{"id":30788,"date":"2023-08-22T03:32:53","date_gmt":"2023-08-21T22:02:53","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=30788"},"modified":"2025-04-15T23:54:51","modified_gmt":"2025-04-15T18:24:51","slug":"what-is-a-demon-particle","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/what-is-a-demon-particle\/","title":{"rendered":"What is a Demon Particle?"},"content":{"rendered":"<h2><strong>About Demon Particle<\/strong><\/h2>\n<p>&nbsp;<\/p>\n<ul>\n<li>The demon particle was first <strong>predicted by theoretical physicist David Pines in 1956<\/strong>.<\/li>\n<li>Pines <strong>theorized that electrons passing through a solid would exhibit unique behaviors<\/strong>, and that these behaviors could <strong>lead to the formation of a new type of particle<\/strong> that he <strong>called a &#8220;demon particle.&#8221;<\/strong><\/li>\n<li>They are <strong>massless, chargeless, and transparent to light<\/strong>.<\/li>\n<li>They are also <strong>able to form plasmons<\/strong>, which are <strong>collective units of electrons that behave like waves.<\/strong><\/li>\n<li>Plasmons are <strong>important in superconductivity<\/strong>, and the discovery of demon particles <strong>could lead to the development of new superconducting materials<\/strong> <strong>that operate at room temperature.<\/strong><\/li>\n<\/ul>\n<h3>\u00a0<\/h3>\n<h3>What is Superconductivity?<\/h3>\n<ul>\n<li>It is a <strong>phenomenon whereby a charge moves through a material without resistance<\/strong>.<\/li>\n<li>In theory, this <strong>allows electrical energy to be transferred<\/strong> between two points <strong>with perfect efficiency, losing nothing to heat.<\/strong><\/li>\n<li>It was <strong>first discovered in 1911 by Dutch physicist Heike Kamerlingh Onnes<\/strong> when he observed the sudden drop in electrical resistance of mercury at extremely low temperatures.<\/li>\n<li>Superconductivity is <strong>generally observed at very low temperatures<\/strong>, often close to absolute zero (0 Kelvin or -273.15\u00b0C).<\/li>\n<li><strong>Meissner-Ochsenfeld Effect:<\/strong>\n<ul>\n<li><strong>Superconductors expel magnetic fields from their interior<\/strong> when they enter the superconducting state.<\/li>\n<li>This effect, known as the Meissner-Ochsenfeld effect, <strong>causes the superconductor to repel magnetic fields, leading to the phenomenon of magnetic levitation.<\/strong><\/li>\n<li><strong>When a magnet is brought near<\/strong> a superconductor in its superconducting state, it <strong>will float above the superconductor due to this repulsion.<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<hr \/>\n<h3>Q1)What is an Electron?<\/h3>\n<p>An electron is a subatomic particle that carries a negative electric charge. It is one of the fundamental particles that make up atoms, along with protons and neutrons. Electrons carry a fundamental electric charge, denoted as &#8220;e,&#8221; which is approximately equal to -1.602 x 10^-19 coulombs (C).Electrons have a very small mass compared to protons and neutrons. The mass of an electron is approximately 9.109 x 10^-31 kilograms (kg), making it about 1\/1836 times the mass of a proton.<\/p>\n<p><strong>Source:<\/strong>\u00a0<a href=\"https:\/\/www.business-standard.com\/world-news\/researchers-unveil-demon-particle-that-can-lead-to-making-superconductors-123081600853_1.html\" target=\"_blank\" rel=\"nofollow noopener\"><u>Researchers unveil &#8216;demon particle&#8217; that can lead to making superconductors<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The demon particle was first predicted by theoretical physicist David Pines in 1956.<\/p>\n","protected":false},"author":5,"featured_media":30789,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-30788","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\/30788","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=30788"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/30788\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/30789"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=30788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=30788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=30788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}