{"id":1420,"date":"2024-02-18T12:30:20","date_gmt":"2024-02-18T07:00:20","guid":{"rendered":"https:\/\/lotusarise.com\/qna\/?p=1420"},"modified":"2024-04-03T07:11:31","modified_gmt":"2024-04-03T01:41:31","slug":"q-what-is-the-purpose-of-evolved-laser-interferometer-space-antenna-elisa-project","status":"publish","type":"post","link":"https:\/\/lotusarise.com\/qna\/upsc\/q-what-is-the-purpose-of-evolved-laser-interferometer-space-antenna-elisa-project","title":{"rendered":"Q.\u00a0What is the purpose of \u2018evolved Laser Interferometer Space Antenna\u2019 (eLISA) project?"},"content":{"rendered":"\n<ul class=\"mcq wp-block-list\">\n<li>To detect neutrinos<\/li>\n\n\n\n<li>To detect gravitational waves<\/li>\n\n\n\n<li>To detect the effectiveness of missile defence system<\/li>\n\n\n\n<li>To study the effect of solar flares on our communication systems<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Answer: (b) To detect gravitational waves<\/strong><\/p>\n<\/blockquote>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"evolved-laser-interferometer-space-antenna-elisa\">evolved Laser Interferometer Space Antenna (eLISA)<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The evolved Laser Interfermoter Space Antenna (eLISA) is a mission aiming at&nbsp;<strong>exploring the Gravitational Universe from space&nbsp;<\/strong>for the first time.<\/li>\n\n\n\n<li>It involves scientists from&nbsp;<strong>eight European countries<\/strong>&nbsp;\u2012 Denmark, France, Germany, Italy, The Netherlands, Spain, Switzerland, and the UK \u2012&nbsp;<strong>as well as the support of several US-based ones.&nbsp;<\/strong><\/li>\n\n\n\n<li>The eLISA mission consists of a \u201cMother\u201d and two \u201cDaughter\u201d spacecrafts. These will orbit the Sun in a&nbsp;<strong>triangular configuration<\/strong>. The&nbsp;<strong>three satellites will form a precision interferometer, with the two Daughter spacecrafts connected to the Mother one by 1 million km long laser beams<\/strong>. This interferometer will be capable of detecting gravitational waves at frequencies in the range of 0.1 mHz to 1 Hz.<\/li>\n\n\n\n<li>Such a frequency interval is not accessible on Earth due to arm length limitations and to noise caused by the terrestrial gravity gradient noise: in this sense, eLISA will complement the efforts of ground-based gravitational-wave detectors.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Answer: (b) To detect gravitational waves evolved Laser Interferometer Space Antenna (eLISA)<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1,3],"tags":[44],"years":[56],"class_list":["post-1420","post","type-post","status-publish","format-standard","hentry","category-upsc","category-prelims","tag-science-and-tech","years-56"],"acf":[],"taxonomy_info":{"category":[{"value":1,"label":"UPSC"},{"value":3,"label":"Prelims"}],"post_tag":[{"value":44,"label":"Science and Tech"}],"years":[{"value":56,"label":"2017"}]},"featured_image_src_large":false,"author_info":{"display_name":"LotusArise","author_link":"https:\/\/lotusarise.com\/qna\/author\/team-lotusarise"},"comment_info":0,"category_info":[{"term_id":1,"name":"UPSC","slug":"upsc","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":1269,"filter":"raw","cat_ID":1,"category_count":1269,"category_description":"","cat_name":"UPSC","category_nicename":"upsc","category_parent":0},{"term_id":3,"name":"Prelims","slug":"prelims","term_group":0,"term_taxonomy_id":3,"taxonomy":"category","description":"","parent":1,"count":1251,"filter":"raw","cat_ID":3,"category_count":1251,"category_description":"","cat_name":"Prelims","category_nicename":"prelims","category_parent":1}],"tag_info":[{"term_id":44,"name":"Science and Tech","slug":"science-and-tech","term_group":0,"term_taxonomy_id":44,"taxonomy":"post_tag","description":"","parent":0,"count":167,"filter":"raw"}],"_links":{"self":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1420","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/comments?post=1420"}],"version-history":[{"count":0,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1420\/revisions"}],"wp:attachment":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/media?parent=1420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/categories?post=1420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/tags?post=1420"},{"taxonomy":"years","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/years?post=1420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}