SciShow: Salmon Can Turn on Night Vision. Why Cant We?

Teacher or professor: SciShow
Subject: Science
Content of the Lesson: Most of us can only see certain wavelengths of light our entire lives. So why can salmon switch on night vision? We'll learn how they can reshape their eyes to see into the infrared. Hosted by: Stefan Chin (he/him) ---------- 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: Matt Curls, Alisa Sherbow, Dr. Melvin Sanicas, Harrison Mills, Adam Brainard, Chris Peters, charles george, Piya Shedden, Alex Hackman, Christopher R, Boucher, Jeffrey Mckishen, Ash, Silas Emrys, Eric Jensen, Kevin Bealer, Jason A Saslow, Tom Mosner, Tomás Lagos González, Jacob, Christoph Schwanke, Sam Lutfi, Bryan Cloer ---------- Looking for SciShow elsewhere on the internet? SciShow Tangents Podcast: https://scishow-tangents.simplecast.com/ TikTok: https://www.tiktok.com/@scishow Twitter: http://www.twitter.com/scishow Instagram: http://instagram.com/thescishowFacebook: http://www.facebook.com/scishow #SciShow #science #education #learning #complexly ---------- Sources: https://pubmed.ncbi.nlm.nih.gov/16292551/ https://www.cell.com/current-biology/fulltext/S0960-9822(15)01246-4 https://royalsocietypublishing.org/doi/10.1098/rsos.170362 https://source.wustl.edu/2015/11/freshwater-fish-amphibians-supercharge-their-ability-to-see-infrared-light/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3546623/ https://link.springer.com/article/10.1007/s10750-022-04932-7 https://askabiologist.asu.edu/rods-and-cones https://thebrain.mcgill.ca/flash/d/d_02/d_02_m/d_02_m_vis/d_02_m_vis.html https://thebrain.mcgill.ca/flash/i/i_02/i_02_m/i_02_m_vis/i_02_m_vis.html#2 https://thebrain.mcgill.ca/flash/a/a_02/a_02_m/a_02_m_vis/a_02_m_vis.html#2 https://journals.physiology.org/doi/abs/10.1152/jappl.1949.1.11.807 Image Sources: https://www.gettyimages.com/detail/photo/silhouette-of-a-man-standing-in-a-dark-room-lit-by-royalty-free-image/1178720669?phrase=dark+house&adppopup=true https://www.gettyimages.com/detail/photo/salmon-in-rays-of-light-royalty-free-image/486139401?phrase=salmon+swimming+underwater&adppopup=true https://www.gettyimages.com/detail/photo/on-my-way-back-royalty-free-image/1048000862 https://www.nature.com/articles/s41598-020-63997-3 https://www.nasa.gov/directorates/heo/scan/spectrum/overview/index.html https://www.gettyimages.com/detail/photo/eye-detail-australian-salmon-royalty-free-image/1318624878?phrase=salmon+eye&adppopup=true https://www.gettyimages.com/detail/illustration/photoreceptor-cells-royalty-free-illustration/836368180?phrase=photoreceptor&adppopup=true https://commons.wikimedia.org/wiki/File:Leopard_Frog_(30223128018).jpg https://www.gettyimages.com/detail/photo/recording-heat-loss-at-the-house-royalty-free-image/513904309?phrase=infrared&adppopup=true https://www.gettyimages.com/detail/photo/cock-salmon-leaping-vertical-royalty-free-image/531973602?phrase=salmon+swimming&adppopup=true https://commons.wikimedia.org/wiki/File:Leopard_Frog_2_(30223123828).jpg https://www.gettyimages.com/detail/video/sockeye-salmon-jumping-brooks-falls-in-katmai-national-stock-footage/1406815575?adppopup=true https://www.gettyimages.com/detail/photo/wild-salmon-underwater-migration-royalty-free-image/1338749711?phrase=salmon+swimming&adppopup=true https://www.gettyimages.com/detail/illustration/enzyme-vector-illustration-labeled-cycle-and-royalty-free-illustration/1061592944?phrase=enzyme&adppopup=true https://www.gettyimages.com/detail/video/fresh-organic-carrots-closeup-stock-footage/146234651?adppopup=true https://www.gettyimages.com/detail/video/close-up-of-salmon-stock-footage/1290473347?adppopup=true https://www.gettyimages.com/detail/photo/salmon-columbia-river-oregon-royalty-free-image/614738742?phrase=salmon+underwater&adppopup=true https://www.gettyimages.com/detail/photo/which-is-better-1-or-2-royalty-free-image/1306474551?phrase=vision+test&adppopup=true https://www.gettyimages.com/detail/video/coho-silver-salmon-stock-footage/1178134504?adppopup=true https://www.gettyimages.com/detail/photo/night-vision-goggles-on-military-helmet-closeup-royalty-free-image/1404026967?phrase=night+vision+goggles&adppopup=true


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