{"id":2394,"date":"2017-03-29T10:24:24","date_gmt":"2017-03-29T09:24:24","guid":{"rendered":"http:\/\/www.lookingatnothing.com\/?p=2394"},"modified":"2017-03-29T11:56:25","modified_gmt":"2017-03-29T10:56:25","slug":"got-to-france-tested-coherence-effects","status":"publish","type":"post","link":"https:\/\/lookingatnothing.com\/index.php\/archives\/2394","title":{"rendered":"Got to France, tested coherence effects."},"content":{"rendered":"<p>Last week, I&#8217;ve had the pleasure of visiting France for three days, seeing Olivier Tach\u00e9 and friends at CEA, Javier P\u00e9r\u00e9z and co. at Soleil and Marianne Imp\u00e9ror and her group at l&#8217;Universit\u00e9 Paris Sud. Here&#8217;s what we did&#8230; <!--more--><\/p>\n<p>First, let&#8217;s start off with some pictures to give you an idea of the sights:<\/p>\n<div id='gallery-1' class='gallery galleryid-2394 gallery-columns-3 gallery-size-thumbnail'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5245'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5245-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"On the way.\" aria-describedby=\"gallery-1-2395\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2395'>\n\t\t\t\tOn the way. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5247'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5247-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Samples to measure, including the new NIST glassy carbon\" aria-describedby=\"gallery-1-2396\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2396'>\n\t\t\t\tSamples to measure, including the new NIST glassy carbon\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5248'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5248-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Olivier in the new X-ray lab\" aria-describedby=\"gallery-1-2397\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2397'>\n\t\t\t\tOlivier in the new X-ray lab\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5249'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5249-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"The brand new LLB SAXS machine, conveniently parked at CEA\" aria-describedby=\"gallery-1-2398\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2398'>\n\t\t\t\tThe brand new LLB SAXS machine, conveniently parked at CEA\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5250'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5250-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Traffic jams in the morning and afternoon to everyone going to the CEA and Soleil Campii (Campuses?)\" aria-describedby=\"gallery-1-2399\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2399'>\n\t\t\t\tTraffic jams in the morning and afternoon to everyone going to the CEA and Soleil Campii (Campuses?)\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5251'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5251-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Morning commuters from Massy.\" aria-describedby=\"gallery-1-2400\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2400'>\n\t\t\t\tMorning commuters from Massy. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5255'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5255-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"An evening in Paris.\" aria-describedby=\"gallery-1-2401\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2401'>\n\t\t\t\tAn evening in Paris. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5256'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5256-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"An evening in Paris.\" aria-describedby=\"gallery-1-2402\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2402'>\n\t\t\t\tAn evening in Paris. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5261'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5261-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"An evening in Paris.\" aria-describedby=\"gallery-1-2403\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2403'>\n\t\t\t\tAn evening in Paris. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5268'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5268-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"An evening in Paris.\" aria-describedby=\"gallery-1-2404\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2404'>\n\t\t\t\tAn evening in Paris. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5269'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5269-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"An evening in Paris.\" aria-describedby=\"gallery-1-2405\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2405'>\n\t\t\t\tAn evening in Paris. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5270'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5270-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"An evening in Paris.\" aria-describedby=\"gallery-1-2406\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2406'>\n\t\t\t\tAn evening in Paris. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5272'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5272-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Nuclear-powered cars at CEA.\" aria-describedby=\"gallery-1-2407\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2407'>\n\t\t\t\tNuclear-powered cars at CEA. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5286'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5286-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Universite Paris Sud&#039;s cool live Fourier transform demonostrator rig.\" aria-describedby=\"gallery-1-2409\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2409'>\n\t\t\t\tUniversite Paris Sud&#8217;s cool live Fourier transform demonostrator rig. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5289'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5289-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"CEA campus, all &quot;special design&quot;, historical buildings.\" aria-describedby=\"gallery-1-2410\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2410'>\n\t\t\t\tCEA campus, all &#8220;special design&#8221;, historical buildings. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5292'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5292-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Javier P\u00e9r\u00e9z at the end of his (beam)line.\" aria-describedby=\"gallery-1-2412\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2412'>\n\t\t\t\tJavier P\u00e9r\u00e9z at the end of his (beam)line. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5293'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5293-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"SAXS and SANS rigs start resembling each other more and more.\" aria-describedby=\"gallery-1-2413\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2413'>\n\t\t\t\tSAXS and SANS rigs start resembling each other more and more. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5295'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5295-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Sample end of Javier&#039;s beamline, full of robots and chromatographs.\" aria-describedby=\"gallery-1-2414\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2414'>\n\t\t\t\tSample end of Javier&#8217;s beamline, full of robots and chromatographs.\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5297'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5297-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Javier&#039;s bought the entire catalog of chromatography equipment for you to play with.\" aria-describedby=\"gallery-1-2415\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2415'>\n\t\t\t\tJavier&#8217;s bought the entire catalog of chromatography equipment for you to play with. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5300'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5300-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Second SAXS under construction at CEA\" aria-describedby=\"gallery-1-2417\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2417'>\n\t\t\t\tSecond SAXS under construction at CEA\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/lookingatnothing.com\/index.php\/archives\/2394\/img_5301'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/IMG_5301-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Bonse Hart USAXS under (re-)construction at CEA.\" aria-describedby=\"gallery-1-2418\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2418'>\n\t\t\t\tBonse Hart USAXS under (re-)construction at CEA. \n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>\n\n<p>At the CEA, we played around with their new Xeuss instrument. My main interest was finding out if the collimation settings might affect the coherence, and therefore the scattering pattern (following <a href=\"http:\/\/www.lookingatnothing.com\/index.php\/archives\/1652\">this story<\/a>). I had brought two samples, disc-shaped cellulose pellets, one pure cellulose, and the second cellulose plus a porous carbon sample from <a href=\"https:\/\/schneppgroup.wordpress.com\">Zo\u00eb<\/a>.<\/p>\n<figure id=\"attachment_2419\" aria-describedby=\"caption-attachment-2419\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_doubleLog.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2419\" src=\"http:\/\/www.lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_doubleLog-300x225.png\" alt=\"A comparison of the signals of two samples, using two different collimation settings on a lab SAXS instrument. \" width=\"300\" height=\"225\" srcset=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_doubleLog-300x225.png 300w, https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_doubleLog-326x245.png 326w, https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_doubleLog-80x60.png 80w, https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_doubleLog.png 576w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-2419\" class=\"wp-caption-text\">Figure 1: A comparison of the signals of two samples, using two different collimation settings on a lab SAXS instrument.<\/figcaption><\/figure>\n<p>We corrected the data for the, darkcurrent, transmission, flux and background using Olivier&#8217;s <a href=\"https:\/\/github.com\/oliviertache\/pySAXS\">PySAXS<\/a> procedures. At the moment, this only does linear binning, but that&#8217;s good enough for what we are trying to do. We look in Figure 1 at the data from the two samples with the two different collimation settings, &#8220;high flux&#8221;: 1.2 x 0.8 mm (v x h), or &#8220;high resolution&#8221;: 0.6 x 0.5 mm (v x h). The direct comparison shows no difference, except very close to the beamstop, which is to be expected due to smearing and shadowing effects. Case closed? Not quite.<\/p>\n<figure id=\"attachment_2420\" aria-describedby=\"caption-attachment-2420\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_relative.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2420\" src=\"http:\/\/www.lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_relative-300x225.png\" alt=\"A comparison of the signals of two samples, showing the fractional signal difference between the different collimation settings on a lab SAXS instrument. \" width=\"300\" height=\"225\" srcset=\"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_relative-300x225.png 300w, https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_relative-326x245.png 326w, https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_relative-80x60.png 80w, https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_relative.png 576w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-2420\" class=\"wp-caption-text\">Figure 2: A comparison of the signals of two samples, showing the fractional signal difference between the different collimation settings on a lab SAXS instrument.<\/figcaption><\/figure>\n<p>A double-logarithmic plot hides all kinds of effects. We can do a better comparison, by looking at the fractional difference between the scattering patterns (Figure 2). Doing that, we see that there is a significant and systematic deviation in the data from different collimations, on the order of a few percent. This difference is consistent between the two samples.<\/p>\n<p>One mystery remains about its shape, however. I have no idea why the curve is S-shaped. Further experiments will follow in the near future to shed more light and X-rays on this.<\/p>\n<p>Now you may think I&#8217;m (dutch:) &#8220;ant-fucking&#8221; about these quite tiny differences. But when I get complaints about my habit of constraining the uncertainties to be no less than 1%,\u00a0 I feel the need to do these tests. They show that data accuracy in SAXS isn&#8217;t quite as good as we may intuitively think, and I hope I can demonstrate this.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>Last week, I&#8217;ve had the pleasure of visiting France for three days, seeing Olivier Tach\u00e9 and friends at CEA, Javier P\u00e9r\u00e9z and co. at Soleil <a class=\"mh-excerpt-more\" href=\"https:\/\/lookingatnothing.com\/index.php\/archives\/2394\" title=\"Got to France, tested coherence effects.\">[&#8230;]<\/a><\/p>\n<\/div>","protected":false},"author":2,"featured_media":2420,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-2394","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/lookingatnothing.com\/wp-content\/uploads\/2017\/03\/HRvsHF_relative.png","jetpack_shortlink":"https:\/\/wp.me\/p1gZ2v-CC","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/posts\/2394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/comments?post=2394"}],"version-history":[{"count":3,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/posts\/2394\/revisions"}],"predecessor-version":[{"id":2423,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/posts\/2394\/revisions\/2423"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/media\/2420"}],"wp:attachment":[{"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/media?parent=2394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/categories?post=2394"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/tags?post=2394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}