What is PhET? A short introduction to the PhET simulations

<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:og="http://opengraphprotocol.org/schema/" xmlns:fb="http://www.facebook.com/2008/fbml" xmlns:esi="http://java.sun.com/JSP/Page" xml:lang="mr" lang="mr"> <head>   <script> window.dataLayer = window.dataLayer || []; function gtag() { window.dataLayer.push(arguments); } gtag( 'consent', 'default', { ad_storage: 'denied', analytics_storage: 'granted', } ); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-WLNGBXD'); </script>   <meta http-equiv="Content-type" content="text/html;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=edge"/> <meta name="viewport" content="width=device-width,initial-scale=1.0"> <title>What is PhET? A short introduction to the PhET simulations</title> <link rel="stylesheet" href="/css/font-awesome/css/font-awesome.min-4.7.css"> <link rel="stylesheet" type="text/css" href="https://phet.colorado.edu/css/phet-v102-min.css"/>   <script src="https://apis.google.com/js/platform.js" async defer></script> <link rel="preconnect" href="https://fonts.googleapis.com"> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> <link href="https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap" rel="stylesheet"> <script type="text/javascript"> function initBreakpoint() { var body = document.querySelector( 'body' ); var menuParents = document.querySelectorAll( '#page-nav-menu ul[role=menubar] .nav-menu-parent-text' ); if ( body && menuParents ) { clearInterval( isLargeViewInterval ); window.phet = window.phet || {}; window.phet.cssBreakpoint = 40 + // page header container padding 220 + // phet and cu logos 75 + // search and user menus ( body.className.indexOf( 'rtl' ) >= 0 ? 30 : 0 ) + // RTL languages need to break 30 pixels earlier somehow Array.prototype.slice.call( menuParents ) .map( function( item ) { return item.offsetWidth - parseInt( window.getComputedStyle( item ).paddingRight ) - parseInt( window.getComputedStyle( item ).paddingLeft ) + 22; // 22 is horizontal padding + horizontal margin on nav-menu-parent-text in wide view } ) .reduce( function( accumulator, currentItem ) { return accumulator + currentItem; }, 0 ); // dropdown menu width, flexible due to translations const mediaString = '(min-width: ' + window.phet.cssBreakpoint + 'px)'; window.phet.isLargeView = function() { return window.matchMedia( mediaString ).matches; }; document.body.className = document.body.className.replace( 'pre-load', window.phet.isLargeView() ? 'wide' : 'narrow' ); document.getElementById( 'page-header-container-wrapper' ).className = window.phet.isLargeView() ? 'expanded' : 'collapsed'; } } var isLargeViewInterval = setInterval( initBreakpoint, 50 ); </script> <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script> <link type="text/css" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1/themes/redmond/jquery-ui.css" rel="stylesheet"/> <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1/jquery-ui.min.js"></script> <script type="text/javascript">window.phet = window.phet || {};window.phet.phetLocale = "mr";var phetSimulationString = "{0} (simulation)";</script> <meta property="og:site_name" content="PhET"/><meta property="twitter:site" content="@PhETsims"/><meta property="og:title" content="PhET Interactive Simulations"/><meta property="twitter:title" content="PhET Interactive Simulations"/><meta property="og:url" content="https://phet.colorado.edu/mr/about"/><meta property="twitter:card" content="summary"/><meta property="og:image" content="https://phet.colorado.edu/images/phet-social-media-logo.png"/><meta property="twitter:image" content="https://phet.colorado.edu/images/phet-social-media-logo.png"/><meta property="og:description" content="Founded in 2002 by Nobel Laureate Carl Wieman, the PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations. PhET sims are based on extensive education <a {{0}}>research</a> and engage students through an intuitive, game-like environment where students learn through exploration and discovery."/><meta property="twitter:description" content="Founded in 2002 by Nobel Laureate Carl Wieman, the PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations. PhET sims are based on extensive education <a {{0}}>research</a> and engage students through an intuitive, game-like environment where students learn through exploration and discovery."/> </head> <body dir="ltr" class="ltr pre-load">   <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-WLNGBXD" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>   <div id="skipNav"> <a href="#page-content" accesskey="0" id="skipper" tabindex="1"> Skip to Main Content </a> </div> <div id="page-header" class="ltr"> <div id="page-header-container-wrapper"> <header id="page-header-container" role="banner"> <div id="page-header-left"> <a href="/mr/" class="phet-logo-link"> <div class="phet-logo"> <img src="/images/phet-logo-trademarked.png" alt="PhET Home Page" title="Go to the PhET home page" /> </div> </a> <div class="cu-logo"> <a href="http://www.colorado.edu" target="_blank"> <div class="cu-logo-image-clip"> <img src="/images/logos/cu_logo.png" alt="University of Colorado"/> </div> </a> </div> </div> <a id="collapsible-menu-toggle" role="button" aria-haspopup="menu" aria-expanded="false" aria-label="Toggle Primary Menu"> <div id="toggle-container"> <span id="nw-rotate" class="rotate"> <span id="nw-translate" class="line"></span> </span> <span id="ne-rotate" class="rotate"> <span id="ne-translate" class="line"></span> </span> <span id="sw-rotate" class="rotate"> <span id="sw-translate" class="line"></span> </span> <span id="se-rotate" class="rotate"> <span id="se-translate" class="line"></span> </span> <span id="east-center-line" class="line center-line"></span> <span id="west-center-line" class="line center-line"></span> </div> </a> <div id="page-header-menus" class="ltr"> <div id="collapsible-menu"> <div id="search-container-mobile" role="search"></div> <nav id="page-nav-menu" role="navigation"> <span class="screenReaderOnlyInvoked"> Website Navigation </span> <ul role="menubar"> <li class="nav-menu-item"> <a class="nav-menu-parent has-menu nav0" role="menuitem" id="nav.simulations" aria-haspopup="menu" aria-expanded="false"> <span class="nav-menu-parent-text">सादृशीकरणे</span> </a> <div class="nav-menu-children" aria-hidden="true"> <ul role="menu" aria-labelledby="nav.simulations"> <li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-allSimulations" href="/mr/simulations/filter?type=html"> <span class="nav-menu-child-text">All Sims</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-physics" href="/mr/simulations/filter?subjects=physics&type=html"> <span class="nav-menu-child-text">भौतिकशास्त्र</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-math-and-statistics" href="/mr/simulations/filter?subjects=math-and-statistics&type=html"> <span class="nav-menu-child-text">गणित</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-chemistry" href="/mr/simulations/filter?subjects=chemistry&type=html"> <span class="nav-menu-child-text">रसायनशास्त्र</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-earth-and-space" href="/mr/simulations/filter?subjects=earth-and-space&type=html"> <span class="nav-menu-child-text">भू विज्ञान</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-biology" href="/mr/simulations/filter?subjects=biology&type=html"> <span class="nav-menu-child-text">जीवशास्त्र</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-simulations-translated" href="/mr/simulations/translated"> <span class="nav-menu-child-text">भाषांतरीत सादृशे</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-simulations-studio" href="/mr/simulations/customize"> <span class="nav-menu-child-text">Customizable Sims</span></a></li> </ul> </div> </li><li class="nav-menu-item"> <a class="nav-menu-parent has-menu nav0" role="menuitem" id="nav.studio" aria-haspopup="menu" aria-expanded="false"> <span class="nav-menu-parent-text nav-menu-sparkle">Studio</span> <span class="nav-menu-sparkle-accessible-name"> Studio toolkit </span> </a> <div class="nav-menu-children" aria-hidden="true"> <ul role="menu" aria-labelledby="nav.studio"> <li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-studio-overview" href="/mr/studio/overview"> <span class="nav-menu-child-text">About Studio</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-simulations-studio" href="/mr/simulations/customize"> <span class="nav-menu-child-text">Customizable Sims</span></a></li> </ul> </div> </li><li class="nav-menu-item"> <a class="nav-menu-parent has-menu nav0" role="menuitem" id="nav.teaching" aria-haspopup="menu" aria-expanded="false"> <span class="nav-menu-parent-text">Teaching</span> </a> <div class="nav-menu-children" aria-hidden="true"> <ul role="menu" aria-labelledby="nav.teaching"> <li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-teacherIdeas-browse" href="/mr/activities"> <span class="nav-menu-child-text">उपक्रम चाळा</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-teacherIdeas-submit" href="/mr/activities/contribute"> <span class="nav-menu-child-text">Contribute an Activity</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-activities-contributionGuidelines" href="/mr/activities/contribution-guidelines"> <span class="nav-menu-child-text">Activity Contribution Guidelines</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-virtualWorkshops" href="/mr/teaching-resources/virtual-workshop/"> <span class="nav-menu-child-text">Virtual Workshops</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-forTeachers-tipsForUsingPhet" href="/mr/teaching-resources/tipsForUsingPhet"> <span class="nav-menu-child-text">Tips for Using PhET</span></a></li> </ul> </div> </li><li class="nav-menu-item"> <a class="nav-menu-parent nav0" role="menuitem" href="/mr/research"> <span class="nav-menu-parent-text">संशोधन</span> </a> <div class="nav-menu-children empty" aria-hidden="true"> </div> </li><li class="nav-menu-item"> <a class="nav-menu-parent has-menu nav0" role="menuitem" id="nav.initiatives" aria-haspopup="menu" aria-expanded="false"> <span class="nav-menu-parent-text">Initiatives</span> </a> <div class="nav-menu-children" aria-hidden="true"> <ul role="menu" aria-labelledby="nav.initiatives"> <li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-inclusiveDesign" href="/mr/inclusive-design"> <span class="nav-menu-child-text">Inclusive Design</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-phetGlobal" href="/mr/phet-global"> <span class="nav-menu-child-text">PhET Global</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-deibInStemEd" href="/mr/deib-in-stem-ed"> <span class="nav-menu-child-text">DEIB in STEM Ed</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-sceneryStackOse" href="/mr/scenerystack-ose"> <span class="nav-menu-child-text">SceneryStack OSE</span></a></li><li class="nav-menu-children-item"> <a class="nav-menu-child" role="menuitem" tabindex="-1" id="nav-location-nav-phetImpact" href="/publications/PhET_Impact_Report_2024.pdf"> <span class="nav-menu-child-text">Impact Report</span></a></li> </ul> </div> </li> </ul> </nav> <div id="search" role="search"> <div class="search-toggle-container"> <button id="search-toggle-button" aria-haspopup="menu" aria-expanded="false" aria-label="Search"> <svg id="search-icon" style="display: block;" viewBox="-1 -1 100 100" xmlns="http://www.w3.org/2000/svg"> <circle id="search-circle" class="search-shape" cx="30" cy="30" r="29"></circle> <line id="search-line" class="search-shape" x1="75" y1="75" x2="50" y2="50"></line> </svg> <svg id="x-icon" style="display: none;" viewBox="-1 -1 100 100" xmlns="http://www.w3.org/2000/svg"> <line class="search-shape" x1="75" y1="75" x2="25" y2="25"></line> <line class="search-shape" x1="75" y1="25" x2="25" y2="75"></line> </svg> </button> </div> <div id="search-container-desktop" class="search-hidden" aria-hidden="true"></div> </div> <div id="user-menu" class="ltr"> <div> <div id="loginout-list-parent"> <div id="sign-in-placeholder"> <div class="login-toggle"> <button role="button" class="login-button loading"> <svg class="user-icon loading" version="1.1" id="Layer_1" x="0px" y="0px" width="81px" height="81px" viewBox="0 0 81 81" enable-background="new 0 0 81 81" xml:space="preserve" xmlns="http://www.w3.org/2000/svg" > <g> <path d="M53.551,66H28.449c-5.418,0-9.057-3.548-9.057-8.827c0-11.339,4.127-17.841,11.325-17.841c0.673,0,1.248,0.382,2.203,1.017 c1.672,1.112,4.471,2.971,8.079,2.971s6.407-1.858,8.08-2.971c0.955-0.635,1.529-1.017,2.202-1.017 c7.198,0,11.325,6.502,11.325,17.841C62.607,62.452,58.968,66,53.551,66z M30.528,42.112c-7.268,0.157-8.358,9.483-8.358,15.061 c0,3.786,2.347,6.05,6.279,6.05h25.102c3.932,0,6.279-2.264,6.279-6.05c0-5.577-1.091-14.903-8.357-15.061 c-0.214,0.108-0.497,0.312-0.854,0.548c-1.809,1.201-5.171,3.437-9.618,3.437s-7.81-2.235-9.617-3.437 C31.024,42.424,30.741,42.221,30.528,42.112z M41,40.838c-6.847,0-12.417-5.572-12.417-12.419S34.153,16,41,16 s12.417,5.572,12.417,12.419S47.847,40.838,41,40.838z M41,18.777c-5.315,0-9.64,4.324-9.64,9.642c0,5.316,4.324,9.64,9.64,9.64 s9.64-4.323,9.64-9.64C50.64,23.102,46.315,18.777,41,18.777z"/> </g> </svg> </button> </div> <li id="signed-out-placeholder" class="login-link nav-menu-item"> <button class="nav-menu-parent"> Sign in / Register </button> </li> </div> <div id="sign-in-button" style="display: none"> <div class="login-toggle"> <button id="login-button" class="login-button" role="button" aria-haspopup="dialog" aria-label="Sign In" title="Sign In"> <svg class="user-icon" version="1.1" id="Layer_1" x="0px" y="0px" width="81px" height="81px" viewBox="0 0 81 81" enable-background="new 0 0 81 81" xml:space="preserve" xmlns="http://www.w3.org/2000/svg"> <g> <path d="M53.551,66H28.449c-5.418,0-9.057-3.548-9.057-8.827c0-11.339,4.127-17.841,11.325-17.841c0.673,0,1.248,0.382,2.203,1.017 c1.672,1.112,4.471,2.971,8.079,2.971s6.407-1.858,8.08-2.971c0.955-0.635,1.529-1.017,2.202-1.017 c7.198,0,11.325,6.502,11.325,17.841C62.607,62.452,58.968,66,53.551,66z M30.528,42.112c-7.268,0.157-8.358,9.483-8.358,15.061 c0,3.786,2.347,6.05,6.279,6.05h25.102c3.932,0,6.279-2.264,6.279-6.05c0-5.577-1.091-14.903-8.357-15.061 c-0.214,0.108-0.497,0.312-0.854,0.548c-1.809,1.201-5.171,3.437-9.618,3.437s-7.81-2.235-9.617-3.437 C31.024,42.424,30.741,42.221,30.528,42.112z M41,40.838c-6.847,0-12.417-5.572-12.417-12.419S34.153,16,41,16 s12.417,5.572,12.417,12.419S47.847,40.838,41,40.838z M41,18.777c-5.315,0-9.64,4.324-9.64,9.642c0,5.316,4.324,9.64,9.64,9.64 s9.64-4.323,9.64-9.64C50.64,23.102,46.315,18.777,41,18.777z"/> </g> </svg> </button> </div> <li id="signed-out-menuitem" class="login-link nav-menu-item"> <button class="nav-menu-parent" id="mobile-login-button"> Sign in / Register </button> </li> </div> <div id="signed-in-menu" style="display: none"> <ul id="signed-in-menubar" role="menubar"> <li id="signed-in-menu-item" class="nav-menu-item"> <button class="nav-menu-parent has-menu" role="menuitem" aria-expanded="false" aria-haspopup="menu"> <span id="user-menu-label" class="account-text nav-menu-parent-text"> My Account </span> <svg class='user-icon active' version='1.1' id='Layer_1' x='0px' y='0px' width='81px' height='81px' viewBox='0 0 81 81' enable-background='new 0 0 81 81' xml:space='preserve' xmlns='http://www.w3.org/2000/svg' aria-labelledby='user-menu-label'> <title> My Account </title> <g> <path d="M53.551,66H28.449c-5.418,0-9.057-3.548-9.057-8.827c0-11.339,4.127-17.841,11.325-17.841c0.673,0,1.248,0.382,2.203,1.017 c1.672,1.112,4.471,2.971,8.079,2.971s6.407-1.858,8.08-2.971c0.955-0.635,1.529-1.017,2.202-1.017 c7.198,0,11.325,6.502,11.325,17.841C62.607,62.452,58.968,66,53.551,66z M30.528,42.112c-7.268,0.157-8.358,9.483-8.358,15.061 c0,3.786,2.347,6.05,6.279,6.05h25.102c3.932,0,6.279-2.264,6.279-6.05c0-5.577-1.091-14.903-8.357-15.061 c-0.214,0.108-0.497,0.312-0.854,0.548c-1.809,1.201-5.171,3.437-9.618,3.437s-7.81-2.235-9.617-3.437 C31.024,42.424,30.741,42.221,30.528,42.112z M41,40.838c-6.847,0-12.417-5.572-12.417-12.419S34.153,16,41,16 s12.417,5.572,12.417,12.419S47.847,40.838,41,40.838z M41,18.777c-5.315,0-9.64,4.324-9.64,9.642c0,5.316,4.324,9.64,9.64,9.64 s9.64-4.323,9.64-9.64C50.64,23.102,46.315,18.777,41,18.777z"/> </g> </svg> </button> <div class="nav-menu-children" id="loginout-list"> <ul role="menu" aria-labelledby="user-menu-label"> <li id="my-bookmarks-link" class="nav-menu-children-item" style="display: none"> <a role="menuitem" tabindex="-1" class="nav-menu-child sign-in-links" href="/mr/my-phet/my-bookmarks"> <span class="nav-menu-child-text"> My Bookmarks </span> </a> </li> <li id="my-contributions-link" class="nav-menu-children-item" style="display: none"> <a role="menuitem" tabindex="-1" class="nav-menu-child sign-in-links" href="/mr/my-phet/my-contributions"> <span class="nav-menu-child-text"> My Contributions </span> </a> </li> <li id="my-presets-link" class="nav-menu-children-item" style="display: none"> <a role="menuitem" tabindex="-1" class="nav-menu-child sign-in-links" href="/mr/my-phet/my-presets"> <span class="nav-menu-child-text"> My Presets </span> </a> </li> <div class="nav-menu-separator">  </div> <li id="admin-link" class="nav-menu-children-item" style="display: none"> <a role="menuitem" tabindex="-1" class="nav-menu-child sign-in-links" href="/admin/main"> <span class="nav-menu-child-text">Administration</span> </a> </li> <li id="activity-editor-link" class="nav-menu-children-item" style="display: none"> <a role="menuitem" tabindex="-1" class="nav-menu-child sign-in-links" href="/mr/activities/manage"> <span class="nav-menu-child-text">Activity Review</span> </a> </li> <li class="nav-menu-children-item"> <a role="menuitem" tabindex="-1" class="nav-menu-child sign-in-links" id="edit-profile-link" href="/mr/edit-profile?dest=%2Fmr%2Fabout"> <span class="nav-menu-child-text"> Edit profile </span> </a> </li> <div class="nav-menu-separator">  </div> <li class="nav-menu-children-item"> <button role="menuitem" tabindex="-1" class="nav-menu-child sign-in-links" onclick="window.logout()"> <span class="nav-menu-child-text">Sign out</span> </button> </li> </ul> </div> </li> </ul> </div> <div id="profileUpdateAsk" style="display: none;" class="profile-update-ask"> <div class="profile-update-img"> <img src="/images/Update_profile_popup.png" alt=""/> <div class="profile-update-title"> Time to update! </div> </div> <div class="profile-update-right"> <div class="profile-update-text"> We are working to improve the usability of our website. To support this effort, please update your profile! </div> <div class="profile-update-buttons"> <div id="profile-update-skip" class="phet-button"> Skip for now </div> <a class="profile-update-link phet-button" href="/mr/edit-profile?dest=%2Fmr%2Fabout"> Update Profile </a> </div> </div> </div> </div> </div> <div style="display:none;"> <!DOCTYPE html> <html> <head> <link rel="stylesheet" href="/_m/css/font-awesome/css/font-awesome.min-4.7.css"/> <link rel="preconnect" href="https://fonts.googleapis.com"> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> <link href="https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap" rel="stylesheet"> <title data-rh="true"></title><meta data-rh="true" name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"/><link data-rh="true" rel="shortcut icon" href="/favicon.ico"/><link data-rh="true" rel="stylesheet" type="text/css" href="/assets/css/phet-app55.css"/> </head> <body><script type="text/javascript"> history.scrollRestoration = 'manual'; </script> <div id="app" class="react-app"><dialog aria-label="Sign In" class="phet-modal-dialog"></dialog><div class="hidden"></div></div> <script type="text/javascript">__meteor_runtime_config__ = JSON.parse(decodeURIComponent("%7B%22meteorRelease%22%3A%22METEOR%403.1%22%2C%22gitCommitHash%22%3A%22e15f04f45572a638d1441db51750eb42cfe2ab2c%22%2C%22meteorEnv%22%3A%7B%22NODE_ENV%22%3A%22production%22%2C%22TEST_METADATA%22%3A%22%7B%7D%22%7D%2C%22PUBLIC_SETTINGS%22%3A%7B%22meteorOrigin%22%3A%22https%3A%2F%2Fphet.colorado.edu%22%2C%22commonInfoCookie%22%3A%22phet-common-info%22%2C%22backendMode%22%3A%22PRIMARY%22%2C%22directOrigin%22%3A%22https%3A%2F%2Fphet-direct.colorado.edu%22%2C%22CLEVER_ID%22%3A%22de6371c62cab4cc1ae29%22%2C%22shouldShowDemoPages%22%3Afalse%7D%2C%22debug%22%3Afalse%2C%22ROOT_URL%22%3A%22https%3A%2F%2Fphet.colorado.edu%2F_m%22%2C%22ROOT_URL_PATH_PREFIX%22%3A%22%2F_m%22%2C%22reactFastRefreshEnabled%22%3Atrue%2C%22autoupdate%22%3A%7B%22versions%22%3A%7B%22web.browser%22%3A%7B%22version%22%3A%22868e2ed49c701fadf9606d5b6773ebd29c64b55b%22%2C%22versionRefreshable%22%3A%22d8572a3ed225b9a773092f01fa9f7af3b28ee7f2%22%2C%22versionNonRefreshable%22%3A%22868e2ed49c701fadf9606d5b6773ebd29c64b55b%22%2C%22versionReplaceable%22%3A%22d8572a3ed225b9a773092f01fa9f7af3b28ee7f2%22%7D%7D%2C%22autoupdateVersion%22%3Anull%2C%22autoupdateVersionRefreshable%22%3Anull%2C%22autoupdateVersionCordova%22%3Anull%2C%22appId%22%3A%221g31nnl1vm0td1ez71tp%22%7D%2C%22appId%22%3A%221g31nnl1vm0td1ez71tp%22%2C%22isModern%22%3Atrue%7D"))</script> <script type="text/javascript" src="/_m/54df762c0b0a240456ed89df3dc605b4b299a208.js?meteor_js_resource=true"></script> </body> </html> </div> </div> </div> </div> </header> </div> </div>  <div style="display: none;"> <div id="page-nav-search" role="search" class="page-header-search"> <form method="get" id="search-form" class="autocompleteOff" action="/mr/search"> <div id="search-form-container"> <label for="search-text-id" class="hidden"> Search the PhET Website </label> <div class="search-box"> <input type="text" size="15" name="q" class="always-enabled acInput" id="search-text-id" tabindex="-1" placeholder="Search..."/> <button type="submit" form="search-form" id="search-submit" class="always-enabled autocompleteOff" tabindex="-1" title="Click here to search the PhET website"> <img id="magnifying-glass" src="/images/icons/search-icon.png" alt="Search"/> </button> </div> </div> </form> </div> </div> <div id="page-content" role="main" class="page-content"> <div> <div class="about-phet standard-content" dir="ltr"> <h1>PhET बद्द्ल</h1> <table width="880" border="0"> <tr> <td width="621px" valign="top" style="padding-right: 20px"><p>PhET provides fun, free, interactive, research-based science and mathematics simulations. We extensively test and evaluate each simulation to ensure educational effectiveness. These tests include student interviews and observation of simulation use in classrooms. The simulations are written in HTML5 (with some legacy simulations in Java or Flash), and can be run online or downloaded to your computer. All simulations are open source (see our <a href="/mr/about/source-code">source code</a>). Multiple <a href="/mr/about/sponsors">sponsors</a> support the PhET project, enabling these resources to be free to all students and teachers.</p> <h3> What is PhET? A short introduction to the PhET simulations </h3> <p><iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/OjZ6qvi21Qo" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe><br/> <br/></p> <h2> Videos About PhET </h2> <ul>  <li><a class="text-link" href="http://www.youtube.com/watch/OjZ6qvi21Qo" title="What is PhET"> What is PhET </a></li>  <li><a class="text-link" href="http://www.youtube.com/watch/eBGYTPJOiNU" title="Next Generation PhET sims"> Next Generation PhET sims </a></li>  <li><a class="text-link" href="http://www.youtube.com/watch/qdeHagIeyrc" title="Research and Development"> Research & Development </a></li>  <li><a class="text-link" href="http://www.youtube.com/watch/N17IM7LspU8" title="Carl Wieman: Why I Donated to PhET"> Carl Wieman: Why I Donated to PhET </a></li>  <li><a class="text-link" href="http://www.youtube.com/watch/vjFQj7xgB34" title="The Founding of PhET"> The Founding of PhET </a></li>  <li><a class="text-link" href="http://www.youtube.com/watch/3CYLQHM49Jw" title="PhET Wins 2011 Tech Award"> PhET Wins 2011 Tech Award </a></li> </ul> <h2> Awards </h2> <p> PhET has been the recipient of numerous awards: </p> <ul> <li><a class="text-link" href="https://www.oeconsortium.org/projects/open-education-awards-for-excellence/2019-winners-of-oe-awards/tools-and-practices-awards/">Open Education Award for Excellence: Open Simulation </a> (2019)</li> <li><a class="text-link" href="http://www.w4a.info/2018/submissions/tpg-web-accessibility-challenge/">TPG Web Accessibility Challenge, Delegates Award</a> (2018)</li> <li><a class="text-link" href="https://www.aps.org/programs/honors/prizes/education.cfm">APS Excellence in Physics Education Award</a> (2018)</li> <li><a class="text-link" href="https://www.wise-qatar.org/wise-awards-2017">WISE Awards</a> (2017)</li> <li><a class="text-link" href="https://www.iste.org/lead/awards/award-detail?AwardTypeID=9" target="_blank">SIGOL Online Learning Award, 2nd place</a> (April 2012). </li> <li><a class="text-link" href="http://thetechawards.thetech.org/" target="_blank">Tech Award and Microsoft Education Award</a> (October 2011). <a class="text-link" href="/mr/media/tech-award-2011" target="_blank">Read more about the Tech Award</a>. </li> <li><a class="text-link" href="http://www.sciencemag.org/site/feature/misc/webfeat/vis2007/" target="_blank">NSF & Science Magazine's International Science & Engineering Visual Challenge award</a> (2007). </li> <li><a class="text-link" href="http://grapevine.merlot.org/archives/2006_summer.html#awardsprogram" target="_blank">MERLOT Classics Award in Physics</a> (2006). </li> <li><a class="text-link" href="http://grapevine.merlot.org/archives/2006_summer.html#awardsprogram" target="_blank">MERLOT Editor's Choice Award</a> (2006) <a class="text-link" href="http://physics.merlot.org/ShowcasePhet.html" target="_blank">(PhET on MERLOT)</a>. </li> </ul> <h2> More About PhET's Design </h2> <p> To help students engage in science and mathematics through inquiry, PhET simulations are developed using the following design principles: </p> <ul> <li> Encourage scientific inquiry </li> <li> Provide interactivity </li> <li> Make the invisible visible </li> <li> Show visual mental models </li> <li> Include multiple representations (e.g., object motion, graphs, numbers, etc.) </li> <li> Use real-world connections </li> <li> Give users implicit guidance (e.g., by limiting controls) in productive exploration </li> <li> Create a simulation that can be flexibly used in many educational situations </li> </ul> <p> Several tools in the simulations provide an interactive experience: </p> <ul> <li> <strong>Click and drag </strong>to interact with simulation features </li> <li> <strong>Use sliders</strong> to increase and decrease parameters </li> <li> Choose between options with <strong>radio buttons </strong> </li> <li> Make measurements in your experiments with <strong>various instruments – </strong>rulers, stop-watches, voltmeters, and thermometers. </li> </ul> <p>As users interact with these tools, they get immediate feedback about the effect of the changes they made. This allows them to investigate cause-and-effect relationships and answer scientific questions through exploration of the simulation. For more information, visit our <a href="/mr/research">research page</a>.<br /></p> </td> <td width="331px" valign="top"> <div style="height: 510px; padding-left: 5px; padding-right: 20px; background-color: #F0F0F0; margin-left: 30px; border-radius: 15px;"> <table border="0" cellspacing="0" cellpadding="5"> <tr> <td style="height:35px" colspan="3" align="center" valign="top"> <h2> Videos About PhET </h2> </td> </tr> <tr> <td style="height:65px" valign="top"> </td>  <td style="height:65px" valign="top"><a class="" href="http://www.youtube.com/watch/OjZ6qvi21Qo" title="What is PhET"><img src="../../images/WhatisPhET.jpg" alt="" width="100" height="55"/></a></td>  <td style="height:65px" valign="top"><a class="text-link " href="http://www.youtube.com/watch/OjZ6qvi21Qo" title="What is PhET"><strong> What is PhET </strong></a></td> </tr> <tr> <td style="height:65px" valign="top"> </td>  <td style="height:65px" valign="top"><a class="" href="http://www.youtube.com/watch/eBGYTPJOiNU" title="Next Generation PhET Sims"><img src="../../images/next.jpg" alt="" width="100" height="56"/></a></td>  <td style="height:65px" valign="top"><a class="text-link " href="http://www.youtube.com/watch/eBGYTPJOiNU" title="Next Generation PhET Sims"><strong> Next Generation PhET sims </strong></a></td> </tr> <tr> <td style="height:65px" valign="top"> </td>  <td style="height:65px" valign="top"><a class="" href="http://www.youtube.com/watch/qdeHagIeyrc" title="Research and Development"><img src="../../images/research.jpg" alt="" width="100" height="55"/></a></td>  <td style="height:65px" valign="top"><strong><a class="text-link " href="http://www.youtube.com/watch/qdeHagIeyrc" title="Research and Development"> Research & Development <br/> </a></strong></td> </tr> <tr> <td style="height:65px" valign="top"> </td>  <td style="height:65px" valign="top"><a class="" href="http://www.youtube.com/watch/N17IM7LspU8" title="Carl Wieman: Why I Donated to PhET"><img src="../../images/donated.jpg" alt="" width="100" height="54"/></a></td>  <td style="height:65px" valign="top"><a class="text-link " href="http://www.youtube.com/watch/N17IM7LspU8" title="Carl Wieman: Why I Donated to PhET"><strong> Carl Wieman: Why I Donated to PhET <br/> </strong></a></td> </tr> <tr> <td style="height:65px" valign="top"> </td>  <td style="height:65px" valign="top"><a class="" href="http://www.youtube.com/watch/vjFQj7xgB34" title="The Founding of PhET"><img src="../../images/founding.jpg" alt="" width="100" height="55"/></a></td>  <td style="height:65px" valign="top"><a class="text-link " href="http://www.youtube.com/watch/vjFQj7xgB34" title="The Founding of PhET"><strong> The Founding of PhET <br/> </strong></a></td> </tr> <tr> <td style="height:65px" valign="top"> </td>  <td style="height:65px" valign="top"><a class="" href="http://www.youtube.com/watch/3CYLQHM49Jw" title="Phet Wins Award Video"><img src="../../images/awards.jpg" alt="" width="100" height="55"/></a></td>  <td style="height:65px" valign="top"><a class="text-link " href="http://www.youtube.com/watch/3CYLQHM49Jw" title="Phet Wins Award Video"><strong> PhET Wins 2011 Tech Award <br/> </strong></a></td> </tr> </table> </div> </td> </tr> </table> </div>  <iframe id="frame" height="1px" style="visibility: hidden; margin:0; padding:0;"></iframe> </div> </div> <div id="page-footer" class="ltr"> <footer> <div class="main-footer"> <div class="social-footer"> <hr> <div id="social-footer" dir="ltr"> <span> <a class="footer-link" href="https://www.facebook.com/pages/PhET-Interactive-Simulations/161503243888932?v=wall" rel="external nofollow" title="Like us on Facebook" aria-label="Like us on Facebook" dir="ltr"> <i class="fa fa-facebook"></i> </a> </span><span> <a class="footer-link" href="https://twitter.com/PhETSims" rel="external nofollow" title="Follow us on Twitter" aria-label="Follow us on Twitter" dir="ltr"> <i class="fa fa-twitter"></i> </a> </span><span> <a class="footer-link" href="https://www.linkedin.com/company/phet-interactive-simulations" rel="external nofollow" title="LinkedIn" aria-label="LinkedIn" dir="ltr"> <i class="fa fa-linkedin"></i> </a> </span><span> <a class="footer-link" href="https://www.instagram.com/phetsims/" rel="external nofollow" title="Follow us on Instagram" aria-label="Follow us on Instagram" dir="ltr"> <i class="fa fa-instagram"></i> </a> </span><span> <a class="footer-link" href="https://www.youtube.com/channel/UCMRZ0-ci4ifGBF1bJvrcDRQ" rel="external nofollow" title="Watch us on Youtube" aria-label="Watch us on Youtube" dir="ltr"> <i class="fa fa-youtube-play"></i> </a> </span> </div> <hr> </div> <div id="footer-nav-links"> <div> <a class="floating-link" href="/mr/about"><span>PhET बद्द्ल</span></a> <a class="floating-link" href="/mr/about/team"><span>Our Team</span></a> <a class="floating-link" href="/mr/our-supporters"><span>Our Supporters</span></a> <a class="floating-link" href="/mr/partnerships"><span>Partnerships</span></a> </div> <div> <a class="floating-link" href="/mr/simulations/filter?type=html&a11yFeatures=accessibility"><span>Accessibility</span></a> <a class="floating-link" href="/mr/offline-access"><span>Offline Access</span></a> <a class="floating-link" href="/mr/help-center/getting-started"><span>Help Center</span></a> <a class="floating-link" href="/mr/privacy-policy"><span>Privacy Policy</span></a> </div> <div> <a class="floating-link" href="/mr/about/source-code"><span>मूल संहिता (सोर्स कोड)</span></a> <a class="floating-link" href="/mr/licensing"><span>परवाना</span></a> <a class="floating-link" href="/mr/for-translators"><span>अनुवादकांकरीता</span></a> <a class="floating-link" href="/mr/about/contact"><span>संपर्क</span></a> </div> </div> <div class="other-languages"> <div class="translation-links"> <span class="globe"><i class="fa fa-globe"></i></span> <select id="translation-links" name="body:footer:translation-links:translation-links" aria-label="Choose Language"> <option value="en">English</option> <option value="ar_SA">العربية</option> <option value="az">Azərbaycanca</option> <option value="eu">Euskara</option> <option value="be">Беларуская</option> <option value="bs">Bosanski</option> <option value="zh_CN">简体中文</option> <option value="zh_TW">正體中文</option> <option value="hr">Hrvatski</option> <option value="cs">Česky</option> <option value="da">Dansk</option> <option value="nl">Nederlands</option> <option value="et">Eesti</option> <option value="fi">Suomi</option> <option value="fr">Français</option> <option value="gl">Galego</option> <option value="ka">ქართული</option> <option value="de">Deutsch</option> <option value="el">Ελληνικά</option> <option value="gu">અંગ્રેજી</option> <option value="hu">Magyar</option> <option value="in">Bahasa Indonesia</option> <option value="it">Italiano</option> <option value="ja">日本語</option> <option value="ko">한국어</option> <option value="ku">كوردي</option> <option value="ku_TR">Kurdî</option> <option value="lt">Lietuvių</option> <option value="mk">Македонски</option> <option selected="selected" value="mr">मराठी</option> <option value="mn">Монгол</option> <option value="nb">Norsk bokmål</option> <option value="nn">Norsk nynorsk</option> <option value="fa">فارسی</option> <option value="pl">Polski</option> <option value="pt">Português</option> <option value="pt_BR">Português do Brasil</option> <option value="ro">Română</option> <option value="sr">Српски</option> <option value="si">සිංහල</option> <option value="sk">Slovensky</option> <option value="es">Español</option> <option value="es_PE">Español Latinoamérica</option> <option value="th">ไทย</option> <option value="tr">Türkçe</option> <option value="uk">Українська</option> <option value="uz">Oʻzbekcha</option> <option value="vi">Tiếng Việt</option> </select> <span style="display: none;"> <a href="/en/about"><span>English</span></a> </span><span style="display: none;"> <a href="/ar_SA/about"><span>العربية</span></a> </span><span style="display: none;"> <a href="/az/about"><span>Azərbaycanca</span></a> </span><span style="display: none;"> <a href="/eu/about"><span>Euskara</span></a> </span><span style="display: none;"> <a href="/be/about"><span>Беларуская</span></a> </span><span style="display: none;"> <a href="/bs/about"><span>Bosanski</span></a> </span><span style="display: none;"> <a href="/zh_CN/about"><span>简体中文</span></a> </span><span style="display: none;"> <a href="/zh_TW/about"><span>正體中文</span></a> </span><span style="display: none;"> <a href="/hr/about"><span>Hrvatski</span></a> </span><span style="display: none;"> <a href="/cs/about"><span>Česky</span></a> </span><span style="display: none;"> <a href="/da/about"><span>Dansk</span></a> </span><span style="display: none;"> <a href="/nl/about"><span>Nederlands</span></a> </span><span style="display: none;"> <a href="/et/about"><span>Eesti</span></a> </span><span style="display: none;"> <a href="/fi/about"><span>Suomi</span></a> </span><span style="display: none;"> <a href="/fr/about"><span>Français</span></a> </span><span style="display: none;"> <a href="/gl/about"><span>Galego</span></a> </span><span style="display: none;"> <a href="/ka/about"><span>ქართული</span></a> </span><span style="display: none;"> <a href="/de/about"><span>Deutsch</span></a> </span><span style="display: none;"> <a href="/el/about"><span>Ελληνικά</span></a> </span><span style="display: none;"> <a href="/gu/about"><span>અંગ્રેજી</span></a> </span><span style="display: none;"> <a href="/hu/about"><span>Magyar</span></a> </span><span style="display: none;"> <a href="/in/about"><span>Bahasa Indonesia</span></a> </span><span style="display: none;"> <a href="/it/about"><span>Italiano</span></a> </span><span style="display: none;"> <a href="/ja/about"><span>日本語</span></a> </span><span style="display: none;"> <a href="/ko/about"><span>한국어</span></a> </span><span style="display: none;"> <a href="/ku/about"><span>كوردي</span></a> </span><span style="display: none;"> <a href="/ku_TR/about"><span>Kurdî</span></a> </span><span style="display: none;"> <a href="/lt/about"><span>Lietuvių</span></a> </span><span style="display: none;"> <a href="/mk/about"><span>Македонски</span></a> </span><span style="display: none;"> <a href="/mr/about"><span class="current-locale">मराठी</span></a> </span><span style="display: none;"> <a href="/mn/about"><span>Монгол</span></a> </span><span style="display: none;"> <a href="/nb/about"><span>Norsk bokmål</span></a> </span><span style="display: none;"> <a href="/nn/about"><span>Norsk nynorsk</span></a> </span><span style="display: none;"> <a href="/fa/about"><span>فارسی</span></a> </span><span style="display: none;"> <a href="/pl/about"><span>Polski</span></a> </span><span style="display: none;"> <a href="/pt/about"><span>Português</span></a> </span><span style="display: none;"> <a href="/pt_BR/about"><span>Português do Brasil</span></a> </span><span style="display: none;"> <a href="/ro/about"><span>Română</span></a> </span><span style="display: none;"> <a href="/sr/about"><span>Српски</span></a> </span><span style="display: none;"> <a href="/si/about"><span>සිංහල</span></a> </span><span style="display: none;"> <a href="/sk/about"><span>Slovensky</span></a> </span><span style="display: none;"> <a href="/es/about"><span>Español</span></a> </span><span style="display: none;"> <a href="/es_PE/about"><span>Español Latinoamérica</span></a> </span><span style="display: none;"> <a href="/th/about"><span>ไทย</span></a> </span><span style="display: none;"> <a href="/tr/about"><span>Türkçe</span></a> </span><span style="display: none;"> <a href="/uk/about"><span>Українська</span></a> </span><span style="display: none;"> <a href="/uz/about"><span>Oʻzbekcha</span></a> </span><span style="display: none;"> <a href="/vi/about"><span>Tiếng Việt</span></a> </span> <div style="display: none" id="locale" locale="mr"></div> </div> <div class="translation-credits">योगेश अ. नगरदेवळेकर,बदलापूर<br/><a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="d3bdaabcb4bae1e3e3e793b4beb2babffdb0bcbe">[email protected]</a></div> </div> <div id="app-badges"> <span> <a href="https://apps.apple.com/us/app/phet-simulations/id1134126831" style="text-decoration: none; display: inline-block;"> <img style="width: 120px;" alt="Download on the App Store" src="/images/ios-app-store-badges/US/badge.svg"/> </a> </span> </div> <div class="apps-for-schools"> <a class="link-button" href="/mr/apps-for-schools"> <img src="/images/devices.svg" alt=""/> <p>Get Apps for Schools</p> </a> </div> </div> <div class="footer-highlight-background"> <div class="footer-bottom"> <div class="left"> <table> <tr> <td class="sponsor"> <a href="http://www.moore.org/" rel="external" dir="ltr"> <img src="/images/support/Moore_Foundation_logo_footer-01.png" alt="Moore Foundation" width="100"/> </a> </td> <td class="sponsor"> <a href="http://www.nsf.gov/" rel="external" dir="ltr"> <img src="/images/support/NSF_logo_footer-01.png" alt="National Science Foundation" width="56"/> </a> </td> <td class="sponsor"> <a href="http://www.hewlett.org/" rel="external" dir="ltr"> <img src="/images/support/hewlett-greyscale.svg" alt="Hewlett Foundation" width="100"/> </a> </td> <td class="sponsor"> <a href="https://yidanprize.org/" rel="external" dir="ltr"> <img src="/images/support/yidan-footer.png" alt="Yidan Prize" width="54"/> </a> </td> <td class="sponsor"> <a href="https://mastercardfdn.org/" rel="external" dir="ltr"> <img src="/images/support/mastercard-footer.svg" alt="Mastercard Foundation" width="54"/> </a> </td> </tr> </table> </div> <div class="right"> <div id="PhET-logo"> <a href="/mr/"> <img src="/images/phet-logo-trademarked-black.png" alt="PhET Home Page" title="Go to the PhET home page" style="border: none;" width="90" id="phet-logo-main-image"> </a> </div> <div class="copyright"> <a href="/mr/licensing"> <span>©<span>2025 University of Colorado. </span></span> <br/> काही हक्क राखीव. </a> </div> </div> </div> </div> </footer> </div>  <div id="ie11Blocker"> <div class="modal"> <p> The PhET website does not support your browser. We recommend using the latest version of Chrome, Firefox, Safari, or Edge. </p> <button id="ie11Blocker-close"> <i class="fa fa-times"></i> </button> </div> <script data-cfasync="false" src="/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js"></script><script> document.getElementById( 'ie11Blocker' ).addEventListener( 'click', function() { document.getElementById( 'ie11Blocker' ).style.display = 'none'; } ); </script> </div> <script type="text/javascript" src="/js/jquery-3.3.1.min.js"></script> <script type="text/javascript" src="https://phet.colorado.edu/js/phet-v62-min.js" async="true"></script> </body> </html>

CINXE.COM

What is PhET? A short introduction to the PhET simulations