{"id":5214,"date":"2019-11-23T02:22:52","date_gmt":"2019-11-23T11:22:52","guid":{"rendered":"https:\/\/folio.solidsight.net\/?p=5214"},"modified":"2025-11-01T22:04:48","modified_gmt":"2025-11-02T07:04:48","slug":"lock-machinery-c-o-canal","status":"publish","type":"post","link":"https:\/\/folio.solidsight.net\/?p=5214","title":{"rendered":"Lock Machinery, C &amp; O Canal"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-5205\" src=\"https:\/\/folio.solidsight.net\/wp-content\/uploads\/2019\/11\/PG8_1873-297x300.jpg\" alt=\"\" width=\"297\" height=\"300\" srcset=\"https:\/\/folio.solidsight.net\/wp-content\/uploads\/2019\/11\/PG8_1873-297x300.jpg 297w, https:\/\/folio.solidsight.net\/wp-content\/uploads\/2019\/11\/PG8_1873-768x776.jpg 768w, https:\/\/folio.solidsight.net\/wp-content\/uploads\/2019\/11\/PG8_1873-792x800.jpg 792w, https:\/\/folio.solidsight.net\/wp-content\/uploads\/2019\/11\/PG8_1873.jpg 1200w\" sizes=\"auto, (max-width: 297px) 100vw, 297px\" \/><\/p>\n<p>This device is mounted next to Lock 10 on the old Chesapeake &amp; Ohio Canal, near Cabin John, Maryland.\u00a0 I think it opened &amp; closed a sluice gate that would flood the lock to raise the canal boats up, as they travelled up the Potomac from Washington.\u00a0 Unfortunately, the canal fell into disrepair &amp; stopped being used in the early 20th century.\u00a0 But it was made into a national park, and some of the locks &amp; aqueducts are maintained as historic tourist attractions.<\/p>\n<p>I took this photo with my Sputnik on Provia 100F, around sunset under a cloudy sky.\u00a0 I think my exposure was 2 seconds.\u00a0 I carried a digital SLR with me to serve as my exposure meter (and to take a few 2D photos &amp; cha-chas.)<\/p>\n<p>&#8211;Paul Gillis<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This device is mounted next to Lock 10 on the old Chesapeake &amp; Ohio Canal, near Cabin John, Maryland.\u00a0 I think it opened &amp; closed a sluice gate that would flood the lock to raise the canal boats up, as they travelled up the Potomac from Washington.\u00a0 Unfortunately, the canal fell into disrepair &amp; stopped [&hellip;]<\/p>\n","protected":false},"author":41,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[610,607],"tags":[213,653,12],"class_list":["post-5214","post","type-post","status-publish","format-standard","hentry","category-d21","category-dragon","tag-fuji-provia-100f","tag-paul-gillis","tag-sputnik"],"_links":{"self":[{"href":"https:\/\/folio.solidsight.net\/index.php?rest_route=\/wp\/v2\/posts\/5214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/folio.solidsight.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/folio.solidsight.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/folio.solidsight.net\/index.php?rest_route=\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/folio.solidsight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5214"}],"version-history":[{"count":3,"href":"https:\/\/folio.solidsight.net\/index.php?rest_route=\/wp\/v2\/posts\/5214\/revisions"}],"predecessor-version":[{"id":5219,"href":"https:\/\/folio.solidsight.net\/index.php?rest_route=\/wp\/v2\/posts\/5214\/revisions\/5219"}],"wp:attachment":[{"href":"https:\/\/folio.solidsight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/folio.solidsight.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/folio.solidsight.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}