Polarization of light, linear and circular | Light waves | Physics | Khan Academy

This is the underlying physics behind 3D glasses. Created by David SantoPietro.
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[@dumitruene8883]

That drawing of the perpendicular magnetic fields was amazing.

[@Cosmuex]

I came to the comments to see if anyone else felt that way. I was amazed

[@shreenidhhi8633]

ikr, it was so satisfying for some reason

[@moizmansoorally1450]

Yh why aren't more people talking about it

[@Marius1708]

I even tried it myself because it felt so easy and satisfying

[@monkcherry4497]

@@Marius1708 what soft ware is it

[@antonpolishch]

4:52"...sun is shining and it is a beauuuutifullll day")))) here, at my computer I feel your enthusiasm

[@yxxx2790]

i don’t even take physics but came across the concept of polarization and was intrigued by it and decided to search some videos up. u did a great job at explaining it even for a non physics student. great job!!

[@racheli4365]

Just tried to understand this for about an hour, but you made this perfectly clear in less than 4 minutes. Thanks!

[@thepinkcodon]

I've never experienced a better explanation of polarization. Thanks a ton! This is gold :P Also, I loved the movie theater example.

[@Wayk123]

2:20 "This thing's hot!" I laughed way too hard.

[@yoshicat123]

Thank you for explaining. I'm a masters student and I feel like I understand polarization more than I ever have before lol

[@joewang4962]

Not until u know about the Poincare sphere(corresponds to the Bloch sphere in quantum information science! ) and the rigorous definition of polarization😏

[@paulchen355]

@@joewang4962 bro, I just need to pass the class. LMAO

[@kaden9572]

Man, been reading a textbook for a week and couldn't grasp this... Your drawings REALLY came in handy, THANK YOU

[@April-nj8th]

Loved it it feels so good to just know stuff without te pressure of having to mug it up and write it for tests....this feels the right way of studying

[@outdothyself5745]

After doing a lot of survey , i finally got something actually qualitative and worthy . Thanks 👍👍

[@shekharsrivastava5535]

U explained really v well, u r definitely a very good teacher.

[@socialreveluv5428]

Thank you for all the examples and explanations. It was really helpful that you always questioned "why are we doing this?" and answered it right away, phenomenal.

[@mazzinez.f.6071]

As an IB student struggling in HL physics, this helps so much. Definitely going to do Kahn with IB to help me through.

[@PatchiooInc]

damn i am doing the same for HL Physics lol

[@seamusfing]

this explanation was incredible! thank you so much for taking your time making this video

[@Stringfellow-xo6do]

Wow, I've been trying to find a way of explaining Polarisation regarding fibre optic transmission and multiplexing and this has helped massively.

[@robrigole1402]

Easiest explanation to understand out of all the many textbooks I have read. Thanks!

[@elizabethelizabethhh]

this was an excellent explanation thank you so much!! feeling happy i understand what polarisation is now!

[@xinyiwang9461]

That helps a lot! Thank you so much! Your explanation was so clear.

[@gailbarlow8958]

Brilliant! At last someone has got it through to my brain....... struggled with this for AGES. Thank you very much.

[@Introvertrains]

I came here for a visual understanding of an RCP wave Really satisfying Thanks

[@ashar4121]

This is more exciting than I thought. Great explanation!

[@bronagab9181]

Fantastic explanation. Both, colloquially and with your drawing skills. Thank you!

[@benbruno8471]

thanks! great video. Really helped me understand what is going on in CD experiments

[@navitajain2423]

Awesome ! Thanks Khan academy for making such brilliant videos.

[@challengepoker]

Excellent explanations ! Thanks !

[@sheriek4484]

Thank you for posting this - you are a most excellent teacher!!!

[@valvhin]

wow thanks dude ! thats what I needed to see

[@alirezafarhadizadeh5674]

That was superb, thank you very much for this movie and excellent explanation with simple graphics but hugely informative.

[@tumblevveed3586]

First time I experienced polarised glasses was actually on the lake fishing with my dad. The sun was out, and the glare off the lake was brutal. I was wondering how my dad was trolling the boat around the stumps in the a cove on the lake that I couldn’t hardly see. At one point he gave me his shades and bam, it was a huge difference. I didn’t get to keep them on long as he wanted them back so he could continue avoiding the tree stumps. Well, I got my first set of polarised shades at the tackle shop dad bought me and those new shades have been sitting at the bottom of that lake for 30 years now as when I bent over the boat to get a fish netted, they fell off.

[@Gretephoto]

Aw, great story!!

[@kubabooth6346]

Literally a saviour! Thank you for your clear and precise explanations

[@stalin4timetravel376]

When I was little I always noticed how if I tilted my head far enough the image in the 3D movie got all funky. Now I know why!

[@annyni6640]

I am so lost currently in my laser and photonics class and this definitely helped a lot

[@ledju]

Thanks I totally understood polarization now, it was so messy in my brain :)

[@musabmelhem7976]

such a beautiful explanation. thank you so much for your help!

[@k.zinhtut7668]

Can you also explain with equations? Like matrix calculations. Thanks a lot! :) Your video is awesome!

[@1.4142]

Didn't realize 3D glasses worked like that

[@radioactivesiddique6568]

best ever.....i'll share with my all classmates who are going through the same problem

[@torebektoregozhin5675]

It is the best explanation I ve ever heard and seen. Both informative and interesting

[@mahendrachozhan2739]

A Nice explanation. Thank you..

[@ashwinikumar5530]

Thanks for the video. Thank you sir.

[@haydenroams]

70 percent of people watching this video didn’t come here because of one quiz question in a class, they came here out of genuine curiosity about how the world works. These are the people you should be employing.

[@eikkaheikkinen]

great explanation.. even i understood ;D

[@alantomat4492]

man you saved my life. thank you bro

[@clearbrain]

beautiful explanation...thanks for sharing knowledge

[@krish2nasa]

Excellent explanation, thank you very much!

[@gauravnegi4312]

BEST EXPLANATION VIDEO, so simple and clear.

[@nalison3933]

such a good presentation thank you so much!!!

[@FeNniXX3]

Wow.. What an awesome explanation! Thank you.

[@csaa7659]

great presentation, appreciate it

[@littlemoreinformative4194]

first time i came to know what is polarization. great video

[@greasygoblin3541]

Great explanation! Very clear!

[@TheSamaa1997]

Thank you man! 😊

[@nurasarun]

Thank you for posting !

[@user-qf3ud4vs1e]

Thank you so much , I was so confused until I saw the video

[@alaska3333]

Excellent presentation. Easy to understand, my compliments.

[@SUPERSONIC88-]

No fantasy animation, just simply and easy to understand ,thanks

[@treasurearhewoh327]

OMG polarization simplified, thank you so much, 2021 anyone?

[@AoyamaIchome]

Amazing video on polarization, thank you so much !

[@Mic679]

Extremely informative. Thank u sir.

[@zaynabayman8904]

Thank you so much finally I understand what is polarization:)

[@VINCENTDARKLY]

Damn good explanation. Thanks.

[@jhinuksaha5071]

I can't thank you enough for making the concepts clear on polarization. I used CD spectrometry on proteinswithout completely understanding was circular polarization was and it was so disturbing. But now that I have a visual understanding my own experiments would make much more sense to me. This was awesome ! thanks a ton !

[@MdSalauddin-ur2vl]

Hellow

[@richiestaccordi]

Dude, this video is great, thanks!

[@husseinsaleh9166]

that was very educative, thank you. keep up the good work ❤

[@yurcchello]

simple but great explanation of circular polarization. that what i was looking for

[@saipavand4064]

I love Khan academy it clarify my every doubt 😍

[@dalethebelldiver7740]

Very good; now I want to know how this is accomplished.

[@rosariopereira8857]

Thanks, helped me a lot. Cleared a doubt

[@Aikisbest]

Aha, now I'm starting to understand how the 3d on the 3ds works. Looking at the 3ds screen with my polarized sunglasses and slowly rotating it produced the same "colour/brightness filter" as when doing the double/triple polarized lenses experiment that there are loads of video examples of here on YT. Amazing what one can learn with an accessory, some basic explanations, and a curious/investigative mindset. My day has been made!

[@Aikisbest]

EDIT: I feel like im missing something though...

[@AA-nh5wo]

wow...that's amazing, thanks

[@PichaelMoon]

thanks! helps so much!

[@apearson79]

This guy can explain in twenty minutes what takes my prof two hours 😂

[@samiramammadova4942]

thank you verey much it helped me ! great

[@indrashispowali]

lovely... thanks for such an amazing explanation!

[@kakunmaor]

Perfect! thanks!

[@sarujanrupan4831]

The cinema example was mind blowing thanks!

[@romanlastname4133]

That was beautiful.

[@devanshgandhi1276]

Amazing. Lovely video!

[@MradanshuDayal]

thank you sir the movie theatre example was soo good!!! I feel so glad that I know it now. thank you sir, I loved the explanation..

[@shamiliqbal2979]

This is awesome... I've been working with retarder material and this helps me understand the concept of polarisation even more. I on behalf of viewers from years 2024, Thank you very much.

[@SagaramM]

Thank you for such a lucid explanation.

[@jmcgarrahan1]

This was fantastic!

[@1987monzi]

great video, it helped!!

[@klchang]

謝謝你的影片

[@yichizhang795]

Great video!

[@srdoberman]

Most clear thanks for the glasses

[@penazonw7205]

Thank you for the very detailed explanation about polarization! I finally understand and can relate this to polarized sunglasses and 3D glasses that we commonly use!

[@Apollyon1111]

One question that I cannot find asked anywhere: Is there an ideal rotation of a circular polarizer camera lens? If so, could I find that point and mark the bezel and just turn it to that every time?

[@adarshpandey2354]

awesome thnx!!!!!

[@josefpolasek6666]

Amazingly explained! The visual part is absolutely crucial for a better understanding. Just 14 minutes and you did a great job. Thank you :)

[@Hkme89]

Amazing explanation. Thank you 🌹

[@MohdNadeem-zf4yu]

Keep it up sir please make more videos this is very important and useful for us

[@Spear8]

dude physics is everywhere !!

[@aromals2403]

great video... really helped me ....thanksss

[@mohammadreza1288]

this was great, thank you

[@fawazsyed7883]

Awesome explanation of light polarization!

[@albingreen344]

those are the gnarliest glasses ive ever seen

[@marcelinemoran5029]

I am watching you from iraq this was Amazing! Thank you so much ❤

[@alimirza6941]

Thanks a lot! Exams after 2 weeks!

[@gamingwithsinglevicky7458]

It helps me a lot thank you