{"id":13580,"date":"2025-02-16T10:00:00","date_gmt":"2025-02-16T10:00:00","guid":{"rendered":"https:\/\/modernsciences.org\/staging\/4414\/?p=13580"},"modified":"2025-02-04T05:37:19","modified_gmt":"2025-02-04T05:37:19","slug":"metal-expands-when-heated-railroads-february-2025","status":"publish","type":"post","link":"https:\/\/modernsciences.org\/staging\/4414\/metal-expands-when-heated-railroads-february-2025\/","title":{"rendered":"Metal expands when heated. What does that mean for railroads?"},"content":{"rendered":"\n<figure class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Why Don\u2019t Railroads Need Expansion Joints?\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/Rdj5-6t6QI8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Hans Goldschmidt discovered that metal oxides, such as rust, react with aluminum powder to produce pure liquid metal, a process now widely used in thermite welding.<\/p>\n","protected":false},"excerpt":{"rendered":"Hans Goldschmidt discovered that metal oxides, such as rust, react with aluminum powder to produce pure liquid metal,&hellip;\n","protected":false},"author":4,"featured_media":13582,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"video","meta":{"nf_dc_page":"","fifu_image_url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/2\/23\/Thermite_welding_08.jpg","fifu_image_alt":"","footnotes":""},"categories":[15,17],"tags":[4639,4638,4628,4634,4642,4631,4633,4644,4643,4632,4636,4641,4630,4637,4645,4646,4640,4627,216,4635,4629,4647,189],"class_list":["post-13580","post","type-post","status-publish","format-video","has-post-thumbnail","category-engineering","category-math-and-the-sciences","tag-aluminum-powder-reaction","tag-controlled-cooling-in-welding","tag-exothermic-welding","tag-global-railway-infrastructure","tag-hans-goldschmidt","tag-high-temperature-welding","tag-metal-expansion","tag-molten-metal-welding","tag-preheating-process","tag-rail-expansion","tag-rail-safety-improvements","tag-railroad-construction","tag-railway-maintenance","tag-seamless-rail-connections","tag-steel-rail-welding","tag-thermal-expansion-effects","tag-thermite-welding","tag-track-stability","tag-veritasium-2","tag-vibration-control","tag-wear-reduction","tag-welding-engineering","tag-youtube","post_format-post-format-video","cs-entry","cs-video-wrap"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hans Goldschmidt discovered that metal oxides, such as rust, react with aluminum powder to produce pure liquid metal, a process now widely used in thermite welding.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Modern Sciences Team\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/modernsciences.org\/staging\/4414\/metal-expands-when-heated-railroads-february-2025\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.9\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Modern Sciences - A media company that aims to provide the academics, researchers, and science enthusiasts with the latest news and stories in the world of Applied and Pure Science.\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Metal expands when heated. 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