The three polarizer experiment is the first time I had ever seen quantum physics doing something that was counterintuitive to me. Light shouldn't get through it, dammit!
@@israelRaizer The classic quantum experiments like the double slit experiment require lengthy explanations to show why the results were unexpected and they have nothing to do with real world experience. The results of the three polarizer experiment are immediately counterintuitive. You are putting a dark filter between two other dark filters and *more* light is getting through them now. Anyone will tell you that shouldn't be happening.
@@scottlarson1548 you're just changing the angle of light again, I'm guessing if you put another filter in and change it back it'll be brighter again lol
I discovered this when I was wearing polarized sunglasses in the car on a sunny day, and found I couldn't see the radio display unless I tilted my head, not the best idea when you're driving 🙂
Before simulations for stress analysis, small parts, even a whole car engine would be made out of plastic and study for stress points this way. They used different plastic but the principal is the same.
Funnily enough LCD manufacturers are usually savvy to this, often displays in cars will have polariser angles at the same direction as filters in polarised sunglasses, for some reason mobile phones haven't figured this out ... AMOLED displays don't seem to be as affected, some of them are polariser free.
@@Chlorate299Huh you made me think. Why would OLED displays need a polarizer at all? They emit their own light. I thought it was just a consequence of the way LCDs work.
@@6alecapristrudel For the same reason polarised sunglasses are a thing - light reflecting off a surface is polarised, so some OLED displays include a polariser to reduce reflections.
@@Chlorate299 To be fair, mobile phones have the problem of them being able to function both in portrait and landscape modes. So, no matter in which direction you set up its polarizer, someone's gonna complain xD
I tried ordering food from a snack bar at the beach while wearing sunglasses once. I was constantly wondering why they had no menu, I guessed the monitor right there must be broken. But it was all just the sunglasses, the monitor had the offerings all along...
I think it is. Something to do with the light reflecting off the water changes the polarization. It's kind of what she's showing with the 3 filters. Kind of....
As David points out, when light reflects of a surface at a shallow angle it becomes polarised at a certain angle. Using a polarisation filter helps block this reflected light,and therefore decreases the glare.
I put on a murder mystery puzzle hunt for Halloween. One of the puzzles involved a computer monitor that had its surface polarizer filter removed, making it appear like an empty white screen. I then had a pair of polarized sunglasses that had the lenses turned 45'. When participants wore the sunglasses they could suddenly see everything displayed on the monitor.
Diana, I think you're missing the hashtag #shorts in your video titles? At least that's what I've seen on similar videos (to be promoted better by youtube).
I wear polarising filters over my glasses when I drive (for glare reduction - because the photo-chromic lenses don't change colour inside a car; the windscreen glass blocks the UV frequency they trigger from).
Was an issue for seeing screens and some dash displays. Oakley prism polorized glasses are a 45° angle filter, so not an issue with them. Another issue with regular horizontal or vertical are some window tints.
This is so cool! I saw a rainbow in the sky thru my sunglasses the other day, but when I took off the sunglasses, I could hardly see the rainbow at all. Polarized sunglasses r cool af
I got a set of these polarized sheets for Christmas a couple years ago. I already knew about the 3-sheet experiment, but now I’m going to spend the evening looking at plastic spoons
I'm a Photography student, and throughout my Programme, nobody else told me about this. Now, our course touched upon some Filmmaking for a Month. So we had a Director visit us and showed this to us. Out of all the photographers we were taught by, the one who showed this to us was a Director. Life is unexpected indeed.
It might not have been covered in your photography course because most of the time you’re photographing unpolarized sources. The polarization trick only works when you start with a polarized light source like a computer screen. Polarizers are used in photography because sunlight filtered through the atmosphere is partially polarized (I think I remember about 30%), which is why two perpendicular polarizers will darken a sky slightly and make it look bluer-but won’t ever Block the light. Same thing with sunlight glare and reflections-sunlight will partially polarize when it bounces off water or other shiny surface. But to do these tricks with polarizing sheets you need a completely polarized source.
Physics girl I knew it was you just by your voice I didn't even need to check I love the things that you do and you keep up the good work and you're an educator at its finest wish the rest of teachers of the world were as good as you.
I just got a set of polarized prescription glasses and they make everything fun to look at (or sometimes not for computer screens sometimes) and I find myself staring at the sky so much with them, they make the clouds so much deeper.
For anyone out there who wants to take pictures of things in water, use a polarising Lens or sheet to see-through through the top shiny part of water with a phone or camera
I once bought some polarized sheets and made mechanical transition lense sun glasses that you could change the angle between the 2 layers and change how much light could shine through. I tested it at 90 degrees and the sun turned into a blue dot.
Dude, I always wondered why the tint on my windows looks rainbow colored through my glasses, sometimes I can see rainbow colors in clouds that I can't see without glasses too, usually a couple hours after sunrise or before sunset.
Display something white on the computer screen (LCD, maybe other types too). Place your phone with the screen turned off so that you can see the computer screen reflected in it. Place a piece of transparent plastic, like plastic ruler, sticky tape etc. between the phone and the monitor so that you see the plastic's reflection over the monitor reflection in the phone. You will see strong colors but it won't darken the rest of the view.
I like how alot of people are just now founding out polarized sunglasses and what they can do. if you have been fishing your whole life than you would know this stuff already lol. fishing glass where the first sunglasses to only come out with polarized lenses. it helps us see down into the water better.
I've always been curious about the mantis shrimps eyes. If they use there polarizing eyes to target the weakest part of a shell or object it trying to open it? It probably would give a reason why they have so many visible receptors.
It’s an opaque sheet? So light shouldn’t go through? But then it’s also just a prism because of how other sheets react to one another’s movement of the light.
well, watching at your video (and giving thanks for show us your experiments) is about how the light works... some was saying that are frecuencies, anothers a wavelength.. but how does it cross over them could be a kind of polarization canceling when are crossed... is a point of view...
The three polarizer experiment is the first time I had ever seen quantum physics doing something that was counterintuitive to me. Light shouldn't get through it, dammit!
Wait, that was the FIRST counterintuitive thing you've seen quantum physics do? What did you start with?
@@israelRaizer The classic quantum experiments like the double slit experiment require lengthy explanations to show why the results were unexpected and they have nothing to do with real world experience. The results of the three polarizer experiment are immediately counterintuitive. You are putting a dark filter between two other dark filters and *more* light is getting through them now. Anyone will tell you that shouldn't be happening.
What does quantum physics has to do anything with the 3 polariser experiment?
@@scottlarson1548 you're just changing the angle of light again, I'm guessing if you put another filter in and change it back it'll be brighter again lol
@@slothymango The "angle" of light? Do you have any idea what a polarizer does?
I discovered this when I was wearing polarized sunglasses in the car on a sunny day, and found I couldn't see the radio display unless I tilted my head, not the best idea when you're driving 🙂
Samsung phones when you turn them sideways
@Seek Vapes When I drive my boss's BMW I can't see the on-window display with my polarized sunnies. I wonder if BMW should have thought of that too!
With 2 herniated disks in my neck spine, I do that about 20 times/minute while driving.
Yeah, I can't see well my Samsung display either in landscape mode. But I've just tried my wife's Motorola too, it's the same.
THIS!
Once thought my center unit was broken when wearing sunglasses while driving.
Didn't realize until I took them off when I arrived at work
"You've blinded me with science ". 😎
Thank you for your bravery in talking about things being so polarized.
Learning how 3 polarised films allows light through was the weirdest but coolest thing and what made me take the last year of my physics class serious
"That's some scien"
...of stresses in plas
The audio for this video was so weird. RUclips shouldn’t push shorts unless they’re actually going to function
@@thiccityd9773 everyone still understood it, so who cares
😎
@@facts9144 everyone still und...
Physics girl has the most massive big science energy with her last sunglasses-eyebrow raise at the end
Before simulations for stress analysis, small parts, even a whole car engine would be made out of plastic and study for stress points this way. They used different plastic but the principal is the same.
Polarized sunglasses are the bane of my existence when I need to check my phone on a sunny day.
Funnily enough LCD manufacturers are usually savvy to this, often displays in cars will have polariser angles at the same direction as filters in polarised sunglasses, for some reason mobile phones haven't figured this out ... AMOLED displays don't seem to be as affected, some of them are polariser free.
@@Chlorate299Huh you made me think. Why would OLED displays need a polarizer at all? They emit their own light. I thought it was just a consequence of the way LCDs work.
@@6alecapristrudel For the same reason polarised sunglasses are a thing - light reflecting off a surface is polarised, so some OLED displays include a polariser to reduce reflections.
@@Chlorate299 To be fair, mobile phones have the problem of them being able to function both in portrait and landscape modes. So, no matter in which direction you set up its polarizer, someone's gonna complain xD
@@6alecapristrudel Uh.....Reflection and Glare still exist. lol
This is why pilots use non-polarized glasses; the computer screen effect causes cockpit instruments and radios to be unreadable.
I tried ordering food from a snack bar at the beach while wearing sunglasses once. I was constantly wondering why they had no menu, I guessed the monitor right there must be broken. But it was all just the sunglasses, the monitor had the offerings all along...
I don't know if it's the same physics, but if you're driving in heavy rain and put on polarized sunglasses, it suddenly becomes way easier to see.
I think it is. Something to do with the light reflecting off the water changes the polarization. It's kind of what she's showing with the 3 filters. Kind of....
As David points out, when light reflects of a surface at a shallow angle it becomes polarised at a certain angle. Using a polarisation filter helps block this reflected light,and therefore decreases the glare.
Yeah, what he said... 😂😂 Thank you for making it more understandable than I could.
I use this in my glass blowing whenever I make things out of clear that need to be absolutely stress free for safety reasons. Its a polariscope.
Good use of light in doing your best in this world. Wishing someone else knew what I discovered with polarized light.
My fave is to look at a puddle and do the head wobble , really shows how they block polarised light in real life 🤩
I put on a murder mystery puzzle hunt for Halloween. One of the puzzles involved a computer monitor that had its surface polarizer filter removed, making it appear like an empty white screen. I then had a pair of polarized sunglasses that had the lenses turned 45'. When participants wore the sunglasses they could suddenly see everything displayed on the monitor.
Yeah, that's also sometimes used for privacy filters or some people use them in offices. Idk how wise modifying a company computer would be though.
Diana, I think you're missing the hashtag #shorts in your video titles? At least that's what I've seen on similar videos (to be promoted better by youtube).
That's some science. You're some science ! Now we have more stuff to check out when we're bored. Thanks!
I wear polarising filters over my glasses when I drive (for glare reduction - because the photo-chromic lenses don't change colour inside a car; the windscreen glass blocks the UV frequency they trigger from).
I discovered I had polarized sunglasses when I tried to take horizontal pictures with my phone
Same, took me shockingly long to that figure out.
I learned how to fix my old lcd monitor by change it polarized screen a week ago.
it ain't as easy as I thought lol.
Stress in glass as well. We use it to inspect glass containers with high definition cameras and software at a manufacturing facility
Bruh I recognised your voice, I feel so proud lol you’re my fav physics person on the internet😛
I can't see my phone through my sunglasses if I turn it horizontal to take a picture. Super fun.
I had that issue with xiaomi. I do not have it with samsung
Same filter we (photographers) use on our cameras. Takes glare off most surfaces while adding contrast. So awesome.
Just like that video from you from 2018! The one where you explain polarisation by frantically waving around a piece of rope, loved that!
Intelligence and beauty. Keep crushing it PG!
This is so cool. I love Ray Ban sunglasses 😉
With polarized sunglasses you can also see the stress lines in car window glass.
Was an issue for seeing screens and some dash displays. Oakley prism polorized glasses are a 45° angle filter, so not an issue with them. Another issue with regular horizontal or vertical are some window tints.
Haha Bell’s Theorem snuck in
The gorgeous wink @ the end though me more Science and understanding than the one year I’ve spent in college trying to make sense of it.
That’s how I make sure my sunglasses are polarized.
Polarized sunglasses sets off a vertigo feeling within seconds, and migranes within a few minutes of wear. Hiss hissss.
This is so cool! I saw a rainbow in the sky thru my sunglasses the other day, but when I took off the sunglasses, I could hardly see the rainbow at all. Polarized sunglasses r cool af
My favorite part was the last second
I have a pair that make things look so cool they are great for fishing but you can see different colors it makes the world even prettier in some ways.
you can also see the stresses in car windows as well with polarized glasses
I got a set of these polarized sheets for Christmas a couple years ago. I already knew about the 3-sheet experiment, but now I’m going to spend the evening looking at plastic spoons
Been doing this since I was 14, it's basically how LCD monitors work, super old news if you were a STEM nerd growing up
This is life changing!!!!!!!!!!!!!
Being a fisherman I have several, they allow you to look trough the glare on the surface of the water.
I'm a Photography student, and throughout my Programme, nobody else told me about this. Now, our course touched upon some Filmmaking for a Month. So we had a Director visit us and showed this to us. Out of all the photographers we were taught by, the one who showed this to us was a Director.
Life is unexpected indeed.
It might not have been covered in your photography course because most of the time you’re photographing unpolarized sources. The polarization trick only works when you start with a polarized light source like a computer screen.
Polarizers are used in photography because sunlight filtered through the atmosphere is partially polarized (I think I remember about 30%), which is why two perpendicular polarizers will darken a sky slightly and make it look bluer-but won’t ever
Block the light. Same thing with sunlight glare and reflections-sunlight will partially polarize when it bounces off water or other shiny surface.
But to do these tricks with polarizing sheets you need a completely polarized source.
Nice presentation skill 💕💕
It took me so long to figure out why my phone was always going dim when I turn it sideways. It wasn't my phone
Physics girl I knew it was you just by your voice I didn't even need to check I love the things that you do and you keep up the good work and you're an educator at its finest wish the rest of teachers of the world were as good as you.
I just got a set of polarized prescription glasses and they make everything fun to look at (or sometimes not for computer screens sometimes) and I find myself staring at the sky so much with them, they make the clouds so much deeper.
if you look into water you are able to see deeper down
We use that polarized film in copy art photography to put over the lights. We then use the polarizing filter on the camera to control highlights.
“Will you merry me?! … I don’t have a ring 💍”
That’s something to actually learn
Computer and SmartPhone screens are usually circularly polarized.
You can also see stress in glass. Properly annealed glass will have few color bands, and those will be spread out.
I came for the end😂 I always liked her but then she got old lol but still cool
I forgot how easy was that stress checking
For anyone out there who wants to take pictures of things in water, use a polarising Lens or sheet to see-through through the top shiny part of water with a phone or camera
My favorite thing that’s polarized: rainbows.
I'd love to see a full episode explaining why the 3 polarised lenses allows light through it.
What is happening to youtube!?
So that's why I can't see my phone screen turned sideways when I have my sunglasses on.
I once bought some polarized sheets and made mechanical transition lense sun glasses that you could change the angle between the 2 layers and change how much light could shine through. I tested it at 90 degrees and the sun turned into a blue dot.
how did you get the saimon glasses?!!!
OT but your voice sounds SO good on this short
btw. love polarized glasses :D
I use a polarized sunglass to make sure the sunglasses I want to buy is polarized.
My transitions drivewear make it very tough to read credit card and atm machine screens without turning my head at funny angles.
This is why I can't look at my phone in landscape mode while wearing my sunglasses.
I have polarized sunglasses. They always point toward north pole.
The three layer polarized sheet that passes the light is fascinating. It is only explainable using quantum mechanics.
Wow you're so pretty 😍😍😍
Dude, I always wondered why the tint on my windows looks rainbow colored through my glasses, sometimes I can see rainbow colors in clouds that I can't see without glasses too, usually a couple hours after sunrise or before sunset.
This is so cool
We Miss You, Diana❤❤❤ PLEASE GET BETTER SOON ‼💝💝💝💝💝💝
Awesome!
Just imagine, if windshields were polarized one way and headlights the other. WE could have even brighter lights that wouldn't bother other drivers.
They give neat visuals from tempered glass as well.
Display something white on the computer screen (LCD, maybe other types too). Place your phone with the screen turned off so that you can see the computer screen reflected in it. Place a piece of transparent plastic, like plastic ruler, sticky tape etc. between the phone and the monitor so that you see the plastic's reflection over the monitor reflection in the phone. You will see strong colors but it won't darken the rest of the view.
I would watch a channel of just this lol
Most cool Girl in the World 🌍 "Physics girl". Love from India 🇮🇳😊
The three poloroid thing always blows my mind
Just bought some today
I like how alot of people are just now founding out polarized sunglasses and what they can do. if you have been fishing your whole life than you would know this stuff already lol. fishing glass where the first sunglasses to only come out with polarized lenses. it helps us see down into the water better.
so I want to do a incognito screen without having to remove the polarizer by just using polarizers externally
Works for audio cancelation too!
Are you putting the third sheet in front of, behind, or in the middle of the two other sheets?
Smart & Fine
I've always been curious about the mantis shrimps eyes. If they use there polarizing eyes to target the weakest part of a shell or object it trying to open it? It probably would give a reason why they have so many visible receptors.
This is why when I'm wearing my sunglasses inside, because they are also prescription, I often can't see view screens like for credit card checkout.
That’s not just science! It happens to be cool science! Thanks for sharing! #stayepic
Polarized sunglasses are a must on the trout stream it blocks the glare on the surface so you can see the fish below the surface.
It’s an opaque sheet? So light shouldn’t go through? But then it’s also just a prism because of how other sheets react to one another’s movement of the light.
Happens to my phone when I wear glasses
You can see this with your smart phone as well. Turn it landscape and it gets darker
OMG, you mean you've never seen a polaroid commercial for polarized sun glasses?
Also the reason that pilots need non-polarised glasses. The LCD screens can appear less visible or unreadable.
Bell's Theorem in action (the three sheets of polarised plastic demo)
Unfortunately my sunglasses are polarised such that I can't see the time and most screens anywhere.
People should standardize such stuff
Still have the biggest crush ever on Physics Girl 😍
well, watching at your video (and giving thanks for show us your experiments) is about how the light works... some was saying that are frecuencies, anothers a wavelength.. but how does it cross over them could be a kind of polarization canceling when are crossed... is a point of view...
Every tesla is pyschedelic under my glasses. They really pop out with their special glass
What an coincidence
I had a class on this subject today abt the polarized lenses😁
Amazing
0:10
That‘s crazy!