SciShow: Why Do Things Look Blurry Underwater?

Teacher or professor: SciShow
Subject: Science
Content of the Lesson: If you’ve been brave enough to open your eyes underwater, you might have noticed that everything is blurry. But fish have no trouble finding their way beneath the waves. So why can’t we see as clearly below as we do above? Hosted by: Rose Bear Don't Walk SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Marwan Hassoun, Jb Taishoff, Bd_Tmprd, Harrison Mills, Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Sam Buck, Christopher R Boucher, Eric Jensen, Lehel Kovacs, Adam Brainard, Greg, Ash, Sam Lutfi, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, charles george, Alex Hackman, Chris Peters, Kevin Bealer ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://www.researchgate.net/profile/Lars_Gislen2/publication/8186298_On_the_optical_theory_of_underwater_vision_in_humans/links/5e6fb01c299bf12063f7df78/On-the-optical-theory-of-underwater-vision-in-humans.pdf https://dx.doi.org/10.1016%2Fj.semcdb.2007.10.011 www.britannica.com/science/human-eye https://books.google.com/books?id=uXSK6hDKFC0C&lpg=PP1&pg=PT84#v=onepage&q=semi%20aquatic&f=false https://courses.edx.org/c4x/MITx/9.01x/asset/fish_lens.pdf https://www.nature.com/articles/435157a https://anatomypubs.onlinelibrary.wiley.com/doi/pdf/10.1002/ar.20529 https://www.sciencedirect.com/science/article/abs/pii/S1367048418310452 Image Sources: https://www.storyblocks.com/video/stock/sparse-blue-soda-bubbles-background-with-loop-h9igreajeiupxpqrc https://www.storyblocks.com/video/stock/very-cute-blowfish-in-the-water-sauveai7sjz52rfsq https://www.istockphoto.com/vector/flashlight-vector-icon-gm942727746-257630098 https://www.istockphoto.com/photo/blue-glass-gm471391755-20118037 https://www.istockphoto.com/vector/realistic-human-eyeball-eye-retina-structure-round-iris-texture-anatomy-object-gm1254563147-366726080 https://www.istockphoto.com/vector/brain-anatomy-vector-gm1162837999-319109740 https://www.istockphoto.com/vector/question-mark-icon-on-black-and-white-vector-backgrounds-gm832138684-135394135 https://www.storyblocks.com/video/stock/a-view-up-to-the-ocean-surface-from-deep-underwater-hh7rfzgp8k8ha2v7f https://www.istockphoto.com/vector/climbing-perch-published-in-1868-gm482329992-70159631


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