a:5:{s:8:"template";s:12359:"<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta content="initial-scale=1, width=device-width" name="viewport"/>
<title>{{ keyword }}</title>
<link href="https://fonts.googleapis.com/css?family=Droid+Serif:400,400italic,700,700italic&amp;subset=latin%2Clatin-ext" id="wp-garden-droid-font-css" media="all" rel="stylesheet" type="text/css"/>
<link href="https://fonts.googleapis.com/css?family=Shadows+Into+Light&amp;subset=latin%2Clatin-ext" id="wp-garden-shadows-font-css" media="all" rel="stylesheet" type="text/css"/>
<link href="http://fonts.googleapis.com/css?family=Open+Sans%3A300%2C400%2C600%2C700%2C800%2C300italic%2C400italic%2C600italic%2C700italic%2C800italic%7CRaleway%3A100%2C200%2C300%2C400%2C500%2C600%2C700%2C800%2C900&amp;ver=5.4" id="redux-google-fonts-smof_data-css" media="all" rel="stylesheet" type="text/css"/></head>
<style rel="stylesheet" type="text/css">@charset "UTF-8";.has-drop-cap:not(:focus):first-letter{float:left;font-size:8.4em;line-height:.68;font-weight:100;margin:.05em .1em 0 0;text-transform:uppercase;font-style:normal} html{font-family:sans-serif;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%}body{margin:0}article,aside,footer,header,nav{display:block}a{background-color:transparent}a:active,a:hover{outline:0}/*! Source: https://github.com/h5bp/html5-boilerplate/blob/master/src/css/main.css */@media print{*,:after,:before{color:#000!important;text-shadow:none!important;background:0 0!important;-webkit-box-shadow:none!important;box-shadow:none!important}a,a:visited{text-decoration:underline}a[href]:after{content:" (" attr(href) ")"}a[href^="#"]:after{content:""}h3{orphans:3;widows:3}h3{page-break-after:avoid}} *{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}:after,:before{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}html{font-size:10px;-webkit-tap-highlight-color:transparent}body{font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px;line-height:1.42857143;color:#333;background-color:#fff}a{color:#337ab7;text-decoration:none}a:focus,a:hover{color:#23527c;text-decoration:underline}a:focus{outline:thin dotted;outline:5px auto -webkit-focus-ring-color;outline-offset:-2px}h3{font-family:inherit;font-weight:500;line-height:1.1;color:inherit}h3{margin-top:20px;margin-bottom:10px}h3{font-size:24px}.text-left{text-align:left}ul{margin-top:0;margin-bottom:10px}.container{padding-right:15px;padding-left:15px;margin-right:auto;margin-left:auto}@media (min-width:768px){.container{width:750px}}@media (min-width:992px){.container{width:970px}}@media (min-width:1200px){.container{width:1170px}}.row{margin-right:-15px;margin-left:-15px}.col-lg-3,.col-lg-6,.col-lg-9,.col-md-3,.col-md-6,.col-md-9,.col-sm-12,.col-sm-3,.col-sm-6,.col-sm-9,.col-xs-12{position:relative;min-height:1px;padding-right:15px;padding-left:15px}.col-xs-12{float:left}.col-xs-12{width:100%}@media (min-width:768px){.col-sm-12,.col-sm-3,.col-sm-6,.col-sm-9{float:left}.col-sm-12{width:100%}.col-sm-9{width:75%}.col-sm-6{width:50%}.col-sm-3{width:25%}}@media (min-width:992px){.col-md-3,.col-md-6,.col-md-9{float:left}.col-md-9{width:75%}.col-md-6{width:50%}.col-md-3{width:25%}}@media (min-width:1200px){.col-lg-3,.col-lg-6,.col-lg-9{float:left}.col-lg-9{width:75%}.col-lg-6{width:50%}.col-lg-3{width:25%}}.collapse{display:none}.navbar-collapse{padding-right:15px;padding-left:15px;overflow-x:visible;-webkit-overflow-scrolling:touch;border-top:1px solid transparent;-webkit-box-shadow:inset 0 1px 0 rgba(255,255,255,.1);box-shadow:inset 0 1px 0 rgba(255,255,255,.1)}@media (min-width:768px){.navbar-collapse{width:auto;border-top:0;-webkit-box-shadow:none;box-shadow:none}.navbar-collapse.collapse{display:block!important;height:auto!important;padding-bottom:0;overflow:visible!important}}.clearfix:after,.clearfix:before,.container:after,.container:before,.navbar-collapse:after,.navbar-collapse:before,.row:after,.row:before{display:table;content:" "}.clearfix:after,.container:after,.navbar-collapse:after,.row:after{clear:both}@-ms-viewport{width:device-width}  body{font-family:'Open Sans';color:#767676;background-attachment:fixed;background-size:cover;background-position:center}a{color:#6f4792}a:hover{color:#6ab42f}article,aside,body,div,footer,h3,header,html,i,li,nav,span,ul{-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility}#cshero-header-navigation{position:static}h3{margin:0 0 10px;line-height:1.8}#cshero-footer-top{padding:83px 0 81px}#cshero-footer-top .cms-recent-posts article{position:relative;margin-bottom:25px}#cshero-footer-top h3.wg-title{color:#fff;font-size:21px!important;font-weight:700;margin-bottom:30px!important}#cshero-footer-bottom{border-top:1px solid #333;color:#767676;padding:29px 0 28px;font-weight:600!important}#cshero-header{width:100%;position:relative}#cshero-header nav.main-navigation ul.menu-main-menu>li>a{line-height:103px}#cshero-header-top{background-color:#6ab42f}#cshero-header{height:103px;background-color:#fff}#cshero-header #cshero-header-logo a{line-height:103px;-webkit-transition:line-height .4s ease-in-out;-khtml-transition:line-height .4s ease-in-out;-moz-transition:line-height .4s ease-in-out;-ms-transition:line-height .4s ease-in-out;-o-transition:line-height .4s ease-in-out;transition:line-height .4s ease-in-out}#cshero-header #cshero-header-logo a:focus{outline:0}#cshero-header #cshero-header-navigation{-webkit-transition:line-height .1s ease-in-out;-khtml-transition:line-height .1s ease-in-out;-moz-transition:line-height .1s ease-in-out;-ms-transition:line-height .1s ease-in-out;-o-transition:line-height .1s ease-in-out;transition:line-height .1s ease-in-out}#cshero-header #cshero-header-navigation nav#site-navigation{float:right}#cshero-header #cshero-header-navigation nav#site-navigation ul#menu-primary-menu>li>a{color:#222}#cshero-header #cshero-header-navigation nav#site-navigation ul#menu-primary-menu>li>a span{padding:7.7px 15px}#cshero-header #cshero-header-navigation nav#site-navigation ul#menu-primary-menu>li>a:hover{color:#fff}#cshero-header #cshero-header-navigation nav#site-navigation ul#menu-primary-menu>li>a:hover span{background-color:#6ab42f}#cshero-header #cshero-header-navigation nav#site-navigation ul#menu-primary-menu>li>a:focus{outline:0;text-decoration:none}#cshero-header #cshero-menu-mobile i{display:none}@media screen and (max-width:991px){#cshero-header{height:60px}#cshero-header #cshero-header-logo a{line-height:60px}#cshero-header #cshero-menu-mobile{float:right;position:absolute;right:15px;top:50%;-webkit-transform:translatey(-50%);-khtml-transform:translatey(-50%);-moz-transform:translatey(-50%);-ms-transform:translatey(-50%);-o-transform:translatey(-50%);transform:translatey(-50%)}#cshero-header #cshero-menu-mobile i{display:block!important;padding:0 0 0 30px}}@media screen and (min-width:992px){#cshero-header-navigation .main-navigation ul{margin:0;text-indent:0}#cshero-header-navigation .main-navigation li a{border-bottom:0;white-space:nowrap}#cshero-header-navigation .main-navigation .menu-main-menu>li{vertical-align:top}#cshero-header-navigation .main-navigation .menu-main-menu>li>a{position:relative;text-align:center;line-height:1.1;-webkit-transition:all .4s ease 0s;-khtml-transition:all .4s ease 0s;-moz-transition:all .4s ease 0s;-ms-transition:all .4s ease 0s;-o-transition:all .4s ease 0s;transition:all .4s ease 0s}#cshero-header-navigation .main-navigation .menu-main-menu>li:last-child>a{padding-right:0}#cshero-header-navigation .main-navigation .menu-main-menu>li,#cshero-header-navigation .main-navigation .menu-main-menu>li a{display:inline-block;text-decoration:none}}@media screen and (max-width:991px){.cshero-main-header .container{position:relative}#cshero-menu-mobile{display:block}#cshero-header-navigation{display:none}#cshero-menu-mobile{display:block}#cshero-menu-mobile i{color:inherit;cursor:pointer;font-size:inherit;line-height:35px;text-align:center}#cshero-header #cshero-header-navigation .main-navigation{padding:15px 0}#cshero-header #cshero-header-navigation .main-navigation .menu-main-menu li{line-height:31px}#cshero-header #cshero-header-navigation .main-navigation .menu-main-menu li a{background:0 0;color:#fff}#cshero-header-navigation .main-navigation .menu-main-menu>li{position:relative}#cshero-header-navigation .main-navigation .menu-main-menu>li a{display:block;border-bottom:none;font-size:14px;color:#222}}@media screen and (max-width:991px){#cshero-footer-bottom .footer-bottom-widget{text-align:center}#cshero-footer-top .widget-footer{height:270px;margin-bottom:40px}}@media screen and (max-width:767px){#cshero-footer-top .widget-footer{padding-top:40px}}.container:after,.navbar-collapse:after,.row:after{clear:both}.container:after,.container:before,.navbar-collapse:after,.navbar-collapse:before,.row:after,.row:before{content:" ";display:table}.vc_grid.vc_row .vc_pageable-slide-wrapper>:hover{z-index:3} @font-face{font-family:'Open Sans';font-style:normal;font-weight:400;src:local('Open Sans Regular'),local('OpenSans-Regular'),url(http://fonts.gstatic.com/s/opensans/v17/mem8YaGs126MiZpBA-UFVZ0e.ttf) format('truetype')} @font-face{font-family:Raleway;font-style:normal;font-weight:400;src:local('Raleway'),local('Raleway-Regular'),url(http://fonts.gstatic.com/s/raleway/v14/1Ptug8zYS_SKggPNyC0ISg.ttf) format('truetype')}@font-face{font-family:Raleway;font-style:normal;font-weight:500;src:local('Raleway Medium'),local('Raleway-Medium'),url(http://fonts.gstatic.com/s/raleway/v14/1Ptrg8zYS_SKggPNwN4rWqZPBQ.ttf) format('truetype')} @font-face{font-family:Roboto;font-style:normal;font-weight:500;src:local('Roboto Medium'),local('Roboto-Medium'),url(http://fonts.gstatic.com/s/roboto/v20/KFOlCnqEu92Fr1MmEU9fBBc9.ttf) format('truetype')} @font-face{font-family:Raleway;font-style:normal;font-weight:500;src:local('Raleway Medium'),local('Raleway-Medium'),url(http://fonts.gstatic.com/s/raleway/v14/1Ptrg8zYS_SKggPNwN4rWqZPBQ.ttf) format('truetype')}</style>
<body class="wpb-js-composer js-comp-ver-4.10 vc_responsive">
<div class="" id="page">
<header class="site-header" id="masthead">
<div id="cshero-header-top" style="display:">
<div class="container">
<div class="row">
</div>
</div>
</div>
<div class="cshero-main-header no-sticky " id="cshero-header">
<div class="container">
<div class="row">
<div class="col-xs-12 col-sm-3 col-md-3 col-lg-3" id="cshero-header-logo">
<a href="#">{{ keyword }}</a>
</div>
<div class="col-xs-12 col-sm-9 col-md-9 col-lg-9 megamenu-off" id="cshero-header-navigation">
<nav class="main-navigation" id="site-navigation">
<div class="menu-primary-menu-container"><ul class="nav-menu menu-main-menu" id="menu-primary-menu"><li class="menu-item menu-item-type-custom menu-item-object-custom menu-item-home menu-item-1276" id="menu-item-1276"><a href="#"><span>Home</span></a></li>
<li class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1437" id="menu-item-1437"><a href="#"><span>Our Services</span></a></li>
<li class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1456" id="menu-item-1456"><a href="#"><span>About us</span></a></li>
<li class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1278" id="menu-item-1278"><a href="#"><span>Blog</span></a></li>
<li class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1325" id="menu-item-1325"><a href="#"><span>Contact</span></a></li>
</ul></div> </nav>
</div>
<div class="collapse navbar-collapse" id="cshero-menu-mobile"><i class="fa fa-bars"></i></div>
</div>
</div>
</div>
 </header>
<div id="main">
{{ text }}
</div>
<footer>
<div id="cshero-footer-top">
<div class="container">
<div class="row">
<div class="col-xs-12 col-sm-6 col-md-3 col-lg-3 widget-footer"><aside class="widget cms-recent-posts" id="cms_recent_posts-4"><h3 class="wg-title">Recent Posts</h3> <article class="recent-post-item clearfix post-890 post type-post status-publish format-standard has-post-thumbnail hentry category-lawn-maintenance tag-lawn-care">
{{ links }}
</article>
</aside></div>
</div>
</div>
</div>
<div id="cshero-footer-bottom">
<div class="container">
<div class="row">
<div class="col-xs-12 col-sm-12 col-md-6 col-lg-6 footer-bottom-widget text-left">{{ keyword }} 2021</div>
</div>
</div>
</div>
</footer>
</div>
</body></html>";s:4:"text";s:13626:"In 1986, he was awarded the Nobel Prize for his invention, along with Gerd Binnig and Heinrich Rohrer who developed the scanning tunneling microscope. The electron microscope uses a beam of electrons and their wave-like characteristics to magnify an object's image, unlike the optical microscope that uses visible light to magnify images. Just as in a TEM, the top of a SEM is a powerful electron gun that shoots an electron beam … - High magnification (200,000x) - 3D images 17. Fluorescence Microscopy. Current electron microscopes have atomic level resolution, consistent with the very small wavelength of the electron. Subsequently M. von Ardenne (1938) constructed a scanning transmission electron microscope (STEM) by adding scan coils to a transmission electron microscope. It provides detailed images of the surfaces of cells and whole organisms that are not possible by TEM. Microscopes which employ visible light cannot resolve features smaller than about 500 nm. The scanning electron microscope, introduced in 1966, gains even greater resolution by reading the response of the subject material rather than the direct reflection of its beam. The two objectives and two eyepieces provide the eyes with slightly different viewing angles. A compound microscope is a laboratory instrument used to magnify the image of a small object; usually objects that cannot be seen by the naked eye. Scanning electron microscope definition is - an electron microscope in which a beam of focused electrons moves across the object with the secondary electrons produced by the object and the electrons scattered by the object being collected to form a three-dimensional image on a display screen —called also scanning microscope. Microscopes are essential tools for modern technology. A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. SEM produces images that can show information on a material’s surface composition and topography. An electron microscope is an electron-optical instrument in which a beam of electrons is used to produce an enlarged image of a minute object on a fluorescent screen or photographic plate. While X-rays are inherently dangerous to humans, you shouldn't be too worried about operating an SEM. As a result, an entire world of […] The scanning electron microscope -- also known as SEM -- was invented in 1952 by Sir Charles Oatley. Scanning Electron Microscope Max Knoll managed to obtain the first image from a Scanning Electron Microscope. Microscopes which employ visible light cannot resolve features smaller than about 500 nm. Think TEM and SEM. Described by the Nobel Society as "one of the most important inventions of the century," the electron microscope is a valuable and versatile research tool. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition of the sample. In essence, the left and right eye are seeing the same object but in … In particular, the microscope has been used widely in life sciences. The development of the scanning electron microscope (SEM) started around the same time as that of the TEM. What's the purpose of cell fractionation? The sample is dehydrated and coated with a thin layer of a conductive material, such as gold. The transmission electron microscope (TEM) was invented by Ernst Ruska of Germany in the early 1930s, and the first commercial TEM was developed by Siemens in 1939. The development of the scanning electron microscope (SEM) started around the same time as that of the TEM. Compound microscope was invented by Z. Jansen. The first magnifying lenses appeared in the 13 th century, invented to aid those with poor eyesight. What's the purpose of cell fractionation? Samples are placed in an evacuated chamber to be scanned. Compound Microscope – Types, Parts, Diagram, Functions and Uses. The resolution of such a microscope is limited by the wavelength of light. The SEM produces a … Subsequently, the scanning electron microscope (SEM), which works by scanning a focused electron beam over the surface of the specimen, was successfully commercialized in 1965. Other major types of microscopes are the electron microscope (both the transmission electron microscope and the scanning electron microscope) and the various types of scanning probe microscope. The electron microscope was invented in 1931 by two German scientists, Max Knott and Ernst Ruska. He thus invented the ‘electron scanning microscope’ which formed images based on detecting secondary electrons that are locally generated by a focused scanning electron beam. What is a Transmission Electron Microscope? The article begins with an account of prewar German work, particularly that of von Ardenne, who established the theoretical basis of a scanning electron microscope and constructed an instrument which was primarily intended to overcome chromatic aberration when relatively thick specimens were examined by transmission. Scanning Electron Microscopes (SEM) Invented in 1931 by Manfred Von Ardenne in Berlin It is a type of electron microscope that produces images of a sample by scanning it with a focused beam of electrons The picture shown by the microscope is of the surface of the object Can only view dead/ non living specimen As compared to the transmission microscope that cuts the specimen in half Fakhfakh As part of his quest to make science tools available to everyone, everywhere, Manu Prakash has invented a $1 microscope, a $5 chemistry set and a 20-cent centrifuge. The confocal microscope was invented by Marvin Minsky, who has written a nice summary about this on the web. Paiye sabhi sawalon ka Video solution sirf photo khinch kar. This is an optical instrument containing one or more lenses that produce an enlarged image of an object placed in the focal plane of the lens(es). Using a similar approach, optical scanning microscopes achieve a resolution of 400 Angstroms, less than the wavelength of … Microscopes are used to assist us analyze objects that are excessively little to be seen in a normal human oculus. 1937 Manfred von Ardenne invented the scanning electron microscope with great depth of focus and a high resolution (Raster-Elektronenmikroskop) 1938 ManfredvonArdenne constructed theﬁrst scanningelectron microscope andthe ﬁrstscanning transmission electron microscope Typically magnification of scanning electron microscope is around 20,000 times. The atomic force microscope (AFM) was developed to overcome a basic drawback with STM – it can only image conducting or semiconducting surfaces. By 1938, Ernst Ruska had produced a prototype with a magnification of 30,000. For the study of transparent and colorless organic material phase- contrast microscope was invented in 1932 by Frits Zernike. Newer Post Older Post Home. 1931. The first commercially available TEM was also developed by Ruska (1938, Siemens). A scanning electron microscope ( SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. An electron microscope is a scientific instrument which uses a beam of electrons to examine objects on a very fine scale. This was rather late, which is due to the electronics needed for scanning the electron probe across the specimen. Microscope Microscope Uses Small sample observation Notable experiments Discovery of cells Related items Optical microscope Electron microscope A microscope (from the Ancient Greek: μικρός, mikrós, "small" and σκοπεῖν, skopeîn, "to look" or "see") is a laboratory instrument used to examine objects that are too small to be seen by the naked eye. In 1981 German physicists Gerd Binnig and Heinrich Rohrer developed Ruska’s concept further by using a beam of electrons to scan the surface of a specimen rather than to penetrate it. Two types of electron microscopes? Poor light absorption results in extremely small differences in the intensity distribution in the image. An account of the early history of scanning electron microscopy has been presented by McMullan. Data Analysis4.1 Size Distributions. By 1980, first scanning probe microscopes where invented. We need microscopes to study, manufacture, and inspect all the tiny objects, including microorganisms, cells/tissues, materials, and electronics. A scanning electron microscope (SEM) is a type of microscope which uses a focused beam of electrons to scan a surface of a sample to create a high resolution image. In 1936 he was contracted by Siemens and Halske AG Prior to 1590, the smallest thing humanity could see was probably no smaller than the width of a hair. In an electron microscope, beams of fast-moving electrons are focused on a sample. Phase contrast scanning, light microscope was invented by. Share this post. A field emission gun fires electrons down a vacuum chamber and past electromagnets that focus them into a beam. The Scanning Electron Microscope is a type of Electron Microscope that images the sampled surface by scanning it with a high- energy beam of electrons in a raster scan pattern 3 Fantastic electron microscope images of objects looking very suggestively like fossilized living forms again captured the imagination of the world. Scanning electron microscope (SEM), type of electron microscope, designed for directly studying the surfaces of solid objects, that utilizes a beam of focused electrons of relatively low energy as an electron probe that is scanned in a regular manner over the specimen. Crewe used focused beams of electrons instead of light waves for magnification. Ernst Ruska’s brother, Helmut Ruska, was a doctor and biologist, and used early electron microscopes to make images of viruses and other small objects. Phase contrast scanning, light microscope was invented by. to see smaller things, a new kind of microscope would need to be invented. The Scanning electron Microscope (SEM) provides a spatial resolution 1,000 times greater than that of conventional optical microscope. The Scanning Tunneling Electron Microscope Ordinary microscopes focus light which is emitted (or reflected) from objects. by Philip K. Hopke Gary S. ,Casuccio, in Data Handling in Science and Technology, 1991. Although Max Knoll produced a photo with a 50 mm object-field-width showing channeling contrast by the use of an electron beam scanner, it was Manfred von Ardenne who in 1937 invented a microscope with high resolution by scanning a very small raster with a demagnified and finely focused electron beam. Advantage of electron microscopes. In some ways, a TEM is analogous to the operation of an optical microscope, which was the impetus for the lesson. The scanning electron microscope (SEM) uses a focused beam of high-energy electrons to generate a variety of signals at the surface of solid specimens. As one of the most advanced types of microscope by far, an electron microscope offers a lot of undeniable and important advantages that only it can deliver, and this has proven by the sheer magnitude of advancements in today’s society.. High magnification The scanning tunneling microscope or STM, was invented in 1981 by Gerd Binnig and Heinrich Rohrer of IBM's Zurich Lab in Zurich, Switzerland. A SEM microscope is a scanning electron microscope. Single-beam scanning, one of the more popular methods employed in a majority of the commercial laser scanning microscopes, uses a pair of computer-controlled galvanometer mirrors to scan the specimen in a raster pattern at a rate of approximately one frame per second. surpass the resolution . An electron microscope can be used to magnify things over 500,000 times, enough to see lots of details inside cells. The scanning electron microscope, or SEM, uses electrons rather than light for image formation. Since the introduction of electron microscopes in the 1930s, scanning electron microscopy (SEM) has developed into a critical tool within numerous different research fields, spanning everything from materials science, to forensics, to industrial manufacturing, and even to the life sciences. In subsequent refinements, Dr. Hillier helped correct the problem of astigmatism in the lenses and worked on a scanning electron microscope that produced images of … Optical Microscope Wikipedia. Abbreviation: SEM See more. As the electrons interact with the sample, they produce secondary electrons, backscattered electrons, and characteristic X-rays. Scanning electron microscopes (SEMs) Most of the funky electron microscope images you see in books—things like wasps holding microchips in their mouths—are not made by TEMs but by scanning electron microscopes (SEMs), which are designed to make images of the surfaces of tiny objects. The image returns as a pattern of transmitted electrons based on the density gradient on the specimen.The first Scanning Electron Microscope (SEM) is a … An electron microscope uses electrons to observe the structure and morphology of things at small scales (down to a fraction of a nanometer). As to who invented the compound microscope is a question of controversy. The Nobel Prize in Physics 1986 was divided, one half awarded to Ernst Ruska "for his fundamental work in electron optics, and for the design of the first electron microscope", the other half jointly to Gerd Binnig and Heinrich Rohrer "for their design of the scanning tunneling microscope". The theory of the electron microscope was based on the work of Hermann von Helmholtz and Ernst Abbe, two physicists. ";s:7:"keyword";s:45:"who invented the scanning electron microscope";s:5:"links";s:1446:"<a href="https://royalspatn.adamtech.vn/nha/uefa-champions-league-sbc-fifa-21-play-off">Uefa Champions League Sbc Fifa 21 Play Off</a>,
<a href="https://royalspatn.adamtech.vn/nha/are-flavored-rolling-papers-bad-for-you">Are Flavored Rolling Papers Bad For You</a>,
<a href="https://royalspatn.adamtech.vn/nha/bauer-media-uk-management-team">Bauer Media Uk Management Team</a>,
<a href="https://royalspatn.adamtech.vn/nha/common-turkic-alphabet">Common Turkic Alphabet</a>,
<a href="https://royalspatn.adamtech.vn/nha/nigerian-air-force-latest-acquisition">Nigerian Air Force Latest Acquisition</a>,
<a href="https://royalspatn.adamtech.vn/nha/homonym-games-for-middle-school">Homonym Games For Middle School</a>,
<a href="https://royalspatn.adamtech.vn/nha/wp_get_current_user-not-working-in-plugin">Wp_get_current_user Not Working In Plugin</a>,
<a href="https://royalspatn.adamtech.vn/nha/recommended-hospital-in-phnom-penh">Recommended Hospital In Phnom Penh</a>,
<a href="https://royalspatn.adamtech.vn/nha/st-clair-college-sportsplex">St Clair College Sportsplex</a>,
<a href="https://royalspatn.adamtech.vn/nha/assumption-vs-presumption">Assumption Vs Presumption</a>,
<a href="https://royalspatn.adamtech.vn/nha/football-manager-2021%2C-epic-games">Football Manager 2021, Epic Games</a>,
<a href="https://royalspatn.adamtech.vn/nha/best-universities-for-political-science-in-europe">Best Universities For Political Science In Europe</a>,
";s:7:"expired";i:-1;}