Visit https://brilliant.org/scishow/ to get started learning STEM for free. The first 200 people will get 20% off their annual premium subscription and a 30-day free trial. We know that not everyone's vision is perfect, which is why some of us need glasses. But some people can also just see more stuff than others! From seeing UV and infrared light, to even having bonus color receptors in our eyes, there are a few ways that some people get more to look at than the rest of us. Corrections: 04:55 The color corresponded with a wavelength that was about double the wavelength of the laser, not frequency. 05:04 The beam had a wavelength of 1000nm that the people saw as a light with a wavelength of near 500nm, not wave frequency. Hosted by: Rose Bear Don't Walk (she/her) ---------- 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://www.academia.edu/21379026/Color_Vision_Neural_Basis_of https://www.aao.org/eye-health/tips-prevention/how-humans-see-in-color https://www.nei.nih.gov/learn-about-eye-health/healthy-vision/how-eyes-work https://pubmed.ncbi.nlm.nih.gov/6664798/ https://pubmed.ncbi.nlm.nih.gov/12537646/ https://www.researchgate.net/publication/230988356_Photochemical_and_thermal_reactions_of_kynurenines https://www.nature.com/articles/eye2015266 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4408507/ https://www.pointsdevue.com/article/damage-ultraviolet-lens https://onlinelibrary.wiley.com/doi/full/10.1111/php.13199 https://read.dukeupress.edu/environmental-humanities/article/9/2/378/133024/Astrobiology-and-the-Ultraviolet-World https://www.pnas.org/doi/10.1073/pnas.1410162111 https://apps.dtic.mil/sti/pdfs/ADA420757.pdf https://journals.physiology.org/doi/abs/10.1152/jappl.1949.1.11.807 https://opg.optica.org/josa/abstract.cfm?uri=josa-37-7-546 https://opg.optica.org/optica/fulltext.cfm?uri=optica-4-12-1488 https://www.researchgate.net/publication/21892683_Visual_sensitivity_of_the_eye_to_infrared_laser_radiation https://www.ncbi.nlm.nih.gov/books/NBK11059/ https://research.ncl.ac.uk/tetrachromacy/thescience/ https://vision.psychol.cam.ac.uk/jdmollon/papers/JordanMollon2019Tetrachromacy.pdf https://www.gs.washington.edu/academics/courses/pbyers/53105/deeb1.pdf https://pubmed.ncbi.nlm.nih.gov/24458639/ Related video: https://www.youtube.com/watch?v=lgHm5TKBW54 Images: https://commons.wikimedia.org/wiki/File:Claude_Monet_1899_Nadar_crop.jpg https://commons.wikimedia.org/wiki/File:Claude_Monet_-_Wisteria_-_Google_Art_Project.jpg https://commons.wikimedia.org/wiki/File:Water_Lilies_(Agapanthus),_by_Claude_Monet,_Cleveland_Museum_of_Art,_1960.81.jpg https://commons.wikimedia.org/wiki/File:ConeMosaics.jpg https://commons.wikimedia.org/wiki/File:BirdVisualPigmentSensitivity.svg https://webbtelescope.org/contents/media/videos/1090-Video https://www.gettyimages.com/