{"id":20800,"date":"2024-02-23T01:15:14","date_gmt":"2024-02-22T19:45:14","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=20800"},"modified":"2025-04-06T07:46:37","modified_gmt":"2025-04-06T02:16:37","slug":"aegis","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/aegis\/","title":{"rendered":"Anti-hydrogen Experiment: Gravity, Interferometry, Spectroscopy (AEgIS)"},"content":{"rendered":"<h2>About Anti-hydrogen Experiment: Gravity, Interferometry, Spectroscopy (AEgIS)<\/h2>\n<ul>\n<li>It is an\u00a0experiment approved by CERN (European Organization for Nuclear Research) with the\u00a0goal of studying antihydrogen physics.<\/li>\n<li>The\u00a0primary goal of AEgIS is the\u00a0direct measurement of the Earth&#8217;s gravitational acceleration, g,\u00a0on antihydrogen.\n<ul>\n<li>Once performed this\u00a0could be the first direct test of the gravitational interaction between matter and antimatter.\u00a0<\/li>\n<\/ul>\n<\/li>\n<li>AEgIS is a\u00a0collaboration of physicists from a number of\u00a0countries in Europe and from India.<\/li>\n<\/ul>\n<h2>What is Antimatter?<\/h2>\n<ul>\n<li>Antimatter is the same as ordinary matter except that it has the\u00a0opposite electric charge.<\/li>\n<li>It is also known as\u00a0\u201cmirror\u201d matter.<\/li>\n<li>For instance, an electron, which has a negative charge, has an antimatter partner known as a positron. A positron is a particle with the same mass as an electron but a positive charge.\u00a0<\/li>\n<li>The\u00a0antimatter particles corresponding to electrons, protons, and neutrons are\u00a0called positrons, antiprotons, and antineutrons; collectively they are\u00a0referred to as antiparticles.<\/li>\n<li>These anti-particles\u00a0can combine to form anti-atoms and, in principle, could\u00a0even form anti-matter regions\u00a0of our universe.<\/li>\n<li>Matter and antimatter cannot coexist at close range for more than a small fraction of a second\u00a0because they collide with and annihilate each other, releasing large quantities of energy in the form of gamma rays or elementary particles.<\/li>\n<li>Antimatter was\u00a0created along with matter after the Big Bang.<\/li>\n<li>Humans have created antimatter particles using ultra-high-speed collisions\u00a0at huge particle accelerators such as the Large Hadron Collider, which is located outside Geneva and\u00a0operated by CERN (the European Organization for Nuclear Research).<\/li>\n<li>There are\u00a0also naturally produced antiparticles made sporadically throughout the universe.<\/li>\n<\/ul>\n<h2>Key Facts about Positronium<\/h2>\n<ul>\n<li>The matter, which forms the world around us, consists of atoms, the simplest of which is hydrogen, which is the most plentiful element in the Universe. This is made up of a positively-charged proton and a negatively-charged electron.<\/li>\n<li>Positronium, on the other hand, is a\u00a0short-lived hydrogen-like atom, which consists of an\u00a0electron and its antimatter equivalent, a positron (rather than an electron and a proton).<\/li>\n<li>Due to its\u00a0very short life, it annihilates with a half-life of 142 nano-seconds.<\/li>\n<li>This hydrogen-like system is a great\u00a0contender for attempting laser cooling and thereby\u00a0performing tests of fundamental theories in physics.<\/li>\n<li>Positronium can generate huge amounts of energy. It can shed light on &#8216;antimatter&#8217; which existed at the beginning of the Universe.<\/li>\n<\/ul>\n<hr \/>\n<h3>Q1) What is Spectroscopy?<\/h3>\n<p>Spectroscopy is the study of the absorption and emission of light and other radiation by matter. It involves the splitting of light (or more precisely electromagnetic radiation) into its constituent wavelengths (a spectrum), which is done in much the same way as a prism splits light into a rainbow of colours.\u00a0<\/p>\n<p><strong>Source:<\/strong> <a href=\"https:\/\/indianexpress.com\/article\/technology\/science\/in-a-first-cern-scientists-carry-out-laser-cooling-of-positronium-9176208\/\" target=\"_blank\" rel=\"nofollow noopener\"><u>In a first, CERN scientists carry out laser cooling of Positronium<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Anti-hydrogen Experiment: Gravity, Interferometry, Spectroscopy is an experiment approved by CERN (European Organization for Nuclear Research) with the goal of studying antihydrogen physics.<\/p>\n","protected":false},"author":5,"featured_media":20801,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-20800","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/20800","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=20800"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/20800\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/20801"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=20800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=20800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=20800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}