{"id":3341,"date":"2016-04-05T14:55:35","date_gmt":"2016-04-05T18:55:35","guid":{"rendered":"http:\/\/library.ryerson.ca\/asc\/?p=3341"},"modified":"2020-05-19T15:02:01","modified_gmt":"2020-05-19T19:02:01","slug":"feature-from-the-collections-the-model-slide-rule","status":"publish","type":"post","link":"https:\/\/library.torontomu.ca\/asc\/2016\/04\/feature-from-the-collections-the-model-slide-rule\/","title":{"rendered":"Feature from the Collections: The Model Slide Rule"},"content":{"rendered":"\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><a href=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Model.jpg\"><img decoding=\"async\" data-attachment-id=\"3346\" data-permalink=\"https:\/\/library.torontomu.ca\/asc\/2016\/04\/feature-from-the-collections-the-model-slide-rule\/slide-rule-model\/\" data-orig-file=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Model.jpg\" data-orig-size=\"2408,1562\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;4.5&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;NIKON D40&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1377768846&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;32&quot;,&quot;iso&quot;:&quot;400&quot;,&quot;shutter_speed&quot;:&quot;0.076923076923077&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;The Model Slide Rule, hung on display at the Ryerson Archives&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Model-300x194.jpg\" data-large-file=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Model-600x389.jpg\" data-src=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Model-600x389.jpg\" alt=\"The Model Slide Rule (RG 221.10), image\" class=\"wp-image-3346 lazyload\" width=\"766\" height=\"497\" data-srcset=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Model-600x389.jpg 600w, https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Model-150x97.jpg 150w, https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Model-300x194.jpg 300w\" data-sizes=\"(max-width: 766px) 100vw, 766px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 766px; --smush-placeholder-aspect-ratio: 766\/497;\" \/><\/a><figcaption><span class=\"image-caption-text\">The Model Slide Rule (<a href=\"https:\/\/archives.library.ryerson.ca\/index.php\/model-slide-rule\" target=\"_blank\" rel=\"noreferrer noopener\">RG 221.10<\/a>)<\/span><\/figcaption><\/figure><\/div>\n\n\n\n<p>One of the Archives longest artifacts (when fully extended it reaches 18 feet), this model slide rule was donated by the Mathematics, Physics, and Computer Science Department. It was used for demonstration purposes in the classroom. It served as a useful visual aide by instructors who would need to explain concepts on the chalk board to a classroom of students. The students could then follow along with their respective slide rules.<\/p>\n\n\n\n<p>The slide rule was developed in the 17th century and was used for calculations in science and engineering before the advent of the pocket calculator.<\/p>\n\n\n\n<p>Donald Mordell, Ryerson&#8217;s President from 1970-1974, also donated his personal slide rule and case. He was a distinguished international engineer and academic.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><a href=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Mordell2.jpg\"><img decoding=\"async\" data-attachment-id=\"3348\" data-permalink=\"https:\/\/library.torontomu.ca\/asc\/2016\/04\/feature-from-the-collections-the-model-slide-rule\/slide-rule-mordell2\/\" data-orig-file=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Mordell2.jpg\" data-orig-size=\"2750,1634\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;4.8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;NIKON D40&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1377769085&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;38&quot;,&quot;iso&quot;:&quot;400&quot;,&quot;shutter_speed&quot;:&quot;0.16666666666667&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Donald Mordell&amp;#8217;s slide rule and case. (Artifact 563, shelf 642)&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Mordell2-300x178.jpg\" data-large-file=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Mordell2-600x356.jpg\" data-src=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Mordell2-600x356.jpg\" alt=\"Donald Mordell&#039;s slide rule and case. (F 422.42), image\" class=\"wp-image-3348 lazyload\" width=\"760\" height=\"451\" data-srcset=\"https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Mordell2-600x356.jpg 600w, https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Mordell2-150x89.jpg 150w, https:\/\/library.torontomu.ca\/asc\/files\/2013\/08\/Slide-Rule-Mordell2-300x178.jpg 300w\" data-sizes=\"(max-width: 760px) 100vw, 760px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 760px; --smush-placeholder-aspect-ratio: 760\/451;\" \/><\/a><figcaption><span class=\"image-caption-text\">Donald Mordell&#8217;s slide rule and case. (<a href=\"https:\/\/archives.library.ryerson.ca\/index.php\/slide-rule-and-case\" target=\"_blank\" rel=\"noreferrer noopener\">F 422.42<\/a>)<\/span><\/figcaption><\/figure><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>One of the Archives longest artifacts (when fully extended it reaches 18 feet), this model slide rule was donated by the Mathematics, Physics, and Computer Science Department. It was used for demonstration purposes in the classroom. It served as a &hellip; <a href=\"https:\/\/library.torontomu.ca\/asc\/2016\/04\/feature-from-the-collections-the-model-slide-rule\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":51,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[7,10],"tags":[],"class_list":["post-3341","post","type-post","status-publish","format-standard","hentry","category-archives","category-feature-from-the-collections"],"acf":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2HpLS-RT","_links":{"self":[{"href":"https:\/\/library.torontomu.ca\/asc\/wp-json\/wp\/v2\/posts\/3341","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/library.torontomu.ca\/asc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/library.torontomu.ca\/asc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/library.torontomu.ca\/asc\/wp-json\/wp\/v2\/users\/51"}],"replies":[{"embeddable":true,"href":"https:\/\/library.torontomu.ca\/asc\/wp-json\/wp\/v2\/comments?post=3341"}],"version-history":[{"count":10,"href":"https:\/\/library.torontomu.ca\/asc\/wp-json\/wp\/v2\/posts\/3341\/revisions"}],"predecessor-version":[{"id":7413,"href":"https:\/\/library.torontomu.ca\/asc\/wp-json\/wp\/v2\/posts\/3341\/revisions\/7413"}],"wp:attachment":[{"href":"https:\/\/library.torontomu.ca\/asc\/wp-json\/wp\/v2\/media?parent=3341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/library.torontomu.ca\/asc\/wp-json\/wp\/v2\/categories?post=3341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/library.torontomu.ca\/asc\/wp-json\/wp\/v2\/tags?post=3341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}