{"page":"\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/resources-572d6a42.css\" /\u003e\n\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/lp_boclips_stylesheets-f4d0de30.css\" media=\"all\" /\u003e\n\u003cdiv data-title='Why Don’t Sheep Shrink In The Rain?' data-url='/boclips/videos/625f61fdb09c1a0537ece5d0' data-video-url='/boclips/videos/625f61fdb09c1a0537ece5d0' id='bo_player_modal'\u003e\n\u003cdiv class='boclips-resource-page modal-dialog panel-container'\u003e\n\u003cdiv class='react-notifications-root'\u003e\u003c/div\u003e\n\u003cdiv class='rp-header'\u003e\n\u003cdiv class='rp-type'\u003e\n\u003ci aria-hidden='true' class='fai fa-regular fa-circle-play'\u003e\u003c/i\u003e\nVideo\n\u003c/div\u003e\n\u003ch1 class='rp-title' id='video-title'\u003e\nWhy Don’t Sheep Shrink In The Rain?\n\u003c/h1\u003e\n\u003cdiv class='rp-actions'\u003e\n\u003cdiv class='mr-1'\u003e\n\u003ca class=\"btn btn-success\" data-posthog-event=\"Signup: LP Signup Activity\" data-posthog-location=\"body_link_boclips\" data-remote=\"true\" href=\"/subscription/new\"\u003e\u003cspan\u003e\u003cspan\u003eGet Free Access\u003c/span\u003e\u003cspan class=\"\"\u003e for 10 Days\u003c/span\u003e\u003cspan\u003e!\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-body'\u003e\n\u003cdiv class='rp-info'\u003e\n\u003cdiv aria-label='Hide resource details' class='rp-hide-info' role='button' tabindex='0'\u003e\u0026times;\u003c/div\u003e\n\u003ci aria-label='Expand resource details' class='rp-expand-info fai fa-solid fa-up-right-and-down-left-from-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003ci aria-label='Compress resource details' class='rp-compress-info fai fa-solid fa-down-left-and-up-right-to-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003cdiv class='rp-rating'\u003e\n\u003cspan class='resource-pool'\u003e\n\u003cspan class='pool-label'\u003ePublisher:\u003c/span\u003e\n\u003cspan class='pool-name'\u003e\n\u003cspan class='text'\u003e\u003ca data-publisher-id=\"30358007\" href=\"/search?publisher_ids%5B%5D=30358007\"\u003eMinuteEarth\u003c/a\u003e\u003c/span\u003e\n\u003c/span\u003e\n\u003c/span\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-description'\u003e\n\u003cspan class='short-description'\u003eWe appreciate your support on Getting wet isn’t REALLY what makes wool shrink; it merely exacerbates the friction between the wool fibers, which is stronger in one direction than another, so when agitated in the washer or dryer, they...\u003c/span\u003e\n\u003cspan class='full-description hide'\u003eWe appreciate your support \u003ca href='https://www.patreon.com/MinuteEarth' target='_blank' rel='nofollow'\u003eon\u003c/a\u003e Getting wet isn’t REALLY what makes wool shrink; it merely exacerbates the friction between the wool fibers, which is stronger in one direction than another, so when agitated in the washer or dryer, they migrate in relation to each other in a process called “felting.” ___________________________________________ To learn more about this topic, start your googling with these keywords: Fiber: a threadlike structure forming part of the muscular, nervous, connective, or other tissue in the human or animal body Felting: the process by which wool or another textile can be agitated, often along with moisture or heat, to cause the fibers to migrate amongst themselves and mat together into a dense smooth surface Ratchet: a device consisting of a bar or wheel with a set of angled teeth that allow motion in one direction only Wool: soft curly or wavy hair forming the coat of a sheep or similar animal, especially when cut off the animal \u0026 prepared for use in making cloth or yarn Mammal: a warm-blooded, bony, \u0026 hairy/furry animal, the females of which give birth to live young and nurse them with milk ___________________________________________ Credits (and Twitter handles): Script Writer: Emily Elert (@eelert) Script Editor: Alex Reich (@alexhreich) Video Illustrator: Qingyang (@QCVisual) Video Director: Henry Reich (@MinutePhysics) Video Narrator: Kate Yoshida (@KateYoshida) With Contributions From: Ever Salazar, Peter Reich, David Goldenberg Music by: Nathaniel \u003ca href='http://www.soundcloud.com/drschroeder' target='_blank' rel='nofollow'\u003eSchroeder\u003c/a\u003e _________________________________________ Like our videos? Subscribe to MinuteEarth on \u003ca href='http://goo.gl/EpIDGd' target='_blank' rel='nofollow'\u003eYouTube\u003c/a\u003e Support us on \u003ca href='https://goo.gl/ZVgLQZ' target='_blank' rel='nofollow'\u003ePatreon\u003c/a\u003e Also, say hello on: \u003ca href='http://goo.gl/FpAvo6' target='_blank' rel='nofollow'\u003eFacebook\u003c/a\u003e \u003ca href='http://goo.gl/Y1aWVC' target='_blank' rel='nofollow'\u003eTwitter\u003c/a\u003e And find us on \u003ca href='https://goo.gl/sfwS6n' target='_blank' rel='nofollow'\u003eitunes\u003c/a\u003e ___________________________________________ If you liked this week’s video, we think you might also like: Is it Better to Walk or Run in the \u003ca href='https://www.youtube.com/watch?v=3MqYE2UuN24' target='_blank' rel='nofollow'\u003eRain?\u003c/a\u003e ___________________________________________ References: Gupta, N. P., Agarwal, R., \u0026 Pant, S. (2009). Factors affecting felting of wool: An overview. Colourage, 56(1). Johnson, N. A., \u0026 Russell, I. (Eds.). (2008). Advances in wool technology. \u003ca href='https://goo.gl/vZ9eCn' target='_blank' rel='nofollow'\u003eElsevier.\u003c/a\u003e Makinson, K. R. (1972). The Role of the Scales of Wool Fibers in Felting and in Shrinkproofing. Wool Sci. Rev, (42), 2-16. Makinson, K. R. (1979). Shrinkproofing of wool (Vol. 8). M. Dekker. Chicago. Menkart, J., \u0026 Speakman, J. B. (1945). Scaliness of Wool Fibres. Nature, 156, 143-\u003ca href='http://www.nature.com/nature/journal/v156/n3953/abs/156143a0.html' target='_blank' rel='nofollow'\u003e143.\u003c/a\u003e van der Vegt, A. K. (1955). A study on the mechanism of wool felting. 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