Not Everyone Can See Haidinger's Brush-Can You?
2021 ж. 12 Мау.
1 491 744 Рет қаралды
Checkout Mel Science boxes here! melscience.com/s1x/
Use code 'ACTIONLAB' for 50% off your first month
I show you how some people can see the direction of polarized light and show you how to see it.
My shorts channel: / @actionlabshorts
Get Your Experiment Box Here: theactionlab.com/
Checkout my experiment book: amzn.to/2Wf07x1
Follow me on Twitter: / theactionlabman
Facebook: / theactionlabofficial
Instagram: / therealactionlab
if you are actually seeing it, it will tilt as you tilt your head. For me when I looked through the polarizer I saw blue the brightest and yellow was faint. But on the screen yellow was the brightest. This may be different for different people though.
cool
For me, I see the yellow brightest and blue after I see yellow
Humm. 🤔👍
I see it as light yellow
Yep
Me, on my phone: I'm sure that was cool.
I could see it on my phone Barely
You could orient your phone to make it work. If you have polarized sunglasses, put them on and rotate your phone until it dims or turns purple. That's the angle you should try to see this "brush" at
I am on phone I see it it doesn't change lol
@@EfrenMunoz313 most phones do not use the polarized light anymore. They use oled's that are directly viewable.
@@allhumansarejusthuman.5776 That might explain why I can see it on my older phone.
The Action Lab: "Not Everyone Can See Haidinger's Brush-Can You?" Me: No, but I will blame my monitor.
Same
I see it
I have two monitors. I can see it much better on one than on the other.
Same
I see it it's a yellow line going in-between two light blue dots like a plus sign
With the particular presentation in this video it's also possible that you're going to see a persistence aftereffect from having stared at the yellow and blue nodes.
This indeed seems to be the case -- after he quit showing the pattern, I saw it rotated 90 ` for several seconds before it eventually faded away.
Real Haidinger's brush has an unbroken yellow part, and broken blue. When you tilt your head, its orientation won't follow your eyes. A negative afterimage of a picture of Haidinger's brush has an unbroken blue part, and broken yellow. When you tilt your head, its orientation will follow your eyes.
@@magentamonster . . . And that's what I got.
I thought so too, but as I rotate my head one way the 'brush' rotates the reverse.
I got the afterimage from staring at a fullscreen Notepad and then tipping my head -- didn't notice much while my head was upright, but a strong yellow when tipped. I presume that means I'm seeing, but not easily perceiving, a blue while my head is level?
The last time I was at an eye doctor's, I was able to tell the screen they were using was polarized because I've discovered that one of my eyes starts hurting when staring at polarized light in a dark room and everything starts to look weird with that eye.
I hope you told your doctor about that
Me with macular albinism trying to see it. Him: it occurs in the macula. Me: Oh, well damn.
ouch. what sort of unique visual quirks are associated with macular albinism
Incredibly niche, unrelatable moment
@@scheezy Lol, look at you with your functioning eyes over here.
@@expertoflizardcorrugation3967 Legal blindness, nystsgmus, light sensitivity, strabismus ( though that part has mostly corrected itself since childhood) lack of pigment in skin. With a special pair of glasses i am able to drive though.
@@lbrown21494 does it effect your perception of colour properly. from what I can find it mostly decreases general visual acuity and image quality as opposed to recognition of wavelengths
When I saw "Includes paid promotion" I started to pray for not being Raid Shadow Legends.
Still better than Manscaped.
Add a public reply...
Agrega una respuesta pública...
@@nou4898 Drop a nuke on Iraq...
@@mr.stealyourspaghetti8004 as an Iraqi I give you full permission to do so
I like your content, but I find it a bit polarizing...
Weird that this doesn't have a thousand likes
@@smilloww2095its just being recommended, you replied this one hour ago in a 2 year old comment leading for it to be recommended to me, just wait a little and you will (probably) see
@@RichD1 2 years to make a massive comeback lol
I see what you did there But I needed some sunglasses
😂
As a child, I always stopped and stared at the puddle in the parking lot. The oil on the top made a polarizing effect. I tried to explain it to my parents, but they couldn't see it.
I haven't noticed that effect in awhile, come to think of it..... Do you still notice it?
Wait, not everyone can see it?
Wait they can't see it?
@@heyyo3746 No, not the ones I was looking at.
@@w13rdguy angles
The "hey everyone" never gets old
""Hey everyone today I'm going to be....""
I'm a chess lover; I feel offended. Edit: That was just a joke... The most popular chess channel "agadmator" starts his videos by *"Hello* everyone!" that's why I said I feel offended for saying "Hey everyone"
@@LeventK why?
yea will nerver get old
@@LeventK what are you talking about
What's amazing about him is he has very good knowledge of biology, chemistry & physics and he knows how to use them
And he knows how to give the information as interesting as possible
Honestly if you invest 2 years into studying each of the abovementioned sciences you can be just as good as him
@@tubax926 Meh, the only reason these subjects interest me, is purely because this guy explains everything so well. I am not dedicated enough to grab the books and learn
@@tubax926 that’s also a problem with schools, only one year to teach a bunch of subjects and people lose interest so fast
@@aquacelot i choose learning german in my school, now i don't want to learn it from school but still wanted to learn
Quick notice for people trying this on phone or tablet. Protective glass strongly depolarizes the light coming from LCD, so it won't work with glass screen protector.
I have been noticing something yellow in my field of view for about a year now only with my iPad on white background when reading. It was quite annoying, I though it was old age and my eyes were going. But so cool to know what it is now. Thanks!
Was it as prominent as when the blue and yellow stuff was shown here or not that intense?
@@user-bf6gz8ej4o Just the yellow not the blue
It’s important to note this might not work in OLED screens, as those don’t need to use polarisers. Furthermore, screen protectors usually scramble the polarisation due to them using a thin plastic film (if you look at a screen protector through a polariser you can see random multicolor interference patterns).
*cries in super AMOLED*
Works on my Kindle
Worked on mine (mate 20 Pro)
Oh so that's why my Zenfone's screen reflection looks fine but my Xiaomi looks like Note 10+'s sugar rush candy racer backdoor
rip :(
Me, on my phone : is this how you feel when you don't get the joke that makes everyone laugh?
yes
😂😂😂😂
What's even worse is when you do get the joke, but are the only one who doesn't find it funny, and you think to yourself "why is that roll-on-the-ground funny to everyone?"
On my phone and I can see it
Me with an old phone
I've seen this around lights constantly since I was young. Around 12 years old I told my mom about it because I thought there might be something wrong with my eyes and she (being a spiritual lady) told me I see auraa. It's neat to have a scientific explanation for what I'm seeing, because I've never shared her spiritual explanation.
“Left polarized light, and right polarized light” Me: There’s a political joke in there somewhere. *Shows the light waves in red and blue* Me: Oh come on.
That's funny
Apparently, if you were randomly dropped anywhere in the United States, you can use the filters in this kit to determine if you're in a blue state or a red state. 😉
@@Robert41265how do swing states then
@@wilyriley_A swing state would be unpolarized. 😉
"that is so cool" "holy cow" can never get old
"woooah! (giggles)"
*so kewl
@@tjsudac kul
Kinda reminds me when i was in india with the holy cows huh no wonder why the name got invented
WOW that's subtle! The moment I took off my normal nearsighted glasses I could see it, because the yellow part switched from being vertical to horizontal. I'm confused how that could happen given the explanation, but it was really cool to see!
I love this channel so much b/c it reminds me of the early days of science communicator youtube. Every video is creative and discusses science topics I've never heard of before. These days, there are countless channels that just rehash what others have talked about already. Awesome work!
Me, when I saw that brush: Woah, I have a super power Me, after realising that it was an image: Oh....damn Me, after the image is gone: AM I BLIND?!
thumbnail: "can you see this?" people with High quality 8K Display : "yep clearly"
Im on 144 p and i can see it, my eyes are pros
@@oscarfine8343 the amount of pixels doesnt really matter, its the color
Me with my 2016 phone : i can see it clearly, cuz i always see it everyday
@@dimp.3102 yep and High quality 8K Display has better color quality, like OLED 8K Display or something
It's neither the color nor the pixel depth, it's the polarization effect and your ability to discern it. In fact the pixel depth is super irrelevant to this one. One giant pixel would do the job just fine. And as for colors, I would *imagine* that the exact same effect is there no matter what, but the color of the light would wash out the effect to the degree that that color interacts with yellow and blue, so if the light was bluish, the blue region would disappear and the yellow region would take a greenish cast...but everything after the word 'imagine' is just speculation.
Me first seeing the polarizer in action: Wow, imagine if there was like something you can wear that would just block all the glares on screens Me like a few seconds later when he gets to the phone: Crap I just accidentally reinvented sunglasses
This title was like those old 99% CAN’T SEE IT videos on KZhead, but the difference being that this video is better then 100 of those videos put together
Optical Engineer here, a lot of the light "information" here is not right. For example, metals do reflect and polarize light. There is a whole field of measurements "metrology" dedicated to thin films and metal polarization detection also known as ellipsometry. Linear polarizers dont work on circular or elliptically polarized light, instead, you need a retarder (compensator), quarter wave plate + a linear polarizer to resolve the polarization of light coming from a metal.
I’ve got the retardation and compensation covered.
Engineer here too. Happens all the time when you get a great education 😪... The "news" is The Worst
I'm no engineer, but I appreciate your comment a lot. The video shocked me a little when the metal film didn't get blocked by the linear polarizer. I thought to myself, "does this mean that metal doesn't polarize light when it reflects? There seems to be a contradiction somewhere." Then you came into the comments and helped clarify it. Thanks.
Thank you for taking your time to explain it.
@@jamescollier3 ho
I remember an Inuit guide describing a similar vision that he used to navigate in the snow. I was so crazy how these guys could get around in wast expanses of white with no landmarks before GPS and compasses were very bad in the Arctic.
You mean, like, being able to see magnetic fields?
😲
@@AGKyran They see the polarized light in the snow and can tel where the sun is on a cloudy day. There are special goggles you can make that will do this too.
Vikings used a sunstone.
That's awesome
I can see it! Had to turn my head down 90 deg to see it better, but its there, about 1/2 the size of the one you started with.
5:17 The normal orientation, it's invisible, but I imagine the starting point is that the yellow line is vertical. If I tilt my head left, the yellow line tilts right, and if I tilt my head right, the yellow line tilts left. It's possible that it's invisible to me when level because I'm used to looking at this screen with a level head, so my brain just filters it out.
I'm gonna second the brain filter theory I can see it while tilting my head, but only while my head is moving Once I stop, it fades away
Oooh thanks! You actually helped me see it consistently. I was beginning to wonder if I was just seeing things because I would see it faintly for only a split second at a time.
*[Macula]:* "You guys say 'Colorado!'" *[Eye Floaty]:* _"I'M A GIRAFFE!!!"_
Underappreciated comment. XD
omg xD
🤣
Who is macula and eye floaty
@@makhtydh, The macula is a part of the eye, and an eye floatie/floater is a little spot you can sometimes faintly see in your vision.
Me: "I can see it, but the blue is horizontal." Video: "Which direction it is depends on how you're tilting your head." me, laying on my side: "Well there you go then."
You see blue?
That’s the polarization of it
@@lionessfit3041 I also saw blue
That happened to me too
I see both of them. Doesn't change when I turn my phone or tilt my head. Yellow: Horizontal Blue: Vertical
i can see it! did take me a bit of time, but yeah, i see it way better when i tilt my head 90° to the left or right, it's way more subtle when i try to see it while keeping my head straight. that's not retinal persistence with the model at the start of the white screen test, because i skipped this part to not influence the test and tried some minutes later to be sure. i tried on my brand new smartphone (amoled) and i can see it too. i noticed that the brush rotating in the OPPOSITE way when i tilt my head, if i tilt it to the right the brush will rotate anti-clockwise. that's very fascinating!
I actually noticed this when looking at computer screens more that a decade ago. I searched for “blue and yellow blob in vision” and got my answer. It’s always fascinated me that some (or most) of us can faintly detect not only polarized light, but the direction of polarization. Really cool. A 6th sense.
If you orient your sunglasses correctly, *Rotates head*. . Driving 10/10
The sun is usually above our heads, so all the polarized sunglasses just block glares from right above sources best and do a decent job when the source is slightly to the side. If the sun is below your head you might better be slightly concerned about your car being upside down.
This is perfect timing! My wife and I were talking about polarized sunglasses and our kids asked what polarization is. This video explains it better than I did so now I can show them this!
ok
ok
ok
ok
I know the feeling, it's humbling but motivating to see someone do something better than you
Pretty neat stuff. I use cross polarization all the time on VFX projects where we need to control which lights are producing specular highlights on objects that are going to be comped in with 3D animated elements. Each light source will have a polarizer that is aligned specifically for that group and the the camera lenses will have a circular polarizer that can be adjusted depending on the lighting group that is needed.
Wow! I couldn't see it at first, and then I got the test image to look more bright, so I tried again with the actual white image and I saw two yellow dots flip sort of diagonally! Cool stuff.
All I could see was how dirty my screen was when I watched this on my TV.
SAME
same
I thought I was special till he took the image away.
Ooooohhhhhh!!!!! That explains something I've always experienced! In some lights I've seen yellow or blue auras...
lol, i recently watched the polirisation phenomenon when sitting in the car and watching the lights with and without glass, finally i understand, thx for sharing
Everyone who can't see it: "Alright, then. Keep your secrets. 😏"
Nice frodo quote 👌
:(
Family caught me staring at a white screen with my sunglasses on. Thanks Action Lab!
Congrats
Congrats
While I didn't see the Brush, I did get the thought to turn my polarized sunglasses and WOW when it dimmed that white background (at around 45 degree tilt) I saw all the spots on my monitor! Thanks for this new tech.
That's really cool. I never would have known that was something other than light play. Mine was 20% the size of the image you showed but visible.
This man looks like hes so sick of life yet he opens my mind to life
He's too smart so now he's just bored
someone else described him as looking like both the happiest and saddest man in the world, which is both perfect and kind of disturbing
@@evilotis01 eyebrows are everything here. I recon anyway, plus he is maybe doing a presenter smile not a genuine one.
Great, another thing that I can't un-see. Someone showed me how to see all the "floaters" one day, now they're with me for life.
For me floaters are kind of like the game. You only lose if you think about it. By the way, you just lost the game
Wait you can purposely see floaters? How???
@@doesntmatter2732 Try looking at a big fluorescent black light bulb (regular, not blue-black) for a minute. You can also see them against the blue of the sky, maybe not quite as well.
@@doesntmatter2732 I guess I should elaborate a bit, we were all tripping one night. A few of my friends were over by the black light, "Can you see them yet?" "Whoa!." I had never heard of floaters, but after looking at the light for a minute or two, I suddenly saw them as well. The sun was coming up, when I went outside and looked against the blue of the sky, I saw a whole bunch of floaters, from that day forward, unfortunately. Once you see them, you can't unsee them. Are you absolutely sure that you want to see them? They have always been with you, but you block, them out, like background noise. But after you notice that spot on the wall, you're might see it the rest of your life. Are you _sure_ that's what you want???
I rarely see floaters, but it's nice when I do. Wouldn't wish for anyone to see them all the time though. But after taking a lot of drugs during about 4 years, I now have phosphenes all the time. I mostly see them at night, it's very easier to see them in dark places. And it's cool. If you start focus at them, they may start to change and make shapes. The more I focus on them, the more they get detailed. It's a fun thing. Also staring for a moment dehydrates your eyes. You can play with it by fixing the ground. It works better on clear repetitive patterns. When you do, it then starts to move. I've done that again recently (don't do it too often!), and it looked like ripples. It's quite awesome. Also, learned the trick where you stay in the dark, and turn on a light above your head on the side of your head. Makes you able to see the blood vessels in your eyes, like a web (it will be in a dark gray most likely).
Actually had a really easy time with this one :) Blue was horizontal, yellow was vertical, and the would each fade in an out, peaking as my head was perpendicular to the orbital
Opposite for me. Blue was vertical
At first I could see it, but it was very faint. Then I tried turning my head sideways and both colors got *way* more intense. Wild!
Yes. But if you are being honest it in part is based on the quality of the screen you are using.
Test like this is not usefull if it wasn't played on same display or on paper and people looking at it from same distance and angle,but it fun tough
@@HanisExperiments you are everywhere
The idea is to look into a diffuse homogenous white backlite that fills your field of view if i understand correctly ?
He’s not talking about the example image he showed, he talking about looking through a polarizing filter at a flat white light source.
@@HanisExperiments I thiink you watch what I watch
I can see it perfectly without the polarizer.
Same
lcd screen huh
I could only see the blue.
Same..... I GUESS I'M A SUPERHERO NOW MOM TIME TO DECIDE A NICKNAME
i think everyone or almost everyone can see it but if you are actually seeing it he said that as you tilt your head you should see it tilting too or something like that which doesnt happen to me
👏🏼👏🏼👏🏼 Amazing!!! I always thought that was something on monitors, I never thought that's something about vision. I thought the yellow part was the light source of the screen and the blue part the areas where were not well lightened. I was looking to the phone and tilted a little, this gradient pattern doesn't fit the screen, because it was bigger, but it changes direction, going to the opposite direction from where I started to tilt. Love this experiment!!!
I noticed is I could see it better focusing slightly "behind" the screen instead of focusing right on the surface of the screen. Also, I have 2 monitors and the angle of yellow/blue cross was different on my older IPS monitor (blue band horizontal) vs newer VA monitor (blue band more vertical), absolutely nutty!
i’m kinda really glad this channel went mainstream. it’s used to be like my guilty pleasure of learning bout random sciency nerdy things, now the comments are flooded with meme replies and inside jokes and action labs lore, lmao. i love it. feels like a hidden gem i like is being shared w the world (in a good way)
This is the moment I realized I've always seen it but never paid attention
Same here, its always been there, just didnt realize what i was looking at.
Is it supposed to be really feint?
@@persephonehades7547 yes absolutely, its almost like a hint of a "second shadow" Its most evident to me in very bright, direct sunlight, with the sun almost overhead, to eliminate other shadows.
Everyone else with the naked eye?
I thought for years that my monitor was messed up. Now I know that it’s just my eyes being awesome.
No way! Is that what that thing is? Whenever I've seen it in the past I've just ignored it, assuming it was just a relic of looking at something else. Like if you stare at an image long enough and then look at a blank wall and see the negative of the image you were just staring at. That's amazing!! Thanks!
6:56 ooo.. what you’re talking about may be why I have great peripheral vision. I have always practiced seeing without moving my eyes or head. It helps so much to be able to look forward and in your side view mirrors (or rear view mirror) simultaneously when driving. Maybe this is different, but it sounds like it is using the same technique.
I actually saw everything, though the yellow was relatively clearer to me than the blue
Same to me
yellow was a lot stronger yes
There's no blue touch liars
@@no_idea0537 there is, just concentrate
For me, blue was more obvious
This is indeed like unlocking a superpower, cool.
69 likes, not gonna ruin it
@@MrBear69 the world needs more people like you
@︎ ︎ ︎ ︎ 😢
I have one eye through which I see clearly, after having 7 ops on the other one for retinal detatchment which see but doesn't focus. So, I can see tons of yellow but not the blue, and that's with no sunglasses. Thanks for sharing this, I saved it to favourites!
This was such a cool video and science experiment. I could see it very faintly if I rotated my head towards my left. I loved this video so much I liked it twice!
Instructions are wrong, ended up activating mangekyo sharingan.
I got a headache after watching that metal reflection... It was as if I was staring at the sun 😂
Turn down your monitor's brightness damnn
that proves that you have a head
@@Sachin-ct3md I wish I had a head 😔
@@SunGodAtomes whar r u sayin ? you need a head 😲
discord people who always rant about light mode and demand dark mode will gonna hate this video 😆
This man had me pausing and squinting at my screen so hard!🤣🤣🤣👌🏾
This is really incredible!!! If I do actually see it. I’m just staring at a white screen rn. Did you come to the Gorge or just stop by Portland??
Y'know, this would be *really* interesting if he actually explained what polarized light is! :D
Light in nature are made of oscillating pairs of magnetic and electric fields. Normal light is like tons of those pairs of waves he showed, but all mooshed and close together and tilted at random angles from each other. Imagine lots of fish randomly swimming serpentine in one direction, but some are upside down, sideways, etc. The polarizers he had are like microscopic window blinds. When the sun shines through your blinds, some light is blocked and you get parallel lines of light on the wall or whatever. Polarizers block all the light waves that aren't parallel to the little blinds on the sheet. So, if some light is LINEARLY polarized, then those polarizers will let it through if its wave can slide through the polarizer slits. The light gets dimmer if it's not lined up perfectly, and gets blocked when the wave is perpendicular.
I was waiting the whole time for him to explain it or point us somewhere we can learn about it lol
@@willbe3043 It just takes a second to search it on KZhead tbh
It means it's cold lmao
Yes. Or you could do your own research further into it. Not that hard and Google is free.
Now I can't unsee it. Very cool!
Thank you for showing me how dirty my laptop screen really is
I just had to clean my phone and my iPad trying to see this thing… 🤣🤣🤣
Me: trying to see it Video: "it occurs in the macula" Me: with swollen optic nerves "ah."
Ahhh, that makes sense
I guess I should save this video as an amateur eye test for inflammation...
this is what they use on cameras while filming shiny surfaces
I have two different model screens. One had the yellow horizontal the other had it vertically. That was very interesting.
I accidentally discovered this a while ago, but I thought it was just my sun glasses being funky. Had no idea this was a normal thing. Super cool.
What he meant by "Not Everyone Can See" he meant people with their blue light filters enabled.
Is it odd that I saw both with and without the blue light filter enabled (LG v50 Thinq)?
I have my blue light filter on and I saw it
You guys might have it at a lower level.
I turned off my blue light filter for this video and saw nothing. I even checked with my polrised sunglasses that my screen is definitely polarised, but I can still not see it
Nah he meant that some people are physically incapable of seeing polarized light.
I just started messing with a polarizing filter on my camera and this made me realize why the filter can still be turned after being screwed in. Don’t know why I didn’t realize it sooner. Thank you.
I wear glasses, and could not see it at first, but after re-watching I heard you said it can depend on the angle of your head, I rotated my head and I could see it so clearly! I'm assuming my glasses must mess with the polarisation in some way...
Yup, I can see it on my phone's screen when it's vertical... very cool, thanks. I just realized I've seen this on my monitor before but didn't know what it was.
I can see it, its smaller than I expected. I could only see the horizontal yellow.
Once I could see yellow, I tilted my phone very slightly left and right, then the blue showed up just barely.
Same here. When I tilt my head left and right the yellow bar rotates a few degrees as well. Very interesting. Now I am going to be seeing that all day as I work at my computer.
yes it seems very small compared to the picture I showed
Whoa the action lab
@@narmathaarulkumar4250 woah a person
Video Idea: Do the opposite where you show how to find your blind spot by closing one eye, extending your arm, stick out your thumb, and move it away from the center of your vision until when you wiggle your thumb, you don't see it.
Why don't you show us instead 😁
@@bilalejaz1682 Vsauce touched on the blind spot of the eye here: kzhead.info/sun/Z61ugZeNj519l2g/bejne.html
you just explained it, now, why we need a video
Remember reading in a book a suggestion that vehicles could use polarised lights & have polarised windscreens to help reduce glare, always wondered if it would work. 🤔
I saw it on my tablet. Reminds me of the "Magic Eye" technique. Also saw I need to clean my screen.
I’ve been trying that on my iPad. I’ve seen all kinds of crazy stuff, but not this. And now I have a headache. 😂
I really like your voice it is so chill… you should do a podcast
Yes
I would pay him to read me a bet time story
The sarcasm levels in this comment are astronomical.
@@kyotaiken not really
@@kyotaiken The stupidity of this comment reaches levels i can't comprehend.
It's amazing how much and how little you can see with your own senses.
Years ago, I had a pair of sunglasses that were both polarizing and UV filtering. Because of this, it could block the glare from some things, but the from the things it couldn't (sun glare off water) had this day-glo royal purple halo. Very pretty, I miss them.
I was actually able to see it on both computer screen and newer phone, it actually showed up better on my phone than on computer screen.
me finding out not everyone can see this: visible confusion
POV: you can both see the blue and yellow at the same brightness regardless of orientation *I am several universes ahead of you*
We are the almighty powerful with our eyes
I am only one universe ahead of everyone. I can do this, but only for blue
I can see both and see which color is overlapping even if the image is blurry
First I didn't see anything but the afterimage, but after some tries I got it to work. For me the yellow bulbs are horizonal and they actually tilt.
Very cool! I’ve probably got some disease, as I saw the yellow bulbs only, they were above center, very small, and they rotated the opposite direction of how I would tilt my head 😂
It looks pretty viewable (if that's even a word), I was able to see it clearly, not clear to the point of where it's not blurry, but it's clear, the white light altough starts to block me from seeing the blue part after a while.
I have a blind patch in the center of my right eye from a pulse laser accident 5 years ago and it still exists. I've gotten so use to it I don't notice it normally unless I'm looking at close lines, grids or anything like a window screen or blinds. The blind spot distorts those things and reminds me of an event horizon. I can't say the spot is black though it's nothing like a dark spot, it's just distorted absence.
It worked on my desktop screen just by opening a blank file. wow!!! But: I had to turn the brightness all the way up to 100 (I usually have it near zero to stop headaches), I had to take off the "nightlight" blue blocking option, and I had to tilt my head VERY slowly. It's more of a "ghost image" type thing, like an afterimage from looking at a bright like....or one of those Magic Eye pictures...but also not quite that. The yellow was mostly horizontal and the blue vertical but it did move a bit along with my head. Science is so fascinating omfg ❤
*bright light ugh typo
I couldn't see it, but this video explains why the heads up display in my truck is barely visible when wearing polarized sunglasses!
I found it way easier to spot the cross for the first time while it is tilting. Because then it moves in relation to the center of vision and changes in vision are always easier to spot for me.
02:00 seems like he himself made a phone stand which alone would be a content for other DIY KZheadrs
It's faint, but it's really interesting to see on my tablet screen, and what convinced me it wasn't image permanence is that what I was seeing was rotated 90 degrees compared to the example, and also worked after a bit of a break, plus, it changes the orientation based on how I rotate the tablet, very cool : )
It’s really hard to make out but it becomes a bit more clear to me when I tilt my head left and right
i thought i couldn't see it, but i tred tilting my head in front of my monitor's white screen and then it popped out super clear :O
The action lab is like my number one place to go on KZhead cuz he actually makes interesting stuff
I saw this effect a few years ago in a similar experiment 😊
I was waiting for the bir reveal and it was just the yellow blue cross I saw all along. So apparently I can see polarized light and didn't know it. Cool! :)
It's a little fainted but still visible.
If you tilt your computer screen (or your head) left or right you can see the blue getting bluer and the yellow getting yellower. pretty cool.