Jutros snijeg pada skoro svuda u Crnoj Gori i prilika je da podsjetimo na neke zanimljivosti kada je o ovom agregatnom stanju vode rije\u010d.<\/p>\n
Snijeg je oblik vode u \u010dvrstom stanju \u010dija se kristalizacija odvija u atmosferi, pa iako je njegova hemijska formula H20, ista kao kod vode ili leda, prili\u010dno se razlikuje od susne\u017eice i ledene ki\u0161e.<\/p>\n
Dva snije\u017ena kristala nikad nisu identi\u010dna (barem teorijski) \u2013 postoji toliko mogu\u0107ih kombinacija da je prakti\u010dki nemogu\u0107e da se dva kristala stvore potpuno jednako. Najbli\u017ee “isti” kristali su se uspjeli uhvatiti u laboratoriji 1988. godine \u2013 bili su gotovo identi\u010dni, ali ne ba\u0161 100%.<\/p>\n
Najve\u0107a snije\u017ena pahulja ikad zabilje\u017eena bila je u Fort Keogh, Montana, 1887. \u2013 promjer 38 cm, debljina oko 20 cm. Bilo je mirno vrijeme i pahulja je pala ravno, bez lomljenja.<\/p>\n
Snijeg mo\u017ee biti crven, \u017eut, zelen, pa \u010dak i crn.\u00a0 Crveni snijeg \u2013 “lubanji snijeg” (zbog algi Chlamydomonas nivalis); \u017duti\/zeleni \u2013 razne vrste algi i pelud; Crni snijeg \u2013 vulkanski pepeo (\u010desto se vi\u0111a na Islandu ili u blizini Etne).<\/p>\n
Jedna pahulja mo\u017ee imati oko 100\u2013200 slojeva leda. Svaki sloj je nastao dok je kristal prolazio kroz razli\u010dite slojeve temperature i vlage u oblaku.<\/p>\n
Na Antarktiku i u Jakutsku snijeg mo\u017ee padati na temperaturama ispod \u201360\/-70 \u00b0C. Tada kristali budu jako mali i gotovo pra\u0161kasti (tzv. “diamantna pra\u0161ina”).<\/p>\n","protected":false},"excerpt":{"rendered":"
Najve\u0107a snije\u017ena pahulja ikad zabilje\u017eena imala je promjer 38 cm, a debljinu oko 20 cm<\/p>\n","protected":false},"author":1,"featured_media":398757,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-448103","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-svastara"],"_links":{"self":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/448103","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/comments?post=448103"}],"version-history":[{"count":3,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/448103\/revisions"}],"predecessor-version":[{"id":448108,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/448103\/revisions\/448108"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/media\/398757"}],"wp:attachment":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/media?parent=448103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/categories?post=448103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/tags?post=448103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}