th><td class="infobox-data"><a href="/wiki/Time" title="Time">time</a></td></tr><tr><th scope="row" class="infobox-label">Symbol</th><td class="infobox-data">μs</td></tr><tr><th colspan="2" class="infobox-header">Conversions </th></tr><tr class="nowrap"><td>1 μs <i>in ...</i></td><td><i>... is equal to ...</i></td></tr><tr style="display:none"><th colspan="2"> </th></tr><tr><th scope="row" class="infobox-label"><span class="nowrap">   </span><a href="/wiki/SI_units" class="mw-redirect" title="SI units">SI units</a></th><td class="infobox-data"><span class="nowrap">   </span><span class="nowrap"><span data-sort-value="6994100000000000000♠"></span>10<sup>−6</sup> <a href="/wiki/Second" title="Second">s</a></span></td></tr></tbody></table><style data-mw-deduplicate="TemplateStyles:r1236303919">@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-has-images-with-white-backgrounds img{background:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-has-images-with-white-backgrounds img{background:white}}</style> <p>A <b>microsecond</b> is a unit of <a href="/wiki/Time" title="Time">time</a> in the <a href="/wiki/International_System_of_Units" title="International System of Units">International System of Units</a> (SI) equal to one <a href="/wiki/Millionth" title="Millionth">millionth</a> (0.000001 or 10<sup>−6</sup> or <style data-mw-deduplicate="TemplateStyles:r1154941027">.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style><span class="frac"><span class="num">1</span>⁄<span class="den">1,000,000</span></span>) of a <a href="/wiki/Second" title="Second">second</a>. Its symbol is <b>μs</b>, sometimes simplified to <b>us</b> when <a href="/wiki/Unicode" title="Unicode">Unicode</a> is not available. </p><p>A microsecond is to one second, as one second is to approximately 11.57 days. </p><p>A microsecond is equal to 1000 <a href="/wiki/Nanosecond" title="Nanosecond">nanoseconds</a> or <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">1,000</span></span> of a <a href="/wiki/Millisecond" title="Millisecond">millisecond</a>. Because the next <a href="/wiki/Metric_prefix" title="Metric prefix">SI prefix</a> is 1000 times larger, measurements of 10<sup>−5</sup> and 10<sup>−4</sup> seconds are typically expressed as tens or hundreds of microseconds. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Examples">Examples</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Microsecond&action=edit&section=1" title="Edit section: Examples"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>1 microsecond (1 <a href="/wiki/Mu_(letter)" title="Mu (letter)">μs</a>) – cycle time for <a href="/wiki/Frequency" title="Frequency">frequency</a> <span class="nowrap"><span data-sort-value="7006100000000000000♠"></span>1<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>6</sup> <a href="/wiki/Hertz" title="Hertz">hertz</a></span> (1 MHz), the inverse unit. This corresponds to radio wavelength <a href="/wiki/1_E2_m" class="mw-redirect" title="1 E2 m">300</a> <a href="/wiki/Metre" title="Metre">m</a> (AM <a href="/wiki/Medium_wave" title="Medium wave">medium wave</a> band), as can be calculated by multiplying 1 μs by the <a href="/wiki/Speed_of_light" title="Speed of light">speed of light</a> (approximately <span class="nowrap"><span data-sort-value="7008300000000000000♠"></span>3.00<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>8</sup> m/s</span>).</li> <li>1 microsecond – the length of time of a high-speed, commercial <a href="/wiki/Strobe_light" title="Strobe light">strobe light</a> flash (see <a href="/wiki/Air-gap_flash" title="Air-gap flash">air-gap flash</a>).</li> <li>1 microsecond – <a href="/wiki/Protein_folding" title="Protein folding">protein folding</a> takes place on the order of microseconds (thus this is the speed of <a href="/wiki/Carbon-based_life" title="Carbon-based life">carbon-based life</a>).</li> <li>1.8 microseconds – the amount of time subtracted from the Earth's <a href="/wiki/Day" title="Day">day</a> as a result of the <a href="/wiki/2011_T%C5%8Dhoku_earthquake_and_tsunami" title="2011 Tōhoku earthquake and tsunami">2011 Japanese earthquake</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li> <li>2 microseconds – the lifetime of a <a href="/wiki/Muonium" title="Muonium">muonium</a> particle.</li> <li>2.68 microseconds – the amount of time subtracted from the Earth's day as a result of the <a href="/wiki/2004_Indian_Ocean_earthquake_and_tsunami" title="2004 Indian Ocean earthquake and tsunami">2004 Indian Ocean earthquake</a>.<sup id="cite_ref-IndianOceanNASA_2-0" class="reference"><a href="#cite_note-IndianOceanNASA-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>3.33564095 microseconds – the time taken by <a href="/wiki/Light" title="Light">light</a> to travel one <a href="/wiki/Kilometre" title="Kilometre">kilometre</a> in a <a href="/wiki/Vacuum" title="Vacuum">vacuum</a>.</li> <li>5.4 microseconds – the time taken by light to travel one <a href="/wiki/Mile" title="Mile">mile</a> in a vacuum (or radio waves point-to-point in a near vacuum).</li> <li>8 microseconds – the time taken by light to travel one mile in typical <a href="/wiki/Single-mode_optical_fiber" title="Single-mode optical fiber">single-mode fiber optic cable</a>.</li> <li>10 microseconds (μs) – cycle time for frequency <a href="/wiki/Hertz" title="Hertz">100 kHz</a>, radio wavelength <a href="/wiki/Orders_of_magnitude_(length)" title="Orders of magnitude (length)">3</a> <a href="/wiki/Kilometre" title="Kilometre">km</a>.</li> <li>18 microseconds – net amount per year that the length of the day lengthens, largely due to <a href="/wiki/Tidal_acceleration" title="Tidal acceleration">tidal acceleration</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></li> <li>20.8 microseconds – <a href="/wiki/Sampling_(signal_processing)" title="Sampling (signal processing)">sampling</a> interval for digital audio with 48,000 samples/s.</li> <li>22.7 microseconds – sampling interval for <a href="/wiki/Compact_disc" title="Compact disc">CD</a> audio (44,100 samples/s).</li> <li>38 microseconds – discrepancy in <a href="/wiki/GPS" class="mw-redirect" title="GPS">GPS</a> <a href="/wiki/Satellite" title="Satellite">satellite</a> time per day (compensated by clock speed) due to <a href="/wiki/General_relativity" title="General relativity">relativity</a> .<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></li> <li>50 microseconds – cycle time for highest <a href="/wiki/Hearing_(sense)" class="mw-redirect" title="Hearing (sense)">human-audible</a> tone (20 kHz).</li> <li>50 microseconds – to read the access latency for a modern solid state drive which holds non-volatile computer data.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></li> <li>100 microseconds (0.1 ms) – cycle time for frequency 10 kHz.</li> <li>125 microseconds – common sampling interval for telephone audio (8000 samples/s).<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></li> <li>164 microseconds – <a href="/wiki/Half-life" title="Half-life">half-life</a> of <a href="/wiki/Polonium" title="Polonium">polonium</a>-214.</li> <li>240 microseconds – half-life of <a href="/wiki/Copernicium" title="Copernicium">copernicium</a>-277.</li> <li>260 to 480 microseconds - return trip ICMP ping time, including operating system kernel TCP/IP processing and answer time, between two Gigabit Ethernet devices connected to the same local area network switch fabric.</li> <li>277.8 microseconds – a fourth (a 60th of a 60th of a second), used in astronomical calculations by <a href="/wiki/Al-Biruni" title="Al-Biruni">al-Biruni</a> and <a href="/wiki/Roger_Bacon" title="Roger Bacon">Roger Bacon</a> in 1000 and 1267 AD, respectively.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li> <li>490 microseconds – time for light at a 1550 nm frequency to travel 100 km in a singlemode fiber optic cable (where speed of light is approximately 200 million metres per second due to its <a href="/wiki/Refractive_index" title="Refractive index">index of refraction</a>).</li> <li>The average human eye <a href="/wiki/Blink" class="mw-redirect" title="Blink">blink</a> takes 350,000 microseconds (just over <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">3</span></span> second).</li> <li>The average human finger <a href="/wiki/Finger_snapping" title="Finger snapping">snap</a> takes 150,000 microseconds (just over <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">7</span></span> second).</li> <li>A <a href="/wiki/Flash_(photography)" title="Flash (photography)">camera flash</a> illuminates for 1,000 microseconds.</li> <li>Standard camera <a href="/wiki/Shutter_speed" title="Shutter speed">shutter speed</a> opens the shutter for 4,000 microseconds or 4 milliseconds.</li> <li>584542 years of microseconds fit in 64 bits: (2**64)/(1e6*60*60*24*365.25).</li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Microsecond&action=edit&section=2" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/International_System_of_Units" title="International System of Units">International System of Units</a></li> <li><a href="/wiki/Jiffy_(time)" title="Jiffy (time)">Jiffy (time)</a></li> <li><a href="/wiki/Orders_of_magnitude_(time)" title="Orders of magnitude (time)">Orders of magnitude (time)</a></li> <li><a href="/wiki/Picosecond" title="Picosecond">Picosecond</a></li> <li><a href="/wiki/Millisecond" title="Millisecond">Millisecond</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Microsecond&action=edit&section=3" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div 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Allen</a>. pp. 147–149. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/9986841">9986841</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+chronology+of+ancient+nations%3A+an+English+version+of+the+Arabic+text+of+the+Ath%C3%A2r-ul-B%C3%A2kiya+of+Alb%C3%AEr%C3%BBn%C3%AE%2C+or+%22Vestiges+of+the+Past%22&rft.pages=147-149&rft.pub=W.+H.+Allen&rft.date=1879&rft_id=info%3Aoclcnum%2F9986841&rft.au=al-Biruni&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DpFIEAAAAIAAJ%26q%3Dthirds%26pg%3DPA148&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMicrosecond" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFR_Bacon2000" class="citation book cs1"><a href="/wiki/Roger_Bacon" title="Roger Bacon">R Bacon</a> (2000) [1928]. <i><a href="/wiki/Opus_Majus" title="Opus Majus">The Opus Majus of Roger Bacon</a></i>. translator: BR Belle. <a href="/wiki/University_of_Pennsylvania_Press" title="University of Pennsylvania Press">University of Pennsylvania Press</a>. table facing page 231. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-85506-856-8" title="Special:BookSources/978-1-85506-856-8"><bdi>978-1-85506-856-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Opus+Majus+of+Roger+Bacon&rft.pages=table+facing+page+231&rft.pub=University+of+Pennsylvania+Press&rft.date=2000&rft.isbn=978-1-85506-856-8&rft.au=R+Bacon&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMicrosecond" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Microsecond&action=edit&section=4" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.nist.gov/pml/time-and-frequency-division">The National Institute of Standards and Technology (NIST)</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl 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title="Attosecond">attosecond</a></li> <li><a href="/wiki/Femtosecond" title="Femtosecond">femtosecond</a></li> <li><a href="/wiki/Picosecond" title="Picosecond">picosecond</a></li> <li><a href="/wiki/Nanosecond" title="Nanosecond">nanosecond</a></li> <li><a class="mw-selflink selflink">microsecond</a></li> <li><a href="/wiki/Millisecond" title="Millisecond">millisecond</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Positive powers</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Second" title="Second">second</a></li> <li><a href="/wiki/Kilosecond" class="mw-redirect" title="Kilosecond">kilosecond</a></li> <li><a href="/wiki/Megasecond" class="mw-redirect" title="Megasecond">megasecond</a></li> <li><a href="/wiki/Gigasecond" class="mw-redirect" title="Gigasecond">gigasecond</a></li> <li><a href="/wiki/Terasecond_and_longer" class="mw-redirect" 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