{"id":129,"date":"2008-05-15T03:53:51","date_gmt":"2008-05-15T03:53:51","guid":{"rendered":"http:\/\/occamstypewriter.org\/rpg\/2008\/05\/15\/kit\/"},"modified":"2008-05-15T03:53:51","modified_gmt":"2008-05-15T03:53:51","slug":"kit","status":"publish","type":"post","link":"https:\/\/occamstypewriter.org\/rpg\/2008\/05\/15\/kit\/","title":{"rendered":"Kit"},"content":{"rendered":"<p><a href=\"http:\/\/www.flickr.com\/photos\/pommiebastards\/2494001890\/sizes\/l\/\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/farm4.static.flickr.com\/3141\/2494001890_d765093a78_m.jpg\" alt=\"\" width=\"240\" height=\"170\" \/><\/a><\/p>\n<p>\nThis rather splendid piece of apparatus is sitting on a trolley just round the corner from my office.  <a href=\"http:\/\/www.mmb.usyd.edu.au\/research\/academic_profiles\/mitchell.php\">Mitch Guss<\/a> uses it to demonstrate the use of the Ewald Sphere in indexing crystals for space group determination and data collection (for a tutorial on these concepts see Bernhard Rupp&#8217;s excellent <a href=\"http:\/\/www.ruppweb.org\/xray\/101index.html\">Crystallography 101<\/a> course).<\/p>\n<p>\nThe printed web page (now there&#8217;s a slightly unphased concept) on top of the stack of overheads is from the <a href=\"http:\/\/reference.iucr.org\/dictionary\/Ewald_sphere\">Online Dictionary of Crystallography<\/a> .  In practise, we rotate the crystal using the <a href=\"http:\/\/www.1911encyclopedia.org\/Goniometer\">goniometer<\/a> (and see the annotation at <a href=\"http:\/\/www.flickr.com\/photos\/pommiebastards\/2494001890\/\">Flickr<\/a> ) and collect two diffraction patterns 90 degrees apart (about the axis of the incident beam) to index it.  The whole thing rotates and twists quite pleasingly.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This rather splendid piece of apparatus is sitting on a trolley just round the corner from my office. Mitch Guss uses it to demonstrate the use of the Ewald Sphere in indexing crystals for space group determination and data collection &hellip; <a href=\"https:\/\/occamstypewriter.org\/rpg\/2008\/05\/15\/kit\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-129","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/occamstypewriter.org\/rpg\/wp-json\/wp\/v2\/posts\/129","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/occamstypewriter.org\/rpg\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/occamstypewriter.org\/rpg\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/occamstypewriter.org\/rpg\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/occamstypewriter.org\/rpg\/wp-json\/wp\/v2\/comments?post=129"}],"version-history":[{"count":0,"href":"https:\/\/occamstypewriter.org\/rpg\/wp-json\/wp\/v2\/posts\/129\/revisions"}],"wp:attachment":[{"href":"https:\/\/occamstypewriter.org\/rpg\/wp-json\/wp\/v2\/media?parent=129"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/occamstypewriter.org\/rpg\/wp-json\/wp\/v2\/categories?post=129"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/occamstypewriter.org\/rpg\/wp-json\/wp\/v2\/tags?post=129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}