Visitor Information

<!DOCTYPE html> <html lang="en" dir="ltr" prefix="content: http://purl.org/rss/1.0/modules/content/ dc: http://purl.org/dc/terms/ foaf: http://xmlns.com/foaf/0.1/ og: http://ogp.me/ns# rdfs: http://www.w3.org/2000/01/rdf-schema# schema: http://schema.org/ sioc: http://rdfs.org/sioc/ns# sioct: http://rdfs.org/sioc/types# skos: http://www.w3.org/2004/02/skos/core# xsd: http://www.w3.org/2001/XMLSchema# "> <head><script type="text/javascript" src="/_static/js/bundle-playback.js?v=HxkREWBo" charset="utf-8"></script> <script type="text/javascript" src="/_static/js/wombat.js?v=txqj7nKC" charset="utf-8"></script> <script>window.RufflePlayer=window.RufflePlayer||{};window.RufflePlayer.config={"autoplay":"on","unmuteOverlay":"hidden"};</script> <script type="text/javascript" src="/_static/js/ruffle/ruffle.js"></script> <script type="text/javascript"> __wm.init("https://web.archive.org/web"); __wm.wombat("https://www.nist.gov/about-nist/visit","20220614200424","https://web.archive.org/","web","/_static/", "1655237064"); </script> <link rel="stylesheet" type="text/css" href="/_static/css/banner-styles.css?v=S1zqJCYt" /> <link rel="stylesheet" type="text/css" href="/_static/css/iconochive.css?v=3PDvdIFv" />  <meta charset="utf-8"/><script type="text/javascript">(window.NREUM||(NREUM={})).init={ajax:{deny_list:["gov-bam.nr-data.net"]}};(window.NREUM||(NREUM={})).loader_config={licenseKey:"37b7ccb661",applicationID:"1089704227"};window.NREUM||(NREUM={}),__nr_require=function(t,e,n){function r(n){if(!e[n]){var i=e[n]={exports:{}};t[n][0].call(i.exports,function(e){var i=t[n][1][e];return r(i||e)},i,i.exports)}return e[n].exports}if("function"==typeof __nr_require)return __nr_require;for(var i=0;i<n.length;i++)r(n[i]);return r}({1:[function(t,e,n){function r(){}function i(t,e,n,r){return function(){return s.recordSupportability("API/"+e+"/called"),o(t+e,[u.now()].concat(c(arguments)),n?null:this,r),n?void 0:this}}var o=t("handle"),a=t(9),c=t(10),f=t("ee").get("tracer"),u=t("loader"),s=t(4),d=NREUM;"undefined"==typeof window.newrelic&&(newrelic=d);var p=["setPageViewName","setCustomAttribute","setErrorHandler","finished","addToTrace","inlineHit","addRelease"],l="api-",v=l+"ixn-";a(p,function(t,e){d[e]=i(l,e,!0,"api")}),d.addPageAction=i(l,"addPageAction",!0),d.setCurrentRouteName=i(l,"routeName",!0),e.exports=newrelic,d.interaction=function(){return(new r).get()};var m=r.prototype={createTracer:function(t,e){var n={},r=this,i="function"==typeof e;return o(v+"tracer",[u.now(),t,n],r),function(){if(f.emit((i?"":"no-")+"fn-start",[u.now(),r,i],n),i)try{return e.apply(this,arguments)}catch(t){throw f.emit("fn-err",[arguments,this,t],n),t}finally{f.emit("fn-end",[u.now()],n)}}}};a("actionText,setName,setAttribute,save,ignore,onEnd,getContext,end,get".split(","),function(t,e){m[e]=i(v,e)}),newrelic.noticeError=function(t,e){"string"==typeof t&&(t=new Error(t)),s.recordSupportability("API/noticeError/called"),o("err",[t,u.now(),!1,e])}},{}],2:[function(t,e,n){function r(t){if(NREUM.init){for(var e=NREUM.init,n=t.split("."),r=0;r<n.length-1;r++)if(e=e[n[r]],"object"!=typeof e)return;return e=e[n[n.length-1]]}}e.exports={getConfiguration:r}},{}],3:[function(t,e,n){var r=!1;try{var i=Object.defineProperty({},"passive",{get:function(){r=!0}});window.addEventListener("testPassive",null,i),window.removeEventListener("testPassive",null,i)}catch(o){}e.exports=function(t){return r?{passive:!0,capture:!!t}:!!t}},{}],4:[function(t,e,n){function r(t,e){var n=[a,t,{name:t},e];return o("storeMetric",n,null,"api"),n}function i(t,e){var n=[c,t,{name:t},e];return o("storeEventMetrics",n,null,"api"),n}var o=t("handle"),a="sm",c="cm";e.exports={constants:{SUPPORTABILITY_METRIC:a,CUSTOM_METRIC:c},recordSupportability:r,recordCustom:i}},{}],5:[function(t,e,n){function r(){return c.exists&&performance.now?Math.round(performance.now()):(o=Math.max((new Date).getTime(),o))-a}function i(){return o}var o=(new Date).getTime(),a=o,c=t(11);e.exports=r,e.exports.offset=a,e.exports.getLastTimestamp=i},{}],6:[function(t,e,n){function r(t,e){var n=t.getEntries();n.forEach(function(t){"first-paint"===t.name?l("timing",["fp",Math.floor(t.startTime)]):"first-contentful-paint"===t.name&&l("timing",["fcp",Math.floor(t.startTime)])})}function i(t,e){var n=t.getEntries();if(n.length>0){var r=n[n.length-1];if(u&&u<r.startTime)return;var i=[r],o=a({});o&&i.push(o),l("lcp",i)}}function o(t){t.getEntries().forEach(function(t){t.hadRecentInput||l("cls",[t])})}function a(t){var e=navigator.connection||navigator.mozConnection||navigator.webkitConnection;if(e)return e.type&&(t["net-type"]=e.type),e.effectiveType&&(t["net-etype"]=e.effectiveType),e.rtt&&(t["net-rtt"]=e.rtt),e.downlink&&(t["net-dlink"]=e.downlink),t}function c(t){if(t instanceof y&&!w){var e=Math.round(t.timeStamp),n={type:t.type};a(n),e<=v.now()?n.fid=v.now()-e:e>v.offset&&e<=Date.now()?(e-=v.offset,n.fid=v.now()-e):e=v.now(),w=!0,l("timing",["fi",e,n])}}function f(t){"hidden"===t&&(u=v.now(),l("pageHide",[u]))}if(!("init"in NREUM&&"page_view_timing"in NREUM.init&&"enabled"in NREUM.init.page_view_timing&&NREUM.init.page_view_timing.enabled===!1)){var u,s,d,p,l=t("handle"),v=t("loader"),m=t(8),g=t(3),y=NREUM.o.EV;if("PerformanceObserver"in window&&"function"==typeof window.PerformanceObserver){s=new PerformanceObserver(r);try{s.observe({entryTypes:["paint"]})}catch(h){}d=new PerformanceObserver(i);try{d.observe({entryTypes:["largest-contentful-paint"]})}catch(h){}p=new PerformanceObserver(o);try{p.observe({type:"layout-shift",buffered:!0})}catch(h){}}if("addEventListener"in document){var w=!1,b=["click","keydown","mousedown","pointerdown","touchstart"];b.forEach(function(t){document.addEventListener(t,c,g(!1))})}m(f)}},{}],7:[function(t,e,n){function r(t,e){if(!i)return!1;if(t!==i)return!1;if(!e)return!0;if(!o)return!1;for(var n=o.split("."),r=e.split("."),a=0;a<r.length;a++)if(r[a]!==n[a])return!1;return!0}var i=null,o=null,a=/Version\/(\S+)\s+Safari/;if(navigator.userAgent){var c=navigator.userAgent,f=c.match(a);f&&c.indexOf("Chrome")===-1&&c.indexOf("Chromium")===-1&&(i="Safari",o=f[1])}e.exports={agent:i,version:o,match:r}},{}],8:[function(t,e,n){function r(t){function e(){t(c&&document[c]?document[c]:document[o]?"hidden":"visible")}"addEventListener"in document&&a&&document.addEventListener(a,e,i(!1))}var i=t(3);e.exports=r;var o,a,c;"undefined"!=typeof document.hidden?(o="hidden",a="visibilitychange",c="visibilityState"):"undefined"!=typeof document.msHidden?(o="msHidden",a="msvisibilitychange"):"undefined"!=typeof document.webkitHidden&&(o="webkitHidden",a="webkitvisibilitychange",c="webkitVisibilityState")},{}],9:[function(t,e,n){function r(t,e){var n=[],r="",o=0;for(r in t)i.call(t,r)&&(n[o]=e(r,t[r]),o+=1);return n}var i=Object.prototype.hasOwnProperty;e.exports=r},{}],10:[function(t,e,n){function r(t,e,n){e||(e=0),"undefined"==typeof n&&(n=t?t.length:0);for(var r=-1,i=n-e||0,o=Array(i<0?0:i);++r<i;)o[r]=t[e+r];return o}e.exports=r},{}],11:[function(t,e,n){e.exports={exists:"undefined"!=typeof window.performance&&window.performance.timing&&"undefined"!=typeof window.performance.timing.navigationStart}},{}],ee:[function(t,e,n){function r(){}function i(t){function e(t){return t&&t instanceof r?t:t?u(t,f,a):a()}function n(n,r,i,o,a){if(a!==!1&&(a=!0),!l.aborted||o){t&&a&&t(n,r,i);for(var c=e(i),f=m(n),u=f.length,s=0;s<u;s++)f[s].apply(c,r);var p=d[w[n]];return p&&p.push([b,n,r,c]),c}}function o(t,e){h[t]=m(t).concat(e)}function v(t,e){var n=h[t];if(n)for(var r=0;r<n.length;r++)n[r]===e&&n.splice(r,1)}function m(t){return h[t]||[]}function g(t){return p[t]=p[t]||i(n)}function y(t,e){l.aborted||s(t,function(t,n){e=e||"feature",w[n]=e,e in d||(d[e]=[])})}var h={},w={},b={on:o,addEventListener:o,removeEventListener:v,emit:n,get:g,listeners:m,context:e,buffer:y,abort:c,aborted:!1};return b}function o(t){return u(t,f,a)}function a(){return new r}function c(){(d.api||d.feature)&&(l.aborted=!0,d=l.backlog={})}var f="nr@context",u=t("gos"),s=t(9),d={},p={},l=e.exports=i();e.exports.getOrSetContext=o,l.backlog=d},{}],gos:[function(t,e,n){function r(t,e,n){if(i.call(t,e))return t[e];var r=n();if(Object.defineProperty&&Object.keys)try{return Object.defineProperty(t,e,{value:r,writable:!0,enumerable:!1}),r}catch(o){}return t[e]=r,r}var i=Object.prototype.hasOwnProperty;e.exports=r},{}],handle:[function(t,e,n){function r(t,e,n,r){i.buffer([t],r),i.emit(t,e,n)}var i=t("ee").get("handle");e.exports=r,r.ee=i},{}],id:[function(t,e,n){function r(t){var e=typeof t;return!t||"object"!==e&&"function"!==e?-1:t===window?0:a(t,o,function(){return i++})}var i=1,o="nr@id",a=t("gos");e.exports=r},{}],loader:[function(t,e,n){function r(){if(!M++){var t=T.info=NREUM.info,e=m.getElementsByTagName("script")[0];if(setTimeout(u.abort,3e4),!(t&&t.licenseKey&&t.applicationID&&e))return u.abort();f(x,function(e,n){t[e]||(t[e]=n)});var n=a();c("mark",["onload",n+T.offset],null,"api"),c("timing",["load",n]);var r=m.createElement("script");0===t.agent.indexOf("http://")||0===t.agent.indexOf("https://")?r.src=t.agent:r.src=l+"://"+t.agent,e.parentNode.insertBefore(r,e)}}function i(){"complete"===m.readyState&&o()}function o(){c("mark",["domContent",a()+T.offset],null,"api")}var a=t(5),c=t("handle"),f=t(9),u=t("ee"),s=t(7),d=t(2),p=t(3),l=d.getConfiguration("ssl")===!1?"http":"https",v=window,m=v.document,g="addEventListener",y="attachEvent",h=v.XMLHttpRequest,w=h&&h.prototype,b=!1;NREUM.o={ST:setTimeout,SI:v.setImmediate,CT:clearTimeout,XHR:h,REQ:v.Request,EV:v.Event,PR:v.Promise,MO:v.MutationObserver};var E=""+location,x={beacon:"bam.nr-data.net",errorBeacon:"bam.nr-data.net",agent:"js-agent.newrelic.com/nr-1216.min.js"},O=h&&w&&w[g]&&!/CriOS/.test(navigator.userAgent),T=e.exports={offset:a.getLastTimestamp(),now:a,origin:E,features:{},xhrWrappable:O,userAgent:s,disabled:b};if(!b){t(1),t(6),m[g]?(m[g]("DOMContentLoaded",o,p(!1)),v[g]("load",r,p(!1))):(m[y]("onreadystatechange",i),v[y]("onload",r)),c("mark",["firstbyte",a.getLastTimestamp()],null,"api");var M=0}},{}],"wrap-function":[function(t,e,n){function r(t,e){function n(e,n,r,f,u){function nrWrapper(){var o,a,s,p;try{a=this,o=d(arguments),s="function"==typeof r?r(o,a):r||{}}catch(l){i([l,"",[o,a,f],s],t)}c(n+"start",[o,a,f],s,u);try{return p=e.apply(a,o)}catch(v){throw c(n+"err",[o,a,v],s,u),v}finally{c(n+"end",[o,a,p],s,u)}}return a(e)?e:(n||(n=""),nrWrapper[p]=e,o(e,nrWrapper,t),nrWrapper)}function r(t,e,r,i,o){r||(r="");var c,f,u,s="-"===r.charAt(0);for(u=0;u<e.length;u++)f=e[u],c=t[f],a(c)||(t[f]=n(c,s?f+r:r,i,f,o))}function c(n,r,o,a){if(!v||e){var c=v;v=!0;try{t.emit(n,r,o,e,a)}catch(f){i([f,n,r,o],t)}v=c}}return t||(t=s),n.inPlace=r,n.flag=p,n}function i(t,e){e||(e=s);try{e.emit("internal-error",t)}catch(n){}}function o(t,e,n){if(Object.defineProperty&&Object.keys)try{var r=Object.keys(t);return r.forEach(function(n){Object.defineProperty(e,n,{get:function(){return t[n]},set:function(e){return t[n]=e,e}})}),e}catch(o){i([o],n)}for(var a in t)l.call(t,a)&&(e[a]=t[a]);return e}function a(t){return!(t&&t instanceof Function&&t.apply&&!t[p])}function c(t,e){var n=e(t);return n[p]=t,o(t,n,s),n}function f(t,e,n){var r=t[e];t[e]=c(r,n)}function u(){for(var t=arguments.length,e=new Array(t),n=0;n<t;++n)e[n]=arguments[n];return e}var s=t("ee"),d=t(10),p="nr@original",l=Object.prototype.hasOwnProperty,v=!1;e.exports=r,e.exports.wrapFunction=c,e.exports.wrapInPlace=f,e.exports.argsToArray=u},{}]},{},["loader"]);</script> <noscript><style>form.antibot * :not(.antibot-message) { display: none !important; }</style> </noscript><script>(function(i,s,o,g,r,a,m){i["GoogleAnalyticsObject"]=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)})(window,document,"script","https://web.archive.org/web/20220614200424/https://www.google-analytics.com/analytics.js","ga");ga("create", "UA-66610693-3", {"cookieDomain":"auto"});ga("require", "linkid", "linkid.js");ga("set", "anonymizeIp", true);ga("set", "dimension2", "Visitor Information");ga("set", "dimension3", "1084291");ga("set", "dimension7", "Basic page");ga("send", "pageview");ga('create', 'UA-33523145-1', 'auto', 'NISTGSA'); ga('NISTGSA.send', 'pageview');</script> <link rel="canonical" href="https://web.archive.org/web/20220614200424/https://www.nist.gov/about-nist/visit"/> <link rel="shortlink" href="https://web.archive.org/web/20220614200424/https://www.nist.gov/node/1084291"/> <meta name="description" content="NIST operates in two main locations: Gaithersburg, Maryland, and Boulder, Colorado. NIST jointly operat"/> <meta name="dcterms.title" content="Visitor Information"/> <meta name="dcterms.creator" content="kbeall"/> <meta name="dcterms.description" content="NIST operates in two main locations: Gaithersburg, Maryland, and Boulder, Colorado. NIST jointly operat"/> <meta name="dcterms.date" content="2016-07-29T15:06-04:00"/> <meta name="dcterms.type" content="text"/> <meta name="dcterms.format" content="text/html"/> <meta name="dcterms.identifier" content="https://www.nist.gov/about-nist/visit"/> <meta name="dcterms.modified" content="2022-05-23T09:56-04:00"/> <meta property="og:site_name" content="NIST"/> <meta property="og:type" content="Article"/> <meta property="og:url" content="https://web.archive.org/web/20220614200424/https://www.nist.gov/about-nist/visit"/> <meta property="og:title" content="Visitor Information"/> <meta property="og:description" content="NIST operates in two main locations: Gaithersburg, Maryland, and Boulder, Colorado. NIST jointly operat"/> <meta property="article:modified_time" content="2022-05-23T09:56:35-04:00"/> <meta name="google-site-verification" content="QMu0ODkER3rN5hLcMLqNVf7e3bkjYsNLTuhqfH48jCA"/> <meta name="Generator" content="Drupal 9 (https://www.drupal.org)"/> <meta name="MobileOptimized" content="width"/> <meta name="HandheldFriendly" content="true"/> <meta name="viewport" content="width=device-width, initial-scale=1.0"/> <link rel="icon" href="/web/20220614200424im_/https://www.nist.gov/themes/custom/nist_www/favicon.ico" type="image/vnd.microsoft.icon"/> <link rel="next" href="/web/20220614200424/https://www.nist.gov/about-nist/visit/campus-access-and-security"/> <title>Visitor Information | NIST</title> <link rel="stylesheet" media="all" href="/web/20220614200424cs_/https://www.nist.gov/sites/default/files/css/css_6hZQHyso1BdM3wkKYS6pASIT8XgzD_EDj_wnZVp8nEs.css"/> <link rel="stylesheet" media="screen" href="/web/20220614200424cs_/https://www.nist.gov/sites/default/files/css/css_gD8QmGaNfUQuThtjB-S0EwEOZZNJP1QfUU1bDdLHbMU.css"/> <link rel="stylesheet" media="print" href="/web/20220614200424cs_/https://www.nist.gov/sites/default/files/css/css_zbjDhj-AmeVwgu9y0DlPwEfp7l-a5BpoK3MpoGmRB6o.css"/> <link rel="stylesheet" media="all" href="/web/20220614200424cs_/https://www.nist.gov/sites/default/files/css/css_PV0KmreUx3hVeYI6yGypf71UDz9BSQl1Z5DjiESDh-Y.css"/> <link rel="stylesheet" media="screen" href="/web/20220614200424cs_/https://www.nist.gov/sites/default/files/css/css_qr_fJizZewHePilGkILqTXsCn4UKgjcDT3LIU0n5uMM.css"/> <script src="https://web.archive.org/web/20220614200424js_/https://script.crazyegg.com/pages/scripts/0039/8570.js" async></script> <script src="/web/20220614200424js_/https://www.nist.gov/sites/default/files/js/js_-dbYZ4JxrJ1JstYSHl6hMbgz-yFcPPqDY0VSXVJZCIo.js"></script> </head> <body class="node-1084291"> <a href="#main-content" class="visually-hidden focusable"> Skip to main content </a> <div class="dialog-off-canvas-main-canvas" data-off-canvas-main-canvas>  <section class="usa-banner" aria-label="Official government website"> <div class="usa-accordion"> <header class="usa-banner__header"> <div class="usa-banner__inner"> <div class="grid-col-auto"> <img class="usa-banner__header-flag" src="/web/20220614200424im_/https://www.nist.gov/libraries/nist-component-library/dist/img/us_flag_small.png" alt="U.S. flag"> </div> <div class="grid-col-fill tablet:grid-col-auto"> <p class="usa-banner__header-text">An official website of the United States government</p> <p class="usa-banner__header-action" aria-hidden="true">Here’s how you know</p> </div> <button class="usa-accordion__button usa-banner__button" aria-expanded="false" aria-controls="gov-banner-default"> <span class="usa-banner__button-text">Here’s how you know</span> </button> </div> </header> <div class="usa-banner__content usa-accordion__content" id="gov-banner-default"> <div class="grid-row grid-gap-lg"> <div class="usa-banner__guidance tablet:grid-col-6"> <img class="usa-banner__icon usa-media-block__img" src="/web/20220614200424im_/https://www.nist.gov/libraries/nist-component-library/dist/img/icon-dot-gov.svg" role="img" alt="" aria-hidden="true"> <div class="usa-media-block__body"> <p> <strong>Official websites use .gov</strong> <br/> A <strong>.gov</strong> website belongs to an official government organization in the United States. </p> </div> </div> <div class="usa-banner__guidance tablet:grid-col-6"> <img class="usa-banner__icon usa-media-block__img" src="/web/20220614200424im_/https://www.nist.gov/libraries/nist-component-library/dist/img/icon-https.svg" role="img" alt="" aria-hidden="true"> <div class="usa-media-block__body"> <p> <strong>Secure .gov websites use HTTPS</strong> <br/> A <strong>lock</strong> ( <span class="icon-lock"> <svg xmlns="http://www.w3.org/2000/svg" width="52" height="64" viewbox="0 0 52 64" class="usa-banner__lock-image" role="img" aria-labelledby="banner-lock-title banner-lock-description" focusable="false"> <title id="banner-lock-title">Lock</title> <desc id="banner-lock-description">A locked padlock</desc><path fill="#000000" fill-rule="evenodd" d="M26 0c10.493 0 19 8.507 19 19v9h3a4 4 0 0 1 4 4v28a4 4 0 0 1-4 4H4a4 4 0 0 1-4-4V32a4 4 0 0 1 4-4h3v-9C7 8.507 15.507 0 26 0zm0 8c-5.979 0-10.843 4.77-10.996 10.712L15 19v9h22v-9c0-6.075-4.925-11-11-11z"/></svg> </span> ) or <strong>https://</strong> means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. </p> </div> </div> </div> </div> </div> </section>   <div class="nist-print-header" style="display:none;"> <p class="nist-print-header__url">https://www.nist.gov/about-nist/visit</p> <img class="nist-print-header__logo" width="289" height="38" src="/web/20220614200424im_/https://www.nist.gov/libraries/nist-component-library/dist/img/logo/nist_logo_sidestack.svg" alt="National Institute of Standards and Technology"/> </div> <div class="usa-overlay"></div> <header class="usa-header nist-header--www nist-header--minimal" role="banner"> <div class="usa-navbar"> <div class="usa-logo flex-fill"> <a href="/web/20220614200424/https://www.nist.gov/" title="National Institute of Standards and Technology" aria-label="Home"> <img src="/web/20220614200424im_/https://www.nist.gov/libraries/nist-component-library/dist/img/logo/logo.svg" alt="National Institute of Standards and Technology"/> </a> </div> <div class="usa-header__right grid-row flex-auto"> <div class="grid-col-fill nist-header__search-group"> <form class="usa-search usa-search--small" accept-charset="UTF-8" action="https://web.archive.org/web/20220614200424/https://www.nist.gov/fusion-search" id="search_form" method="get"> <div role="search"> <label class="usa-sr-only" for="search-form">Search NIST</label> <input class="usa-input" id="search-form" type="search" name="s" placeholder="Search NIST" required=""> <button class="usa-button" type="submit"><img src="/web/20220614200424im_/https://www.nist.gov/libraries/nist-component-library/dist/img/usa-icons-bg/search--white.svg" class="usa-search__submit-icon" alt="Search"></button> </div> </form> </div> <div class="grid-col-auto padding-left-1"> <button class="usa-menu-btn">Menu</button> </div> </div> </div> <nav aria-label="Primary navigation" class="usa-nav"> <div class="usa-nav__inner"> <button class="usa-nav__close">Close</button> <ul class="usa-nav__primary usa-accordion"> <li class="usa-nav__primary-item"> <button class="usa-accordion__button usa-nav__link" aria-expanded="false" aria-controls="primary_menu-1"><span>Topics</span></button> <div id="primary_menu-1" class="usa-nav__submenu usa-megamenu"> <div class="grid-row"> <div class="tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/topics" class="usa-nav__link">All Topics</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/advanced-communications" class="usa-nav__link">Advanced communications</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/artificial-intelligence" class="usa-nav__link">Artificial intelligence</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/bioscience" class="usa-nav__link">Bioscience</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/buildings-construction" class="usa-nav__link">Buildings and construction</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/chemistry" class="usa-nav__link">Chemistry</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/climate" class="usa-nav__link">Climate</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/cybersecurity" class="usa-nav__link">Cybersecurity</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/electronics" class="usa-nav__link">Electronics</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/energy" class="usa-nav__link">Energy</a> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/environment" class="usa-nav__link">Environment</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/fire" class="usa-nav__link">Fire</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/forensic-science" class="usa-nav__link">Forensic science</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/health" class="usa-nav__link">Health</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/information-technology" class="usa-nav__link">Information technology</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/infrastructure" class="usa-nav__link">Infrastructure</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/manufacturing" class="usa-nav__link">Manufacturing</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/materials" class="usa-nav__link">Materials</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/mathematics-statistics" class="usa-nav__link">Mathematics and statistics</a> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/metrology" class="usa-nav__link">Metrology</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/nanotechnology" class="usa-nav__link">Nanotechnology</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/neutron-research" class="usa-nav__link">Neutron research</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/performance-excellence" class="usa-nav__link">Performance excellence</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/physics" class="usa-nav__link">Physics</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/public-safety" class="usa-nav__link">Public safety</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/resilience" class="usa-nav__link">Resilience</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/standards" class="usa-nav__link">Standards</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/transportation" class="usa-nav__link">Transportation</a> </li> </ul> </div> </div> </div> </li> <li class="usa-nav__primary-item"> <a class="usa-nav__link" href="/web/20220614200424/https://www.nist.gov/publications">Publications</a> </li> <li class="usa-nav__primary-item"> <button class="usa-accordion__button usa-nav__link" aria-expanded="false" aria-controls="primary_menu-3"><span>Labs & Major Programs</span></button> <div id="primary_menu-3" class="usa-nav__submenu usa-megamenu"> <div class="grid-row"> <div class="tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/labs-major-programs/laboratories" class="usa-nav__link">Laboratories</a> <ul class="usa-nav__submenu-list"> <li> <a href="/web/20220614200424/https://www.nist.gov/ctl" class="usa-nav__link">Communications Technology Laboratory</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/el" class="usa-nav__link">Engineering Laboratory</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/itl" class="usa-nav__link">Information Technology Laboratory</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/mml" class="usa-nav__link">Material Measurement Laboratory</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/pml" class="usa-nav__link">Physical Measurement Laboratory</a> </li> </ul> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/labs-major-programs/user-facilities" class="usa-nav__link">User Facilities</a> <ul class="usa-nav__submenu-list"> <li> <a href="/web/20220614200424/https://www.nist.gov/ncnr" class="usa-nav__link">NIST Center for Neutron Research</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/cnst" class="usa-nav__link">CNST NanoFab</a> </li> </ul> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/labs-major-programs/research-test-beds" class="usa-nav__link">Research Test Beds</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/laboratories/projects-programs" class="usa-nav__link">Research Projects</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/laboratories/tools-instruments" class="usa-nav__link">Tools & Instruments</a> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/labs-major-programs/major-programs" class="usa-nav__link">Major Programs</a> <ul class="usa-nav__submenu-list"> <li> <a href="/web/20220614200424/https://www.nist.gov/baldrige" class="usa-nav__link">Baldrige Performance Excellence Program</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/mep" class="usa-nav__link">Manufacturing Extension Partnership (MEP)</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/oam" class="usa-nav__link">Office of Advanced Manufacturing</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/special-programs-office-spo" class="usa-nav__link">Special Programs Office</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/tpo" class="usa-nav__link">Technology Partnerships Office</a> </li> </ul> </li> </ul> </div> </div> </div> </li> <li class="usa-nav__primary-item"> <button class="usa-accordion__button usa-nav__link" aria-expanded="false" aria-controls="primary_menu-4"><span>Services & Resources</span></button> <div id="primary_menu-4" class="usa-nav__submenu usa-megamenu"> <div class="grid-row"> <div class="tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/services-resources/standards-and-measurements" class="usa-nav__link">Standards and Measurements</a> <ul class="usa-nav__submenu-list"> <li> <a href="/web/20220614200424/https://www.nist.gov/calibrations" class="usa-nav__link">Calibration Services</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nvlap" class="usa-nav__link">Laboratory Accreditation (NVLAP)</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-quality-system" class="usa-nav__link">Quality System</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/srm" class="usa-nav__link">Standard Reference Materials (SRMs)</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/standardsgov" class="usa-nav__link">Standards.gov</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/pml/time-and-frequency-division/time-services" class="usa-nav__link">Time Services</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/pml/owm" class="usa-nav__link">Office of Weights and Measures</a> </li> </ul> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/services-resources/software" class="usa-nav__link">Software</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/data" class="usa-nav__link">Data</a> <ul class="usa-nav__submenu-list"> <li> <a href="https://web.archive.org/web/20220614200424/https://webbook.nist.gov/chemistry/" class="usa-nav__link">Chemistry WebBook</a> </li> <li> <a href="https://web.archive.org/web/20220614200424/https://nvd.nist.gov/" class="usa-nav__link">National Vulnerability Database</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/pml/productsservices/physical-reference-data" class="usa-nav__link">Physical Reference Data</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/srd" class="usa-nav__link">Standard Reference Data (SRD)</a> </li> </ul> </li> <li class="usa-nav__submenu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/shop" class="usa-nav__link">Storefront</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/tpo" class="usa-nav__link">License & Patents</a> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="https://web.archive.org/web/20220614200424/http://csrc.nist.gov/" class="usa-nav__link">Computer Security Resource Center (CSRC)</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/nist-research-library" class="usa-nav__link">NIST Research Library</a> </li> </ul> </div> </div> </div> </li> <li class="usa-nav__primary-item"> <button class="usa-accordion__button usa-nav__link" aria-expanded="false" aria-controls="primary_menu-5"><span>News & Events</span></button> <div id="primary_menu-5" class="usa-nav__submenu usa-megamenu"> <div class="grid-row"> <div class="tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/news-events/news" class="usa-nav__link">News </a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/news-events/events" class="usa-nav__link">Events</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/blogs" class="usa-nav__link">Blogs</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/feature-stories" class="usa-nav__link">Feature Stories</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/awards" class="usa-nav__link">Awards</a> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/video-gallery" class="usa-nav__link">Video Gallery</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/image-gallery" class="usa-nav__link">Image Gallery</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/director/pao/media-contacts" class="usa-nav__link">Media Contacts</a> </li> </ul> </div> </div> </div> </li> <li class="usa-nav__primary-item"> <button class="usa-accordion__button usa-nav__link usa-current" aria-expanded="false" aria-controls="primary_menu-6"><span>About NIST</span></button> <div id="primary_menu-6" class="usa-nav__submenu usa-megamenu"> <div class="grid-row"> <div class="tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist" class="usa-nav__link">About Us</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/contact-us" class="usa-nav__link">Contact Us</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit" class="usa-nav__link usa-current">Visit</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/careers" class="usa-nav__link">Careers</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/director/nist-organization-structure" class="usa-nav__link">Our Organization</a> <ul class="usa-nav__submenu-list"> <li> <a href="/web/20220614200424/https://www.nist.gov/director" class="usa-nav__link">Office of the Director</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/director/nist-organization-structure/budget-planning" class="usa-nav__link">Budget & Planning</a> </li> </ul> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/industry-impacts" class="usa-nav__link">Industry Impacts</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/work-nist" class="usa-nav__link">Work with NIST</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/history" class="usa-nav__link">History</a> <ul class="usa-nav__submenu-list"> <li> <a href="https://web.archive.org/web/20220614200424/http://nistdigitalarchives.contentdm.oclc.org/" class="usa-nav__link">NIST Digital Archives</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-museum" class="usa-nav__link">NIST Museum</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel" class="usa-nav__link">NIST and the Nobel</a> </li> </ul> </li> <li class="usa-nav__submenu-item"> <a href="/web/20220614200424/https://www.nist.gov/education" class="usa-nav__link">Resources for Kids</a> </li> </ul> </div> </div> </div> </li> </ul> </div> </nav> </header>  <div class="grid-container"> <div data-drupal-messages-fallback class="hidden"></div> </div> <div id="block-nist-www-content" class="nist-block"> <section class="nist-page__content usa-section clearfix"> <a id="main-content" tabindex="-1"></a> <div class="grid-container margin-top-4"> <div class="grid-row grid-gap-6"> <aside class="nist-page__region nist-page__region--sidebar-first tablet-lg:grid-col-4 desktop-lg:grid-col-3"> <div> <div class="nist-block nist-block--book-nav"> <div class="display-none tablet-lg:display-block"> <div class="views-element-container"><div class="js-view-dom-id-9f3f4636db48f5130998e42418d11c0abdc0c3708b337a306f91e9d9a87fb300"> </div> </div> </div> <nav> <ul class="usa-sidenav usa-accordion usa-sidenav--book"> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit" class="usa-current is-active" data-drupal-link-system-path="node/1084291" hreflang="en">Visitor Information</a> <button class="usa-accordion__button" aria-expanded="true" aria-controls="book-1"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="book-1" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit/campus-access-and-security" data-drupal-link-system-path="node/773771" hreflang="en">Campus Access and Security</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit/getting-nist-gaithersburg" data-drupal-link-system-path="node/1084296" hreflang="en">Getting to NIST Gaithersburg</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit/parking-and-getting-around-gaithersburg" data-drupal-link-system-path="node/1089496" hreflang="en">Parking and Getting Around - Gaithersburg</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit/planning-your-visit-gaithersburg" data-drupal-link-system-path="node/1089526" hreflang="en">Planning Your Visit – Gaithersburg</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit/getting-nist-boulder" data-drupal-link-system-path="node/1084301" hreflang="en">Getting to NIST Boulder</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit/parking-and-getting-around-boulder" data-drupal-link-system-path="node/1089511" hreflang="en">Parking and Getting Around - Boulder</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit/planning-your-visit-boulder" data-drupal-link-system-path="node/1089531" hreflang="en">Planning Your Visit – Boulder</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit/nist-visitor-associate-and-contractor-protocols-mitigating-covid-19-exposure-nist" data-drupal-link-system-path="node/1624521" hreflang="en">NIST Visitor, Associate and Contractor Protocols for Mitigating COVID-19 Exposure on NIST Campuses</a> </li> </ul> </li> </ul> </nav> </div> <div class="nist-block nist-block--main-menu"> <nav> <ul class="usa-sidenav usa-accordion "> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist" data-drupal-link-system-path="">About Us</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/contact-us" data-drupal-link-system-path="">Contact Us</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit" class="usa-current" data-drupal-link-system-path="">Visit</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/careers" data-drupal-link-system-path="">Careers</a> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20220614200424/https://www.nist.gov/director/nist-organization-structure" data-drupal-link-system-path="">Our Organization</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="main-5"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="main-5" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/director" data-drupal-link-system-path="">Office of the Director</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/director/nist-organization-structure/budget-planning" data-drupal-link-system-path="">Budget & Planning</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/industry-impacts" data-drupal-link-system-path="">Industry Impacts</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/work-nist" data-drupal-link-system-path="">Work with NIST</a> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20220614200424/https://www.nist.gov/history" data-drupal-link-system-path="">History</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="main-8"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="main-8" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20220614200424/http://nistdigitalarchives.contentdm.oclc.org/" data-drupal-link-system-path="">NIST Digital Archives</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/nist-museum" data-drupal-link-system-path="">NIST Museum</a> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel" data-drupal-link-system-path="">NIST and the Nobel</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="main-8-3"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="main-8-3" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/bill-phillips" data-drupal-link-system-path="">Bill Phillips</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="main-8-3-1"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="main-8-3-1" class="usa-sidenav__sublist"> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/bill-phillips/context-discovery-bill-phillips" data-drupal-link-system-path="">Context of a Discovery: Bill Phillips</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/bill-phillips/nobel-moment-bill-phillips" data-drupal-link-system-path="">The Nobel Moment: Bill Phillips</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/bill-phillips/person-behind-nobel-prize-bill-phillips" data-drupal-link-system-path="">The Person behind the Nobel Prize: Bill Phillips</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/bill-phillips/prizes-legacy-bill-phillips" data-drupal-link-system-path="">The Prize’s Legacy: Bill Phillips</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/bill-phillips/what-excites-bill-phillips-science-today" data-drupal-link-system-path="">What excites Bill Phillips in science today?</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dan-shechtman" data-drupal-link-system-path="">Dan Shechtman</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="main-8-3-2"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="main-8-3-2" class="usa-sidenav__sublist"> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dan-shechtman/context-discovery-dan-shechtman" data-drupal-link-system-path="">Context of a Discovery: Dan Shechtman</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dan-shechtman/nobel-moment-dan-shechtman" data-drupal-link-system-path="">The Nobel Moment: Dan Shechtman</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dan-shechtman/person-behind-nobel-prize-dan-shechtman" data-drupal-link-system-path="">The Person behind the Nobel Prize: Dan Shechtman</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dan-shechtman/prizes-legacy-dan-shechtman" data-drupal-link-system-path="">The Prize’s Legacy: Dan Shechtman</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dan-shechtman/what-excites-and-inspires-dan-shechtman-science-today" data-drupal-link-system-path="">What excites and inspires Dan Shechtman in science today?</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dave-wineland" data-drupal-link-system-path="">Dave Wineland</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="main-8-3-3"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="main-8-3-3" class="usa-sidenav__sublist"> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dave-wineland/context-discovery-dave-wineland" data-drupal-link-system-path="">Context of a Discovery: Dave Wineland</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dave-wineland/outside-work-dave-wineland" data-drupal-link-system-path="">Outside of Work: Dave Wineland</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dave-wineland/nobel-moments-dave-wineland" data-drupal-link-system-path="">The Nobel Moments: Dave Wineland</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dave-wineland/person-behind-nobel-prize-dave-wineland" data-drupal-link-system-path="">The Person Behind the Nobel Prize: Dave Wineland</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dave-wineland/prizes-legacy-dave-wineland" data-drupal-link-system-path="">The Prize’s Legacy: Dave Wineland</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/dave-wineland/what-excites-and-inspires-david-wineland-science-today" data-drupal-link-system-path="">What excites and inspires David Wineland in science today?</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/eric-cornell" data-drupal-link-system-path="">Eric Cornell</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="main-8-3-4"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="main-8-3-4" class="usa-sidenav__sublist"> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/eric-cornell/context-discovery-eric-cornell" data-drupal-link-system-path="">Context of a Discovery: Eric Cornell</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/eric-cornell/nobel-moment-eric-cornell" data-drupal-link-system-path="">The Nobel Moment: Eric Cornell</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/eric-cornell/person-behind-nobel-prize-eric-cornell" data-drupal-link-system-path="">The Person behind the Nobel Prize: Eric Cornell</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/eric-cornell/prizes-legacy-eric-cornell" data-drupal-link-system-path="">The Prize’s Legacy: Eric Cornell</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/eric-cornell/what-excites-eric-cornell-science-today" data-drupal-link-system-path="">What excites Eric Cornell in science today?</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/jan-hall" data-drupal-link-system-path="">Jan Hall</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="main-8-3-5"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="main-8-3-5" class="usa-sidenav__sublist"> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/jan-hall/context-discovery-jan-hall" data-drupal-link-system-path="">Context of a Discovery: Jan Hall</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/jan-hall/nobel-moment-jan-hall" data-drupal-link-system-path="">The Nobel Moment: Jan Hall</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/jan-hall/person-behind-nobel-prize-jan-hall" data-drupal-link-system-path="">The Person Behind the Nobel Prize: Jan Hall</a> </li> <li> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/jan-hall/prizes-legacy-jan-hall" data-drupal-link-system-path="">The Prize’s Legacy: Jan Hall</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/nist-and-nobel/other-nist-connections-nobel-prize" data-drupal-link-system-path="">Other NIST Connections to the Nobel Prize</a> </li> </ul> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20220614200424/https://www.nist.gov/education" data-drupal-link-system-path="">Resources for Kids</a> </li> </ul> </nav> </div> </div> </aside> <div class="nist-page__region nist-page__region--content tablet-lg:grid-col-8 desktop-lg:grid-col-9"> <div class="nist-block"> <h1 class="nist-page__title">Visitor Information</h1> </div> <div class="nist-block">  <div class="nist-block nist-social__wrapper"> <h2 class="nist-social__title">Share</h2> <div class="social-media-sharing"> <div class="nist-social__wrapper--share"> <div> <a target="_blank" rel="noopener" href="https://web.archive.org/web/20220614200424/https://www.facebook.com/share.php?u=https://www.nist.gov/about-nist/visit" title="Facebook" class="nist-social nist-social--facebook-gray"> <span>Facebook</span> </a> </div> <div> <a target="_blank" rel="noopener" href="https://web.archive.org/web/20220614200424/https://www.linkedin.com/shareArticle?mini=true&url=https://www.nist.gov/about-nist/visit&source=https://www.nist.gov/about-nist/visit" title="Linkedin" class="nist-social nist-social--linkedin-gray"> <span>Linkedin</span> </a> </div> <div> <a target="_blank" rel="noopener" href="https://web.archive.org/web/20220614200424/https://twitter.com/intent/tweet?url=https://www.nist.gov/about-nist/visit&status=https://www.nist.gov/about-nist/visit" title="Twitter" class="nist-social nist-social--twitter-gray"> <span>Twitter</span> </a> </div> <div> <a href="https://web.archive.org/web/20220614200424/mailto:/?subject=NIST.gov&body=Check out this site https://www.nist.gov/about-nist/visit" title="Email" class="nist-social nist-social--envelope-gray"> <span>Email</span> </a> </div> </div> </div> </div>  </div> <div class="nist-block"> <div class="text-with-summary"> <p>NIST operates in two main locations: <strong>Gaithersburg, Maryland,</strong> and <strong>Boulder, Colorado</strong>. NIST jointly operates research organizations in four additional locations explicitly established to promote cross-disciplinary collaborations that accelerate research results. See more about our other locations below.</p> <h2><a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/ofpm/visitor-information">Campus Access & Security</a></h2> <p><strong>All visitors must be preregistered </strong>and present photo identification and vehicle registration information upon arrival. NIST can only accept a state-issued driver’s license or identification card for access to federal facilities if issued by states that are REAL ID compliant or have an extension. <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/ofpm/visitor-information">Details...</a></p> <div class="nist-callout"> <p><strong>Please make sure you read the <a data-entity-substitution="canonical" data-entity-type="node" data-entity-uuid="1df7573c-c711-4acc-93a9-e51937703801" href="/web/20220614200424/https://www.nist.gov/about-nist/visit/nist-visitor-associate-and-contractor-protocols-mitigating-covid-19-exposure-nist" title="NIST Visitor, Associate and Contractor Protocols for Mitigating COVID-19 Exposure on NIST Campuses">NIST Visitor and Contractor Protocols for Mitigating COVID-19 Exposure on NIST Campuses</a> page before arriving on site.</strong></p> </div> <hr><h3>Other Locations </h3> <ul><li><a href="https://web.archive.org/web/20220614200424/http://jila.colorado.edu/">JILA</a>, in Boulder, Colorado, is a world-class physics research institute jointly operated by NIST and the University of Colorado at Boulder.</li> <li><a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/mml/hollings-marine-laboratory">Hollings Marine Laboratory</a>, in Charleston, South Carolina, a national center for coastal ocean science, in which NIST is one of five federal, state and university partners.</li> <li><a href="https://web.archive.org/web/20220614200424/http://www.ibbr.umd.edu/">The Institute for Bioscience and Biotechnology Research</a> (IBBR) (formerly CARB), in Rockville, Maryland, is an interdisciplinary partnership in cutting-edge biotechnology between NIST and the University of Maryland Biotechnology Institute.</li> <li><a href="https://web.archive.org/web/20220614200424/http://jqi.umd.edu/">The Joint Quantum Institute</a> (JQI), in College Park, Maryland, is a new institute for advancing quantum physics research that is jointly operated with the University of Maryland.</li> </ul><p>Physical security for those locations is not provided by NIST.</p> <div> <div> <div> </div> </div> </div> </div> </div> </div> </div> </div> <div class="grid-container"> <div class="nist-page__region nist-page__region--content-bottom"> <div class="nist-block"> <div class="text-italic font-sans-2xs"> Created July 29, 2016, Updated May 23, 2022 </div> </div> </div> </div> </section> <nav role="navigation" aria-labelledby="book-label-1084291" class="nist-booknav"> <ul> <li class="nist-booknav__item nist-booknav__item--next"> <a href="/web/20220614200424/https://www.nist.gov/about-nist/visit/campus-access-and-security" rel="next" title="Go to next page" class="nist-booknav__link">Campus Access and Security <b>›</b></a> </li> </ul> </nav> </div>  <footer class="nist-footer padding-bottom-4"> <div class="grid-container nist-footer__info"> <div class="grid-row"> <div class="tablet:grid-col-6"> <div class="nist-footer__logo"> <a href="/web/20220614200424/https://www.nist.gov/" title="National Institute of Standards and Technology" rel="home"> <img class="nist-footer__logo-img" src="/web/20220614200424im_/https://www.nist.gov/libraries/nist-component-library/dist/img/logo/NIST-Logo-Brand-White.svg" alt="National Institute of Standards and Technology logo"> </a> </div> <div class="nist-footer__contact"> <h3 class="nist-footer__contact-heading">HEADQUARTERS</h3> <address> 100 Bureau Drive<br> Gaithersburg, MD 20899<br> <a href="https://web.archive.org/web/20220614200424/tel:301-975-2000">301-975-2000</a> </address> <p> <a href="https://web.archive.org/web/20220614200424/mailto:do-webmaster@nist.gov">Webmaster</a> | <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/about-nist/contact-us">Contact Us</a> | <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/visit">Our Other Offices</a> </p> </div> </div> <div class="tablet:grid-col-6"> <div class="nist-footer__social-links"> <a class="nist-social nist-social--twitter-white" href="https://web.archive.org/web/20220614200424/https://twitter.com/NIST"> <span>Twitter</span> </a> <a class="nist-social nist-social--facebook-white" href="https://web.archive.org/web/20220614200424/https://www.facebook.com/NIST"> <span>Facebook</span> </a> <a class="nist-social nist-social--linkedin-white" href="https://web.archive.org/web/20220614200424/https://www.linkedin.com/company/nist"> <span>LinkedIn</span> </a> <a class="nist-social nist-social--instagram-white" href="https://web.archive.org/web/20220614200424/https://www.instagram.com/nist/"> <span>Instagram</span> </a> <a class="nist-social nist-social--youtube-white" href="https://web.archive.org/web/20220614200424/https://www.youtube.com/NIST"> <span>YouTube</span> </a> <a class="nist-social nist-social--giphy-white" href="https://web.archive.org/web/20220614200424/https://giphy.com/nist"> <span>Giphy</span> </a> <a class="nist-social nist-social--rss-white" href="https://web.archive.org/web/20220614200424/https://www.nist.gov/news-events/nist-rss-feeds"> <span>RSS Feed</span> </a> <a class="nist-social nist-social--envelope-white" href="https://web.archive.org/web/20220614200424/https://service.govdelivery.com/accounts/USNIST/subscriber/new"> <span>Mailing List</span> </a> </div> <div class="nist-footer__feedback"> How are we doing? <a class="usa-button" rel="nofollow" href="/web/20220614200424/https://www.nist.gov/form/nist-gov-feedback?destination=/about-nist/visit" title="Provide feedback">Feedback</a> </div> </div> </div> </div> <div class="grid-container"> <div class="nist-footer__nav" role="navigation"> <ul> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/privacy-policy">Site Privacy</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/oism/accessibility">Accessibility</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/privacy">Privacy Program</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/oism/copyrights">Copyrights</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.commerce.gov/vulnerability-disclosure-policy">Vulnerability Disclosure</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/no-fear-act-policy">No Fear Act Policy</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/office-director/freedom-information-act">FOIA</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/environmental-policy-statement">Environmental Policy</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/summary-report-scientific-integrity">Scientific Integrity</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.nist.gov/nist-information-quality-standards">Information Quality Standards</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://www.commerce.gov/">Commerce.gov</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/http://www.science.gov/">Science.gov</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/http://www.usa.gov/">USA.gov</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20220614200424/https://vote.gov/">Vote.gov</a> </li> </ul> </div> </div> </footer>  </div> <script type="application/json" data-drupal-selector="drupal-settings-json">{"path":{"baseUrl":"\/","scriptPath":null,"pathPrefix":"","currentPath":"node\/1084291","currentPathIsAdmin":false,"isFront":false,"currentLanguage":"en"},"pluralDelimiter":"\u0003","suppressDeprecationErrors":true,"back_to_top":{"back_to_top_button_trigger":100,"back_to_top_prevent_on_mobile":false,"back_to_top_prevent_in_admin":true,"back_to_top_button_type":"image","back_to_top_button_text":"Back to top"},"google_analytics":{"trackOutbound":true,"trackMailto":true,"trackDownload":true,"trackDownloadExtensions":"7z|aac|arc|arj|asf|asx|avi|bin|bsh|c|csv|doc(x|m)?|dot(x|m)?|dw(fx|g|gd)|dxf|eps|epub|exe|f(90)|flv|gif|gz|gzip|hqx|jar|jpe?g|js|m1v|mp(2|3|4|e?g)|mobi|mov(ie)?|msi|msp|pdf|phps|pl|png|ppt(x|m)?|pot(x|m)?|pps(x|m)?|ppam|sld(x|m)?|thmx|qtm?|ra(m|r)?|rfa|rtf|rvt|sch|sea|sit|swf|tar|tgz|tif|txt|txz|wav|wma|wmv|wpd|wrl|xls(x|m|b)?|xlt(x|m)|xlam|xml|xsd|z|zip","trackDomainMode":1},"data":{"extlink":{"extTarget":false,"extTargetNoOverride":false,"extNofollow":false,"extNoreferrer":false,"extFollowNoOverride":false,"extClass":"ext","extLabel":"(link is external)","extImgClass":false,"extSubdomains":true,"extExclude":"\\.gov\\\/|\\.mil\\\/","extInclude":"","extCssExclude":"","extCssExplicit":"","extAlert":true,"extAlertText":"Thank you for visiting NIST. We hope your visit was informative. We have provided a link to this site because it has information that may be of interest to our users. NIST does not necessarily endorse the views expressed or the facts presented on this site. Further, NIST does not endorse any commercial products that may be advertised or available on this site. Click OK to be directed to your link.","mailtoClass":"0","mailtoLabel":"(link sends email)","extUseFontAwesome":false,"extIconPlacement":"append","extFaLinkClasses":"fa fa-external-link","extFaMailtoClasses":"fa fa-envelope-o","whitelistedDomains":[]}},"user":{"uid":0,"permissionsHash":"582eea317b4636ab5a0dffc8c6a006df3d6901ea5610498a0bbefc925ea1da0f"}}</script> <script src="/web/20220614200424js_/https://www.nist.gov/sites/default/files/js/js_2umT1D0X3HbU7ismspQlJgX6qWP8x1t83thxQbND7c8.js"></script> <script type="text/javascript">window.NREUM||(NREUM={});NREUM.info={"beacon":"gov-bam.nr-data.net","licenseKey":"37b7ccb661","applicationID":"1089704227","transactionName":"YFxUN0sADEdYVkBaClkWdwBNCA1aFkVVVABoWlcAUQQ=","queueTime":0,"applicationTime":35,"atts":"TBtXQQMaH0k=","errorBeacon":"gov-bam.nr-data.net","agent":""}</script></body> </html>

CINXE.COM

Visitor Information | NIST