Category: Videos
-
The Science Behind the Ishihara Test
Footnotes FOOTNOTE 1: CONE MOSAIC (5:07) The small changes in luminosity curve are often due to differences in the cone mosaic. The retina is made up of the four photoreceptors (3 cones and 1 rod), but these proportions change from person to person. Some people have more red cones and some more green cones, and…
-
How a made-up color blindness infiltrated the internet
Footnotes FOOTNOTE 1: ANOMYLIZE While this is not a real word, it is supposed to be derived from “-anomaly”. The proper spelling should therefore be ANOMALIZE, not ANOMYLIZE. Yes, it’s a petty thing to complain about, but it’s also indicative of the lazy naming that was happening in these simulations. It’s like they are trying…
-
Nocturnal Bottleneck
Shownotes 1. Rhodopsin The 4 opsins that vertebrates had at the time of the cambrian explosion was just one step short of what we consider the full modern complement of opsins, which includes the 4 classes of cone opsins, plus RH1, used in Rhodopsin. Towards the end of the Cambrian, about 500 million years ago,…
-
COVID + Anosmia
Transcript A few weeks ago, I contracted COVID. It was no weekend at Disneyland, but perhaps thanks to 3 jabs in the arm, I mostly escaped with just a bit of congestion and fatigue… but… the novel symptom for me… was the loss of smell, and I immediately realized… it felt almost perfectly equivalent to…
-
Evolution of Color Vision I – Dawn of Color
“In the land of the colorblind,dichromatic color vision is king.“ – some Hebrew proverb (kinda) Show Notes Evolution of Opsins We made the assumption that the number of unique opsins determines color vision, but is this true? If all we need are photoreceptors to be sensitive to different wavelengths of light, there are ways of…
-
Photobiomodulation
Show Notes PHOTOBLEACHING You may be familiar with photobleaching. This is the process by which photoreceptors are saturated with light, and therefore stop working temporarily. This was once a fad on youtube to use your phone flash, shining through your eyelid – thereby being filtered red by your blood – to saturate your red cones…
-
Cooking Meat without Color
Show Notes Plant Based Meat Like any kind of food – including vegetables – plant-based meats can be infected by bacteria like e. coli. However, they are also significantly less likely to harbor bacteria than real meat. So while they will not taste GOOD undercooked, there is very little foodborne illness risk to undercooking plant…
-
When Pseudoscience “Cures” Colorblindness
Transcript Lads, I’ve done it, I’ve cured my colorblindness, it is gone. I’m mad excited that I can see all the colours, and all I had to do was spend 3 months rinsing my eyes with this simple house-hold clean… Stop… who do you think you are, Joe Rogan? Guys, do not pour anything in…
-
Designing a Colorblind-Friendly Traffic Light
Transcript In the past month while prepping this video, I’ve learned that people really love traffic lights… there is a huge romantic subculture dedicated to traffic lights and it’s not just people like this… It’s also people like Tony, whose idea of a man cave is colorblind nightmare fuel. Now, for all the Tony’s out…
-
Do EnChroma Glasses “Work”?
Transcript You’ve seen the videos. Burly men put on EnChroma glasses, break down in tears, melt your heart… and for a brief moment, remind you that the world isn’t all politics, global warming and anti-vaxxers. The comments on these videos are brimming with people who are inspired by such anonymous internet emotion… inspired enough to…