{"id":199354,"date":"2024-12-20T19:19:07","date_gmt":"2024-12-20T19:19:07","guid":{"rendered":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/12\/20\/eyelashes-special-features-help-fling-water-from-the-eyes\/"},"modified":"2024-12-20T19:19:07","modified_gmt":"2024-12-20T19:19:07","slug":"eyelashes-special-features-help-fling-water-from-the-eyes","status":"publish","type":"post","link":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/12\/20\/eyelashes-special-features-help-fling-water-from-the-eyes\/","title":{"rendered":"Eyelashes\u2019 special features help fling water from the eyes"},"content":{"rendered":"<div style=\"text-align:center\"><img loading=\"lazy\" decoding=\"async\" width=\"763\" height=\"456\" src=\"https:\/\/i3.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2024\/11\/survey_cta_footprint.jpg?resize=763,456&amp;ssl=1\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Eyelashes\u2019 special features help fling water from the eyes\" title=\"Eyelashes\u2019 special features help fling water from the eyes\" \/><\/div> \r\n<br><div>\n\t\t\t<div class=\"rich-text rich-text--with-sidebar single__rich-text___RmCDp\" data-component=\"video-embed\">\n\t\t\t\t\n\n\n\n\n<p>Next time you\u2019re caught in the rain, thank your eyelashes for keeping your vision clear.<\/p>\n\n\n\n<p>Experiments with human eyelashes and eyelash-mimicking fibers pinpoint several features that help\u00a0<a href=\"https:\/\/doi.org\/10.1126\/sciadv.adr2135\" target=\"_blank\" rel=\"noopener\">fling water away from the eyes<\/a>, researchers from the Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences report December 20 in\u00a0<em>Science Advances<\/em>.\u00a0<\/p>\n\n\n\n<p>The exterior of an eyelash, or cuticle, acts like a \u201cmicro-ratchet,\u201d the researchers report. Water can flow easily from root to tip but not in the opposite direction, thanks to scales that overlap like shingles on a roof. When the scientists dipped loose eyelashes in water and pulled them out again, more force was required to move the eyelash when the water was working against the ratchet than when going with it. And by dripping water on loose eyelashes, the researchers showed that the hairs are hydrophobic, meaning that water beads up on them and tends to roll off.\u00a0<\/p>\n\n\n<aside class=\"sn-conversion rich-text rich-text--with-sidebar\">\n<style><![CDATA[\n.email-conversion {\n  border: 1px solid #ffcccb;\n  color: white;\n  margin-top: 50px;\n  background-image: url(\"\/wp-content\/themes\/sciencenews\/client\/src\/images\/cta-module@2x.jpg\");\n  padding: 20px;\n  clear: both;\n}\n\n]]><\/style>\n\n\n\n<div class=\"rich-text embedded-conversion-content is-layout-flow wp-block-group-is-layout-flow\">\n<a href=\"https:\/\/docs.google.com\/forms\/d\/e\/1FAIpQLSf83OekELCTbhuYw3Iu-p8OWiE9-uE56ZFNbeTapotBaa1rIg\/viewform?usp=sf_link\">\n  <\/a><\/div><a href=\"https:\/\/docs.google.com\/forms\/d\/e\/1FAIpQLSf83OekELCTbhuYw3Iu-p8OWiE9-uE56ZFNbeTapotBaa1rIg\/viewform?usp=sf_link\">\n<\/a>\n\n<style><![CDATA[\n#dynamic-conversion {\n  border: 1px solid #ffcccb;\n  max-width: 100%;\n  height: auto;\n  clear: both;\n}\n]]><\/style>\n\n\n\n\n<\/aside>\n\n\n<p>Eyelashes approximate a shape called a brachistochrone, a curve that minimizes the time it takes to get from point A to B under the force of gravity. Using arrays of nylon fibers with similar dimensions and elasticity as eyelashes, the researchers compared fibers in the shape of a brachistochrone with fibers that were straight or curved in another shape. The droplets slid fastest off the brachistochrone.\u00a0<\/p>\n\n\n\n<p>Known to\u00a0<a href=\"https:\/\/www.sciencenews.org\/article\/eyes-have-it-long-lashes-not-so-lovely\">guard against dust<\/a>, eyelashes haven\u2019t been recognized for their water-wicking superpower (<em>SN: 2\/24\/15<\/em>). In addition to helping out in a rainstorm, the effect could come into play when bathing, sweating or crying. Beauty treatments could mess with this ability, however. Mascara can make eyelashes attract water instead of repelling it, the scientists note, and curling the lashes alters their shape. <\/p>\n\n\n\n\t\t\t<\/div> <!-- \/.rich-text -->\n\t\t\t\n<footer class=\"article-footer__wrapper___eChRS article-footer__with-sidebar___9oDuK\">\n\t\t\t<p class=\"article-footer__feedback___sNXjz\">Questions or comments on this article? E-mail us at\u00a0<a href=\"https:\/\/www.sciencenews.org\/article\/mailto:feedback@sciencenews.org\">feedback@sciencenews.org<\/a> | <a href=\"https:\/\/www.sciencenews.org\/permission-republish\">Reprints FAQ<\/a><\/p>\n\t\n\t\n\t\n\t\n\n\n\t\n<div class=\"author-bio__wrapper___ODe-4\">\n\t\t\t<figure class=\"author-bio__figure___e3jd0\">\n\t\t\t<a class=\"author-bio__thumbnail___TixlC\" href=\"https:\/\/www.sciencenews.org\/author\/emily-conover\" aria-hidden=\"true\" tabindex=\"-1\">\n\t\t\t\t<img width=\"80\" height=\"80\" class=\"attachment-avatar-thumbnail size-avatar-thumbnail\" alt=\"Emily Conover\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2019\/08\/e_conover.jpg?w=500&amp;ssl=1 500w, https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2019\/08\/e_conover.jpg?resize=186%2C186&amp;ssl=1 186w, https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2019\/08\/e_conover.jpg?resize=383%2C383&amp;ssl=1 383w, https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2019\/08\/e_conover.jpg?resize=450%2C450&amp;ssl=1 450w, https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2019\/08\/e_conover.jpg?resize=214%2C214&amp;ssl=1 214w\" sizes=\"auto, (max-width: 80px) 100vw, 80px\" data-attachment-id=\"952654\" src=\"https:\/\/www.sciencenews.org\/e_conover\" data-orig-file=\"https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2019\/08\/e_conover.jpg?fit=500%2C500&amp;ssl=1\" data-orig-size=\"500,500\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;AllRightsReserved&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Emily Conover\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2019\/08\/e_conover.jpg?fit=383%2C383&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2019\/08\/e_conover.jpg?fit=450%2C450&amp;ssl=1\" tabindex=\"0\" role=\"button\"\/>\t\t\t<\/a>\n\t\t<\/figure>\n\t\n\t<div class=\"author-bio__content___F9GU3\">\n\t\t\n\n\t\t<div class=\"author-bio__bio___jkxvt\">\n\t\t\t<p>Physics writer Emily Conover has a Ph.D. in physics from the University of Chicago. She is a two-time winner of the D.C. Science Writers\u2019 Association Newsbrief award.<\/p>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\t<aside class=\"sn-conversion rich-text rich-text--with-sidebar\">\n<style><![CDATA[\n.donate-box {\n  border-top: 7px solid red !important;\n  border: 1px solid #ffcccb;\n  margin-top: 50px;\n  background-color: #fdfbf2;\n  padding: 20px;\n}\n.from-nature-index__heading___AhgOe {\n  display: none;\n}\n]]><\/style>\n\n\n\n<style><![CDATA[.from-nature-index__heading___AhgOe {\n    display: none;\n}]]><\/style><div id=\"donateConversion\" class=\"wp-block-group donate-box\">\n<p class=\"has-text-align-left\" style=\"font-size:1.1em\">\nWe are at a critical time and <strong><mark>supporting science journalism \nis more important than ever<\/mark><\/strong>. <em>Science News<\/em> and our \nparent organization, the Society for Science, need your help to strengthen \nscientific literacy and ensure that important societal decisions are made \nwith science in mind.<\/p>\n\n<p class=\"has-text-align-left\" style=\"font-size:1.1em\">\nPlease \n<a href=\"https:\/\/www.sciencenews.org\/subscribe1-print-digital?key=9MENDCON&amp;utm_source=end-of-article&amp;utm_medium=site&amp;utm_campaign=non-sub-control\">\nsubscribe to <em>Science News<\/em> and <strong>add $16<\/strong><\/a> to expand \nscience literacy and understanding.\n<\/p>\n\n\n\n\n<\/div>\n<\/aside><\/footer>\n\t\t<\/div>\r\n<br>\r\n<br><a href=\"https:\/\/www.sciencenews.org\/article\/eyelashes-water-drops\">Source link <\/a>","protected":false},"excerpt":{"rendered":"<p>Next time you\u2019re caught in the rain, thank your eyelashes for keeping your vision clear. Experiments with human eyelashes and eyelash-mimicking fibers pinpoint several features that help\u00a0fling water away from the eyes, researchers from the Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences report December 20 in\u00a0Science Advances.\u00a0 The exterior of [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":199355,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":"","fifu_image_url":"https:\/\/www.sciencenews.org\/wp-content\/uploads\/2024\/11\/survey_cta_footprint.jpg","fifu_image_alt":"","footnotes":""},"categories":[606],"tags":[156484,1587,3837,112965,6303,556],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/199354"}],"collection":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/comments?post=199354"}],"version-history":[{"count":1,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/199354\/revisions"}],"predecessor-version":[{"id":199356,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/199354\/revisions\/199356"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media\/199355"}],"wp:attachment":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media?parent=199354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/categories?post=199354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/tags?post=199354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}