I have a Sony Bravia 4K 3D tv that makes use of this. You can have 2 people wearing polarizing glasses and have each person viewing a different video while looking at the same screen. Great for fps gaming when you want to sit next to your friend but don't want anyone spying on your screen. I never knew how it worked but now I do.
Yes, but also, everyone’s brain changes all the time. We depend on its ability to change to do all kinds of things, like store new information and develop “muscle memory”. If a brain stopped changing, that would be cause for concern. :-/
This just might be THEE coolest demonstration I've yet to see on this channel. I think all of your demonstrations of how light works are the best ones because of how confusing and difficult it is to study the properties of color and light. There isn't a better demonstration out there that will show how horizontal and vertical light works.
When dad walks in the room Dad : "Why are you watching or staring at this bright white colour computer screen?" Me : "Dont disturb me dad Im doing something!"
"And this should be weird to you" I love it when you introduce a concept that is counterintuitive and walk us through why it's that way, but more than that I love the particular word choice "this should be weird to you," it's great.
I've always had trouble getting my head around the polarisation of light effect you show in the first half of this video - but then at 2:37 you made it finally click for me! The light *doesn't* 'go through' the filter (even though effectively it does, and we refer to it that way), it is _absorbed_ by the filter and then _emitted_ from the other side. Score a science win for the Action Lab! :-)
TL DR *Polarisation* Will watch to full asap. 0:48 Showing newbie polarization without technical term. 5:59 Then it also *not head tilt friendly.* 6:18 *Tiger Production*
@@hqcart1 oled screens - each pixel has a light source instead of a single back lit panel which is always on. So technically black area is actually turned off pixels instead of blocked light
Dude! I knew about this thingy when i was about 12 years old.... There were some guys talking about that part of the screen to be planted in glasses.. So that you could do your own job without being seen... You gave it life to it..... I WANT MY PHONE TO BE LIKE DAT
if you're talking about the signs, see above. If you're talking about the neon dyes that are in neon clothing, it's because they reflect the invisible UV rays into the visible spectrum.
ACAB\\ Mela BAKAta yeah these are called fluorescent dye’s, they use fluorescence in order to make colours look brighter by absorbing UV rays and re-emitting them as light instantly, making it look brighter
You should see what polarized light waves REALLY look like. It's far cooler than just perpendicular waves. I saw it once in a condensate experiment, and it blew my mind.
@Sean Leith There is light polarised in lots of different directions, not just vertical and horizontal. The video doesn't explain it great tho. also 3blue1brown and minute physics did some videos that explain the weird 3rd filter thing.
I think IMAX, and maybe some other 3D movie theaters, might have the polarization in each lens of their 3D glasses oriented 90 degrees from each other, so they can project both polarizations on to the screen, but each side blocks about half. Also, I have heard about taking the polarizer off of a display and causing you to see only a white screen a couple of years ago. It's pretty cool to actually see it - and I'm not counting those commercials about that one brand of sunglasses!
From the beginning of the video, it's not clear to me, are all possible polarizations of light linear combinations of vertically and horizontally polarized light? I expect there is nothing special about the horizontal or vertical orientations, and those are just used as basis vectors, for example you could also have the polarity along diagonals. Am i understanding this correctly? Also, It's unclear to me how a rotating polarization would come about from combining vertical or horizontally polarized light.
Yes, basically linearly polarized light is in a superposition of right and left circularly polarized light and circularly polarized light is in a superposition of linearly polarized light.
I love your vids! They are so fun to watch, and thanks for not being one of those types of utubers that say every scientific word there is, instead you make it easy to understand! Thx for inspiring me with all this science 😊💕
Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. The word science comes from the Latin word 'scientia', meaning “knowledge”. A branch of knowledge or study dealing with a body of facts or truths systematically arranged and showing the operation of general laws: the mathematical sciences. systematic knowledge of the physical or material world gained through observation and experimentation. any of the branches of natural or physical science. Science is a methodology for increasing understanding. So, if your purpose is to increase your understanding, Science may be useful. It is not the only way to increase understanding, but it has the useful property that it can be used to predict the future as well as explain the past. Keep going bro! You're the best!
In TN and VA displays you actually need to apply voltage to the liquid crystals to block light, and in IPS displays it is reversed, you have to apply voltage to let light through.
I tried it using a calculator screen and it worked 😊 I taped a polariser to a flash light so you can only see the calculator screen when the flashlight is on
Kind of a good demonstration of how inefficient LCD displays actually are. So much of the emitted light is just getting blocked and absorbed by the polarizer. At least in theory, OLED displays do not need a polarizer, although in practice many of them still have one to reduce reflections.
I feel like this could be the future of VR, if you had those glasses in a room full of blank lcd screens you could put yourself anywhere in the world like a hologram deck or something. Thanks for the video
This is Linus’ video from 2 years ago but the only change is that you make it sound super smart. These are all just basic facts said in a smarter looking way.
I am a new subscriber from April and Davey's Channel, can't wait to watch your vlogs and videos and get to know you and learn about science through your vlogs/videos
Daaaang, that is some awesome stuff! I always wondered how monitors and screens worked, thanks for the cool info! I always enjoy seeing your content.^^
I knew how to make these, but the way he explained how and why it works, is the real deal. Doing something that u know has its own taste....Great work!!
Lit me tell you...I love how you say: "Lit", when you are trying to say "Let". I'm also glad that we live in a country that lits me tell you that. However, lit me know if I have offended you.
cs188creations if we have to take a shot when he says "this" and "like this" does that mean we must take 2 shots when he says "like this" because he says "this" in it
I never really thought of the light being absorbed, and then re-emitted. Explaining it like this makes a bit more sense to me. I always assumed the light was either absorbed, and transformed to heat, or allowed to simply pass through, rather than being re-emitted.
@help. My favorite thing to do is to actually be the first one on videos and NOT say first. Instead, i'll usually opt for "Nice" because i love seeing people get butthurt when the first comment doesn't even say First
"Light that does this and light that does this", so scientific.
Too much light information
@@drinkmilk380 that was heavy info to take in
@@timno9804 r/woooosh
@@timno9804, its a goddamn joke
@@timno9804 the funny thing is, scientists don't refer to water as dihydrogen monoxide
*Laughing at a white screen*
"Mom comes in" : what happend to my son??
Mom: Video games
@@GCKteamKrispyyep it's videogame
Mom I'm using white board... And i just cleared the screen
Yes not watching anything else.
Mhm
He's ascended above us a long time ago.
Holy mindblow! Super fascinating! Thank you for enlightening us. Science!!!!
Jesus Christ did i see u in Kurzgesagt?
I have a Sony Bravia 4K 3D tv that makes use of this. You can have 2 people wearing polarizing glasses and have each person viewing a different video while looking at the same screen.
Great for fps gaming when you want to sit next to your friend but don't want anyone spying on your screen. I never knew how it worked but now I do.
what type of tv pls tell me i wana watch '''it''''
But you can cheat by turning your head sideways :P
that isn;t how it works is it?
Only if the glasses are turned in 90⁰
@Takahashi Shimo Mo no
Ever since i watch your videos, my brain is heavier than my head.
How much ounce did it gain? 😷
Yup
Yes, but also, everyone’s brain changes all the time. We depend on its ability to change to do all kinds of things, like store new information and develop “muscle memory”. If a brain stopped changing, that would be cause for concern. :-/
Riskteven Brain tissue does :)
@@Riskteven dont be a smartass and just go with the joke for heavens sake
Real life incognito mode
😂
Noice
LOL that's was funny
Gimme some
1 year ago? Not yet 1k likes?
This just might be THEE coolest demonstration I've yet to see on this channel. I think all of your demonstrations of how light works are the best ones because of how confusing and difficult it is to study the properties of color and light. There isn't a better demonstration out there that will show how horizontal and vertical light works.
WOW! l have seen the light! love it!
Mom I'll need a bike,tell dad to get one pls.
Tomorow at the News: 200 5 years old destroyed their monitor xD
Toxic Tonic what
Pretty well today is the era of LED Monitors and not "LCDs"
@@sarielreigns777 they also use it
Sigh, ignorants. Led is a light source for a screen and if you dont have an *oled chances are is that it is an LCD.
200 likes what type of shit is this😵
6:09 OMG SOMEONE PLEASE MAKE A MEME OUT OF THIS🤣🤣🤣🤣
When dad walks in the room
Dad : "Why are you watching or staring at this bright white colour computer screen?"
Me : "Dont disturb me dad Im doing something!"
I have a meme but I am lazy to type it😬
6:12 actually
609
Good format potential
Technically the video should be named. "Seeing half the amount of light everyone else can see"
Underrated comment.
"And this should be weird to you"
I love it when you introduce a concept that is counterintuitive and walk us through why it's that way, but more than that I love the particular word choice "this should be weird to you," it's great.
I've always had trouble getting my head around the polarisation of light effect you show in the first half of this video - but then at 2:37 you made it finally click for me! The light *doesn't* 'go through' the filter (even though effectively it does, and we refer to it that way), it is _absorbed_ by the filter and then _emitted_ from the other side. Score a science win for the Action Lab! :-)
Next video: *Finding out if circles have corners*
Jojo reference
Ah! A cultured BKFC fan!
Yeah right, cat videos...
cat/pussy
Dirty mind😂😂
Pornhub*
OMG I THOUGHT THAT, LMFAO
Yeah i can watch some kittys on you......😂😂😂😂
TL DR
*Polarisation*
Will watch to full asap.
0:48 Showing newbie polarization without technical term.
5:59 Then it also *not head tilt friendly.*
6:18 *Tiger Production*
As I always say, the most legit Science Channel on Yt..
"So now you can watch cat videos all day at work if you want"
Family friendly content :)
Emphasis on "cat"
Boss: Is staring at the blank screen the best use of your time here at this company? See me in my office in 15 minutes.
@@purpl3grape 😂😂😂😂
Yea.. Cats.. 😅🤣🤣
family friendly and not safe for work at the same time
Imagine using devices at public places like this.
Ajay kandhari I tried to wipe away your profile thinking it was hair! 😂😂😂
@@JacsSacs me too haha
I though you profile Pic was hair... That is awesome... I feel dumb now
AngelitoCO me too! 😂
Me too!
What about shining the brightest flashlight or the 5W laser through polarizers?
Sounds good :3
We could make a religion out of this
I remember seeing this a done a few years ago. I'm glad that your doing these experiments teaching people new things. Good job!
mwalsher He didn’t literally mean it was a new thing, it’s just new to the people who haven’t learned about it.
@@XodiasRX Thank you! At least you understood what I mean.
You: Now you can watch cat videos at work
Boss: Um... sir, why are you laughing at a white screen?
Does this mean that BLACK SCREEN SAVERS do not really save any electricity???????????????
Correct
@Kronocide OLED does not always emit light?
@@hqcart1 oled screens - each pixel has a light source instead of a single back lit panel which is always on. So technically black area is actually turned off pixels instead of blocked light
I believe The original purpose of a screen savers was to prevent burn-in.
hq cart depends on the screen type, if your screen is lcd so no, no power saving, watch android authority's lcd vs led vid
Dude! I knew about this thingy when i was about 12 years old.... There were some guys talking about that part of the screen to be planted in glasses.. So that you could do your own job without being seen... You gave it life to it..... I WANT MY PHONE TO BE LIKE DAT
Can you explain why neon colors seem to glow
buzz runner isn’t it because there’s gas inside with electricity running through it.
if you're talking about the signs, see above. If you're talking about the neon dyes that are in neon clothing, it's because they reflect the invisible UV rays into the visible spectrum.
ACAB\\ Mela BAKAta yeah these are called fluorescent dye’s, they use fluorescence in order to make colours look brighter by absorbing UV rays and re-emitting them as light instantly, making it look brighter
Just Wow!
The explanation was just amazing! 👍🏻
The best thing about your videos is they always deliver what they say in their title!
No click baits! 😃
Spy glass in action lab worth destroying a monitor.
40 years later your grandson looking at the white display
And you should warn him that his dad too know that
@Lucas Røygaard
Really?! Thank you man !
Make a spy glasses for your self and then secretly go into his room and you can also know
Wow!!! How cool is that!!!
שלום רפאל, נחמד לראות אדם יהודי בתגובות
Actually the monitor still produces heat. So it's not really that cool.
Holy cow!
Very nice way of describing polarisation for all to understand.
5:53
I feel like you could you do good dope puzzle room out of this
This is like having earphones, but for your eyes, "eyephones".
Hmm...now I can watch "it" without getting caught! 😛😂
Tharki
@@thatfuckerwhossleepy2696 but to what is his point
By it, do you mean action lab videos? XD
@@Elite_Kamayuk he means pron with the r and o switched
what if some is at the back watching the monitor through my glasses at an angle.
You should see what polarized light waves REALLY look like. It's far cooler than just perpendicular waves. I saw it once in a condensate experiment, and it blew my mind.
The next day at work:
Boss "Why are you destroying company property?"
Me "It's OK, The Action Lab said I could do this..."
That is cool. First time I've been genuinely impressed in a long time.
Just imagining me doing this at home and my parents calling physiatrists
How light even know which direction is vertical? It knows gravity? It doesn't make sense.
@Sean Leith
There is light polarised in lots of different directions, not just vertical and horizontal. The video doesn't explain it great tho.
also 3blue1brown and minute physics did some videos that explain the weird 3rd filter thing.
@@d.l.7416 Thanks. You are right.
I have been using polarizer filters for my photography, and now I fully understand how it works. Great video!
Now we can all watch 'it' without getting caught.
😂😂
Nice original comment
Kinky
THE EMOJI MOVIE? IT THAT 'IT'
You are everywhere for me
I got a question, does this affect the image quality and resolution in any way?
Yes
THIS IS GREAT FOR PRONHU..... HOMEWORK
Drinipro it’s pronhop
Adrian Suriel No its pringle
Lol
Oh damn. The prongo lovers😂
Legitimately the coolest thing I’ve seen all year!
“Light that does this and light that does this”
lmao
I am glad you picked up on my comments about Quantumness of things!
*Have a good day!*
I think IMAX, and maybe some other 3D movie theaters, might have the polarization in each lens of their 3D glasses oriented 90 degrees from each other, so they can project both polarizations on to the screen, but each side blocks about half.
Also, I have heard about taking the polarizer off of a display and causing you to see only a white screen a couple of years ago. It's pretty cool to actually see it - and I'm not counting those commercials about that one brand of sunglasses!
You look awesome in that spy glasses!!
I’m glad someone got it right. Simplicity is the answer
This is actually so cool!
This video is so underrated! This is the coolest thing I’ve seen in along time!
I heard the three polarizers paradox is called “Bell’s theorem”
Brilliantly explained man.. you are genius to Novice school students learning Physics.
You should go and teach the physics
From the beginning of the video, it's not clear to me, are all possible polarizations of light linear combinations of vertically and horizontally polarized light? I expect there is nothing special about the horizontal or vertical orientations, and those are just used as basis vectors, for example you could also have the polarity along diagonals. Am i understanding this correctly? Also, It's unclear to me how a rotating polarization would come about from combining vertical or horizontally polarized light.
Circular polarization is created by combining a source of EM radiation with a 90 degree phase shifted version of itself.
Yes, basically linearly polarized light is in a superposition of right and left circularly polarized light and circularly polarized light is in a superposition of linearly polarized light.
@@TheActionLab thanks. that makes sense.
@@kenlogsdon7095 What you said isn't complete. The two polarizations have to be at 90 degrees to each other, as well as phase shifted by 90 degrees.
@@DANGJOS - Yes, you're right, of course. Doesn't work very well otherwise, LOL!
I love your vids! They are so fun to watch, and thanks for not being one of those types of utubers that say every scientific word there is, instead you make it easy to understand! Thx for inspiring me with all this science 😊💕
I saw this like 5 years ago lol
Same
I saw this 0 seconds ago
Oh thank god I thought I was going crazy
Back then, I almost did this to my monitor, but I don't have much money to get another one lol
Deja vu
Scotch Invisible Tape holding the filters on your glasses is a magnificent touch
If blocks all light, why isn't "blackest" black?
What happens if you put polarizes on top of the flash?
Not all of the light you see is passing through the filter.
coz some light escapes due to reflection (I guess)
Because black reflects light from surroundings
My thoughts were because of the circular light that may be passing through
@@paradox9265 well, thats a good idea, but he said it can only be compose of two lights patterns. Either of three.
Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. The word science comes from the Latin word 'scientia', meaning “knowledge”. A branch of knowledge or study dealing with a body of facts or truths systematically arranged and showing the operation of general laws: the mathematical sciences. systematic knowledge of the physical or material world gained through observation and experimentation. any of the branches of natural or physical science. Science is a methodology for increasing understanding. So, if your purpose is to increase your understanding, Science may be useful. It is not the only way to increase understanding, but it has the useful property that it can be used to predict the future as well as explain the past. Keep going bro! You're the best!
I did it with my old desktop. It worked.
One of the most mind blowing videos you have ever made!
Nice keyboard btw
6:15 or something els...
Haha idd
lol
Yikes
Porn
This, is one of the best videos I've watched recently!
The physics you display always interests me. I continue to want to watch again. Thanks
In TN and VA displays you actually need to apply voltage to the liquid crystals to block light, and in IPS displays it is reversed, you have to apply voltage to let light through.
Yes, but what happen if you tilt your head while you have the "spy glasses"? :)
I tried it using a calculator screen and it worked 😊
I taped a polariser to a flash light so you can only see the calculator screen when the flashlight is on
Nice gaming keyboard.
What I like about you is that you don't take 2 weeks to upload a video so keep it up
ok i like this, even you make video like this. and i will try like this.
Kind of a good demonstration of how inefficient LCD displays actually are. So much of the emitted light is just getting blocked and absorbed by the polarizer. At least in theory, OLED displays do not need a polarizer, although in practice many of them still have one to reduce reflections.
First, Love you bro please make more videos.like this one 👍👍💋
What's the second part of the message? Because you're not even close to first comment.
@@TheFutureCreator Makes perfect sense
Indian?
@@breakingbad3282 maybe
He is an indian
Never fail to impress me with your new science videos. Thank you ActionLab 👍
I feel like this could be the future of VR, if you had those glasses in a room full of blank lcd screens you could put yourself anywhere in the world like a hologram deck or something. Thanks for the video
This is Linus’ video from 2 years ago but the only change is that you make it sound super smart. These are all just basic facts said in a smarter looking way.
Okay, this is epic
That glasses idea would be a great idea for alot of different things...
Is this the type of glasses Roddy Piper wore in the movie "They Live?" 🕶️👓
Was thinking the same
This is the youtube channel that we all need but we don't deserve
Watched so early that it was private😂
Nani
Omayva mou shinderu
3:26 Helpful diagonal polarizer.
_Jack O'Lantern, is that you the light in the end of the tunnel?_
I am a new subscriber from April and Davey's Channel, can't wait to watch your vlogs and videos and get to know you and learn about science through your vlogs/videos
Yay
Yay!
edit comment to 1st cuz you are indeed first
Lol wattt
Daaaang, that is some awesome stuff! I always wondered how monitors and screens worked, thanks for the cool info! I always enjoy seeing your content.^^
Awesome
I knew how to make these, but the way he explained how and why it works, is the real deal. Doing something that u know has its own taste....Great work!!
I got polarizer from an old calculator screen but it is not enough for making glasses
You can literally buy polarized sunglasses at any gas station or like Walmart. Or just keep the ones from a 3D movie.
already have 3 monitors I've done this to last year, it's very neat and all my friends are amazed by it
Lit me tell you...I love how you say: "Lit", when you are trying to say "Let". I'm also glad that we live in a country that lits me tell you that. However, lit me know if I have offended you.
Green Man thats the way he speaks
Go pway maincwaft
I always wonder if he is saying lit when talking about light to be punny.
Learning that was the coolest thing. Thank you action lab 👍
Zabardast !!📣👍👍
Could you please make a video talking about how OLED displays work? I have always been curious...thanks!
*_If u were my Science teacher , i would've been a God_*
I don't see how science would have helped you, Pain... 🤨😂
Awesome!.... It is weird to think that light can be twisted regardless the distance of the polarisers. Something quantum is going on there.
New drinking game: Take a shot every time he says "this" or "like this". 😆
Or blinks
Or breathes
O
Or changes sense
cs188creations if we have to take a shot when he says "this" and "like this" does that mean we must take 2 shots when he says "like this" because he says "this" in it
I never really thought of the light being absorbed, and then re-emitted.
Explaining it like this makes a bit more sense to me.
I always assumed the light was either absorbed, and transformed to heat, or allowed to simply pass through, rather than being re-emitted.
First comment. I love the action lab!
You're 9th comment actually
@help. Yes i do. Just to ruin people's days because the whole "First" thing is stupid.
@help. My favorite thing to do is to actually be the first one on videos and NOT say first. Instead, i'll usually opt for "Nice" because i love seeing people get butthurt when the first comment doesn't even say First
@help. NNNiiiiiCCCeeeRRRRuuuu
What a long conversation
This was actually very nice to learn. I had no idea. Thx!
is it just me or does he say this a lot
One of my favourite channels. I learn all kinds of crazy stuff!