Unfortunately, my left side of my headphones don't work :(.
@ammarraza1956
4 жыл бұрын
And my right😂
@naurseakart1190
Жыл бұрын
@@ammarraza1956 due to overuse, I hear less by a factor
@NaveenKSomasundaram
11 жыл бұрын
That's brilliant. A not so intuitive phenomenon explained with such simplicity.
@TheBishopSSR
8 жыл бұрын
Great informative video. Was the sound for it polarized as well? My left ear is receiving one component only ;)
@haoli6628
2 жыл бұрын
The sound wave has two types: compress-wave(P-wave) and shear-wave(S-wave); P-Wave means medium particles oscillate along the propagating direction; S-wave represents particles oscillating perpendicular to the propagating direction. It seems that sound is "polarized", but we do not sense it: because we can only hear P-wave. (S-wave cannot travel through fluid, e.g. air, water, ...)
@dirm12
5 жыл бұрын
Finally a video that makes sense of this phenomenon, and doesn't just say 'it's another type of polarisation'.
@blue_name_warrior
5 жыл бұрын
my right ear give you thumb down,cause you don't treat him equally。
@annalenasegler
3 жыл бұрын
I love it! Explained in such an easy way!
@baraskparas
3 жыл бұрын
Great presentation. Informative and interesting. Some subtle humour appreciated! Thanks.
@itisonlyadream
10 жыл бұрын
Regarding the experiment with the mirror and 3-D glasses, that demonstration is misleading in my opinion and needs to be clarified. It's true that if the experiment is done with 3-D glasses that are circularly polarized, then the lens over the open eye will appear darker in the image reflected from the mirror than the lens over the closed eye. However, if linearly polarized 3-D glasses are used, then the lens over the closed eye will appear to be darker in the reflected image. I think he should have mentioned that in BOTH cases one eye will appear darker and the only way to distinguish the linearly polarized glasses from the circularly polarized glasses is to pay attention to which eye looks darker. In my opinion, people who have not done this experiment with both types of 3-D glasses will come away from this demonstration thinking that one lens will only look darker in the mirror if circularly polarized glasses are used and that is not true.
@OnTheAir
6 жыл бұрын
I particularly like the sliding white E cardboard wave to show 90 deg. phase shift. Well done!
@expchrist
8 жыл бұрын
Nice trick at 1:45. I assume that you put a circular polarizer in front of the camera to achieve that effect.
@yash1152
3 жыл бұрын
yeahhhahahahahaha that's amazing. it's always exciting for me to wonder and see how the effects observable to us can be transmitted to the camera (and by extension, to other corresponding devices too)
@pukaman2000
3 жыл бұрын
Still feel that circular polarization should be called spiral polarization.
@cchollands
8 ай бұрын
Your explanation, the model of sliding perpendicular E fields, and the demonstrations REALLY helped me understand. ChatGPT's explanation alone wasn't clear enough for me.
@MovieMongerHZ
11 жыл бұрын
cool. thanks for the explanation! the animation you had on your cell phone was more informative than the red ribbon in terms of explanation the vector sum. but there were a lot of other cool explanations in this video. especially the movie theater glasses.
@melody3741
Жыл бұрын
Bro you explained literally everything I wanted to know AND in a way that allows me to understand how to use them effectively. Thank you so much.
@ThisisKrishnakumar
9 жыл бұрын
Why do we need Circular polarization of light for Photoelastic study of Stresses?
@pameslinkoln
9 жыл бұрын
Stress causes circular polarization because it creates a different index of refraction (speed of light) along the axis of stress
@TheRodiscumbag
2 жыл бұрын
My left ear learnt a lot about circular polarisation. My right one, not so much.
@alba5580
Жыл бұрын
All my life, I have been taught that light is made of an electric field with a magnetic field (perpendicular to each other). But in this video it was explained that polarized linear light is made out of two perpendicular electric fields (that sum up to a vector in one direction), does it still have a magnetic field?
@musicalBurr
2 ай бұрын
Yes, this is news to me too. I may be getting this wrong, but didn't Maxwell (I think it was Maxwell?) deduce that an oscillating electric wave would induce the magnetic wave, which in turn induces the electric wave, ad infinitum, giving rise to what we understand to be light? Isn't that why we call it electro-magnetic radiation? Maybe there is ALSO a magnetic field oscillating along with these two perpendicular electric fields? ...and the fact that there are two electric fields perpendicular to each other is WHY we observe polarization? Am I even close in my guess here?
@joshuakellerman5896
9 жыл бұрын
Hi. Am I to understand that electromagnetic waves are not electromagnetic, but are electro-electric? Please clarify! Thanks.
@Unprotected1232
9 жыл бұрын
Light is an electromagnetic wave. Its just that the electric part of light is made of two components which on average makes up the direction of the polarised light. The reason why we ignore the magnetic part is because we know it's perpendicular to the vector sum of the electric part. Or so I assume based on this video.
@vaibhavsaxena231
11 жыл бұрын
That was one nice presentation !! Congrats for the good work !!!
@chris24hdez
10 жыл бұрын
1. Is a linear polarizer defined by the electric or magnetic field, and is it defined by what it transmits or what it blocks? (a green color filter looks pink, for example) 2. where can i find more elaboration about the physics of the circular filter itself? 3. What experiments can I do to correctly define the polarity of light (or the filter) that I have? Am I looking at a vertical electric field? Is the electric field that bounces off a plane perpendicular or parallel to the plane?
@sirguythe7th
7 жыл бұрын
1. Don't confuse a colour filter for a polarising filter. Colour filters work by absorbing a CERTAIN WAVELENGTH of light: if it absorbs blue and you shine white light through it, what you will see is the white light minus the blue light = red. Polarising filters slow down / attenuate light of ALL WAVELENGTHS: they just need to be travelling in a PLANE specific to the PLANE of the polarising filter 2. I'm sure you can find loads on the internet (sorry but google can answer that one) 3. a) He already answered this in the video b) The light has a net sum vector in a certain direction: but rotating the polarising filter you can see which direction that is c) Not sure what you mean by this.
@BirdyMac3g
5 жыл бұрын
simple explanation, great visual. u the man
@michelelustrino7530
9 жыл бұрын
Hi James, very nice video and interpretation. However I have some problem with your interpretation. You say that it is not correct to interpret the polarized light as a single linear direction of vibration. Rather, it should be interpreted as the resulting vector of two perpendicular electric fields. In your example, you show two waves orientated at 45 degrees on both sides of an imaginary N-S direction and the resulting polarized wave oriented N-S. Welll, if this is true, why we have a black field when putting two polarizers with perpendicular vibration planes? If it is as you way, we should not have light extintion. Cheers.
@dumbblonde95
8 жыл бұрын
+Michele Lustrino No single light component matches both polarizers, so they're blacked out. That's my interpretation at least!
@xkriolox
6 жыл бұрын
I'm intriguied by this. I said to my students that the wave that gets out of the polarizer filter is not the same that entered, is instead the resulting electric field oscilating in the filter chosen direction. When this oscilating electric field gets out with the intensity according to the malus's law it creates the corresponding magnetic field and the polarized light wave is "created".
@EricPotratzM
4 жыл бұрын
Right, the vector sum interpretation does not make sense. There loss of light from a polarizer, so both vector components are not being preserved in the polarized light. A better explanation for the third polarizer causing light to come through is that it's simply allowing the light to make a gradual rotational transition through the intermediate middle polarizer. Light is a wave and it is quite flexible.
@Singingmom320
3 жыл бұрын
Thanks for the comments - I only have a left ear and thought the video was a bust. Now I know I just need to hear it in stereo or without cans at all.
@geoablesd188
6 жыл бұрын
You're so weird I love it!! Keep the vids coming
@exoticpropulsion8175
9 ай бұрын
Most professional video lesson I have ever seen on polarization wave shape!
@GseichtsG
7 жыл бұрын
Your model of a wave is very good. The moment you switched it to the circular polarized wave was like boom and suddenly it made sense to me why the iPhone display did not turn black. It is because the circular polarized light always has an amplitude isn't it? I mean the function has no roots. Am I correct with this?
@anupamamandal6960
7 жыл бұрын
Nice Explanation.... wanted to know if Circularly and linearly polarized light both from the same source have equal intensity?
@Sam_Chintapalli
2 жыл бұрын
Woow ...... Just amazing...... ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️
@musicalBurr
2 ай бұрын
Great explanation, but I'm left with an important question! Given that circularly polarized lenses slow down different colors by different amounts (and presumably shift different colors by different amounts - affecting their hue), how do you (or do you need to?) compensate for this in the left and right channels of a color film projection that uses circularly polarized glasses to give us the stereo effect? I should know this, but apparently I do not! Looking forward to hearing more.
@rendermanpro
3 жыл бұрын
"My left ear....." - it was so interesting that I didn't even notice that is was shifted to the left. Someone look for a content and someone to find what's wrong.
@mibo747
2 жыл бұрын
IDEAL presentation!
@anj000
Жыл бұрын
0:57 this explanation is quite miss leading. This is know as Bell's Theorem. As far as our current understanding goes it is quantum effect that causes light passing though to change angle of polarization. There is great video by minutephysics and 3blue1Brown on KZitem.
@kishfoo
6 ай бұрын
I think that linear polarizers also block out a gradation of light up to a 45-degree angle. Light waves are not oriented horizontally and vertically, perpendicular to their direction of travel. If it were orientated in such a way, you would get light seepage when you spun your stack of polarizers around at different angles. And that's not all. They also block shear in a gradation up to a 45-degree angle as light travels omni directionally.
@rathanm4397
7 жыл бұрын
thought my headphones on the right got broken. .hhaha
@ruzzellcrowe9352
5 жыл бұрын
The Mantis Shrimp eyes... :o
@nowonmetube
10 ай бұрын
I'd not have thought of Dr. Cox explaining quantum physics to me in a magician (sleight of hand) style.
@SINGAPUR201191
3 ай бұрын
i know this video its old. and i really appreciate for the nice explanation about the subject. but it hurt me when you put the 3d colored glasses facing down the table. :( i hate scratches.
@kitekiev
13 күн бұрын
Sorry, i didnt understand. So, is it possible to buy circulate polarised films?
@manideepreddyenugala4097
3 жыл бұрын
Any advice before watching 👀,looks like I need one...
@joshkarlowicz8569
6 жыл бұрын
I can see all the newly created misconceptions in the comments
@omaratef1440
10 жыл бұрын
can any one tell me where i can buy sheets of the Circular Polarized like that was in the video ?
@ikemoon127
7 жыл бұрын
Very educational. Very interesting.
@sl2357
2 жыл бұрын
I don't follow how it proves we have orthogonal E-fields though the linear polariser?
@malcolmvanorder3307
3 жыл бұрын
For the love of god, if you have mono audio, take a little time and put the mono channel on both left and right. This is painful to listen to.
@fraudgaming8134
11 күн бұрын
What happens when unpolarised light is passed through a quarter wave plate??
@qtof1799
2 жыл бұрын
The connect the string analogy really helped me wrap my head around the vector motion, thanks!
@PinkeySuavo
5 ай бұрын
I still dont get it tbh. Light acting as a vector sum and electric field being 2D is abstract to me.
@JaeV-xs7vz
3 ай бұрын
great video. you managed to make such a confusing topic so much easier.
@andyzysraul
8 жыл бұрын
Wow, very impressive explanation.
@jameshuang7982
6 жыл бұрын
Thankyou so much for this very nice video first, for a long time i am looking for what is that at the 4:05 your right hand take down for the 3D glasses, I am really want to know where can buy that plastic (that looks no color one) , cause i am want to make the Circular Polarization. thankyou again !
@zeynepbetulkaya3645
Жыл бұрын
why nobody gave me this info until I'm 23
@lambda4931
2 жыл бұрын
Best explanation online! Thank you one million times
@albertmendoza8330
Жыл бұрын
Omg, they never update that classroom. lol
@SevenDeMagnus
5 жыл бұрын
So cool. Nature is weird and unintuitive, most of the time.
@justagirlchillinghere38
Жыл бұрын
Why does he sound like Patrick Bateman
@chetankumar3964
7 жыл бұрын
excellent demonstration you make to understand the polarization ..thanx
@jumpander
Жыл бұрын
My right ear enjoys this?
@Tadesan
6 жыл бұрын
So circular polarizers have a bandwidth? Dang, just when you thought things might be simple... Thanks!
@jasonselph6968
Жыл бұрын
As you are clearly the Chevy Chase of science, I hope you begin to include complimentary pratfalls in each video...thank you in advance...(and excellent video)
@MexterO123
8 жыл бұрын
So I'm guessing then the linearly polarized doesn't have a sense of rotation?
@silentjoe4745
3 жыл бұрын
I’ve come to realize that I’m not necessarily stupid, I’ve just had terrible teachers. Complex topics only seem like such because the people teaching them to me don’t fully grasp what they’re speaking of. Most proficient practitioners don’t become teachers. The key to intelligence is finding the right teachers. A good teacher makes a worlds difference.
@benni_crafter4931
2 жыл бұрын
very good explanation! but to nitpick a bit, i think we learned that the speed of light is actually always 300000 km/s but what actually slows down the light is how long it takes for the light to transmit the energy in an atom of the given substance. correct me if i am wrong, but isn't that what actually causes the "lower speed of light" in optical denser substances?
@mimArmand
3 жыл бұрын
Loved it! none of that quantum bullshit!!
@anaeem86
Жыл бұрын
Me likey the attitude......now thats ....COOL👍
@johnmiwa6256
Жыл бұрын
First time I heard that a photon has two electric fields.
@shougaijamchinglemba9580
Жыл бұрын
very helpful thanks
@deepakk3434
6 жыл бұрын
His expressions are more suitable for a hollywood actor than explaining polarization. Very irritating facial expressions.
@roopikas2647
4 жыл бұрын
If u teach Physics like this...I would have left my dream of becoming a doctor long ago
@tombowen8091
Жыл бұрын
brilliant , and no poo music , well done that man
@maskedmarvyl4774
2 жыл бұрын
I wish this video was twice as long and had gone into twice as much detail about circular polarization and how exactly one of the light components is slowed down by a quarter phase. But I appreciate the explanation.
@jjhhandk3974
2 жыл бұрын
Now wait a minute, you lost me when you rotated the third filter and more light came through. In fact, that seems downright counterintuitive.
@bediha
2 ай бұрын
yep. it is counter intuitve because it can be explained only with quantum mechanics, not classically.
@vishipsherrah
Жыл бұрын
Wish my left hemisphere could hear that too
@kazutokirigaya2889
3 жыл бұрын
his face reminds me a bit that of Bill Nye
@noobtextwritergamer
4 ай бұрын
i like the video how he asks question how we r sure than shows it. Making it a perfect blend of curiosity followed by solution
@s.a.r.junior
3 жыл бұрын
The Mantis Shrimp brought me here
@johnnewman3221
Жыл бұрын
is there a polarized ink, how is it made
@edis9493
3 жыл бұрын
How does a polarizer rotate the circularization and allow us to observe this change in real-time?
@ramkishorsah8554
7 жыл бұрын
Thanks buddy for ur nice explanation with ur demonstration 👍👍👍keep it up
@xkriolox
6 жыл бұрын
I didn't understand the mirror trick. Why is one of the lenses black in the mirror and the other one black when he turns to the camera?
@akinoz
7 ай бұрын
This would be one of best explanations ever. Thanks professor.
@abhishekmusic90
6 жыл бұрын
Is it work on normal screen ? If is this so please upload it
@naurseakart1190
Жыл бұрын
Finally, got every single of my doubts cleared.
@4DRC_
6 жыл бұрын
There are x and y components of the e field but are there also x and y components of the b field, it's net force perpendicular to the e field's net force?
@NOTaYOUTUBERRR
2 ай бұрын
nice
@r0b0bert
4 жыл бұрын
This guy a magician or a physicist?
@0Bato
4 жыл бұрын
The sound is only to the gauche its very asmr thanks you very fascinating
@connorfitz-d6852
5 жыл бұрын
Great... Thanks KZitem now light confuses me!
@nwizg523
2 жыл бұрын
Need more explanation on this
@onafehts
3 ай бұрын
What is Hysics and why u say that I clap it?
@KISHORENEDUMARAN
3 жыл бұрын
cool video
@kakhatsikaradze4772
Жыл бұрын
01:32 American Physicist
@muniswamy100
2 жыл бұрын
WoW, Saved a Ton of reading with this brilliant video
@lironsifado
Жыл бұрын
you changed my life
@azeemimtiaz4547
2 жыл бұрын
super easy explaination
@DanTran-if2jt
4 жыл бұрын
Hi can anyone explain to me what happened to the magnetic field?
@FlorenciaCSalas
Жыл бұрын
Amazing !!! Thankss
@saeedanwar1328
3 жыл бұрын
Main difference between linear and circular polarization
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