Snell's laws proof using Huygen's principle | Wave optics | Physics | Khan Academy

[@levi4328]

I really wish these videos from khan academy india were integrated into KA's official physics course. They're so well done.

[@runzit2007]

Simple explanation with perfect animation

[@davidnath5664]

Yesss

[@naman4067]

Kihan sir's work

[@Sauravvv-k2x]

help me . if refracted waves travel slower how it cause bending of light

[@kumaraayush]

i love the way he teaches in his videos, with all the nessecary details and still not spoonfeeding. I request the viewers to actually pause the video when he instructs and try to solve what he says. If you are able to solve it gives you a whole new level of confidence and understanding

[@AtheistIndian2024]

Your voice is great which makes things easier to understand which is a great thing for me.

[@joeltrevor3257]

i guess Im randomly asking but does anyone know a trick to get back into an instagram account?? I stupidly forgot the password. I would appreciate any assistance you can offer me

[@brennanvivaan2290]

@Joel Trevor instablaster :)

[@joeltrevor3257]

@Brennan Vivaan Thanks so much for your reply. I got to the site on google and I'm trying it out now. I see it takes a while so I will reply here later with my results.

[@joeltrevor3257]

@Brennan Vivaan it did the trick and I finally got access to my account again. I'm so happy! Thank you so much you saved my account !

[@brennanvivaan2290]

@Joel Trevor you are welcome xD

[@mihreteabgirma6351]

Pshhhhhh... Love the way he repeats what he have said in the previous videos! This shows me that he wants to convey every single concept without prerequisite (Subscribe, watch the previous videos, like...) true legend! Thank you indian brother🤩

[@keerthanas4144]

why dont i have teachers like this in my school and college......... hes the first ever teacher who actually made me WANT do question...... kudos to him.

[@nuraliahizzati6438]

Thank you for the explanation. ive been watching many explanations about this from other youtube channel but still cannot fully understand because no animation was used. thank god i found this channel !!

[@anishaghosh101]

Why is it so hard to imagine a wavefront

[@soumyadipbanerjee6744]

Believe me, some of these things are actually very bizarre. I've spent a significant amount of my life trying to understand what a wavefront is 😂😂

[@anishaghosh101]

@@soumyadipbanerjee6744 right....

[@premium_56]

@@anishaghosh101 you should have a rural background to understand wavefronts

[@wahidjulfekar]

Particles in sync by vibrating at the same time with each other.... And the shape that appears if you look the thing from top veiw is basically the wave front.

[@ghostnotbedsheet]

It's pretty simple you just gotta see/imagine the waves carefully and you'll get the wavefront

[@jeyalilly3962]

Great work thanks for making me to understand this concept

[@kamlesht.j9366]

YOU ARE THE BEST PHYSICS TEACHER I'VE EVER GOT.. LOVE YOU SIR

[@PraptiPatro-tm8vu]

You are actually an excellent teacher .... Love you physics Thank you sir....

[@sanvi4358]

This is first KZbin channel in I understand the concept perfectly thank you sir ❤

[@sia5475]

Amazing way of explanation ❤️👍🏻

[@icarus3797]

Thanks a lot , Sir.

[@v4mptae]

this channel literally saved our lives. thank you so much!!!

[@soumyadipbanerjee6744]

Why don't they teach like this at schools ?😭😭

[@saminakhatoon7693]

Everything in this lesson is so much messy but it's animation and ur hard work had made magic ... an unbelievable magic ❤

[@bhawnajaswani2006]

Amazing ..hats off to you for this beautiful explaination 👏

[@priii1005]

I was struggling so much, THIS IS SUCH A GOOD LECTURE!!!!

[@arnabdas2416]

you teach exactly the way I want to learn Physics. Love you, sir. Wanna know more about you.

[@neondbd2079]

OMG THIS MADE ME undertand everything thank you

[@neondbd2079]

soo much

[@scycefahim1783]

Khan academy is revolutionary. Thanks guys

[@nishitamahanta2005]

Thank u verrrrrry much for this ❤❤

[@aishwaryab9974]

U teach awesome and the way u explain the concept makes bored topic intresting thank you so much

[@dhurbarajpuree2992]

Simply, perfection 💜

[@karinaburgess3989]

Indian educational content is truly elite

[@pastaboiii3324]

this is lit, so easy to understand thank youuuu

[@kananthi1218]

Great work sir....👍seriously feeling encouraged and hopeful whenever I hear ur voice 😇

[@Ranjithkumar-vh2kp]

Dude you are god of teacherssss . ..🌩️

[@mohit7581]

Goated video just fits the whole concept in my mind with in minutes

[@Danger12618]

thank you so much sir, i find so difficult to understand the diagram at first but now I've understood very well after watching this 🥰👍🏻👍🏻👍🏻👍🏻

[@jingyasajena5624]

Thankyou so much for clearing my concept....This was just precise n amazing💫

[@jhunamanidei4272]

I feel God blessed me with this amazzzingggggggg videooo😭💘 Brooo u areeeee sooooi goooooddddddddddddd😤😤😤👍🏾👍🏾

[@factsss7]

Outstanding sir

[@stfu5210]

better then school lectures dude literally solved the confusion like it was nothing

[@bhuvanvayam928]

Victory for huygens

[@Pyara_munda]

Awesome... Really thank you❤❤❤❤

[@REVIEWSGALATTA]

Using the same triangle if i calculate the cos i/cos r i get the constant , is that also right?

[@RaviKumar-sw8dh]

Please add this video to the wave optics playlist also make videos on another topic of this chapter because the way you explain makes me love physics ❤❤😀

[@mansichandani9024]

he has already done that on his website

[@hn4357]

Bro made me understand which my 5 physics teachers couldn't do

[@shilajawani4003]

can anyone provide me the playlist link??

[@audreyli9535]

at 10:58, if it has a slower velocity and speed, shouldn't it take a different time, thus the statement in the video false?

[@the__saksham]

no the velocity maybe different, the the time is same. when the endpoint of wavefront touches surface in time 't' then the wavelet produced from the first point will propagate in that time t.

[@audreyli9535]

@@the__saksham Ah, ok. Thank you for your response.

[@pragathibharathi5520]

Yeppa super da

[@HyperXRahat]

Thank you sir

[@davidbrisbane7206]

I saw a video on Fermilab which basically says that you can't use Huugen's princple to determine the correct path of light through the second medium because you can align the wave fronts in *several ways* in the second medium, only one of which agrees with experimentation. To understand and derive Snell's law correctly, it looks to me like it is necessary to deduce this law from Maxwell's equations.

[@mananvelani3042]

Very nice sir science is made easy by you.

[@shubhamshubham6621]

Awesome👍

[@ernestschoenmakers8181]

Light is not really slowing down if it enters an optical denser medium like water but it's the interiaction with the medium which is called group velocity is less than its normal velocity called the phase velocity.

[@ramyasriixa2769]

He never disappoints us 🔥🔥

[@johnnjuguna84]

I love it. You are amazing.

[@Accountt_4]

DOES THE INTERFACE ACT AS A HUYGEN SOURCE OR IS IT THE INCIDENT WAVEFRONT WHICH ACTS A HUYGEN SOURCE...PLZ EXAPLAIN🙏🙏🙏

[@thewalkingbringerofdeath3015]

I believe it is the wavefront since the secondary waves originate on the wavefronts emitted by a luminous object.

[@srirampatnaik9164]

Stop screaming 😱

[@prathameshprafulhole2662]

I came here after viewing the videos of reflection and huygens theory and it just keeps getting better!

[@djtechzz]

why will be the time be same in 11:08

[@dr.allwyndsouza5246]

Same question, one is incident ray other is refracted ray, how can they make both of them simultaneous 😅

[@brighttips8203]

Super explanation

[@mustafak6157]

How are time taken equal?

[@shubhamsaha6130]

Hey Master! You are just great !!!

[@udayammanikumaran9744]

superb

[@rohansahni9701]

I have one question : when finding the distances, why is the time same for both??

[@someones2413]

because they are travelling at the same time, one is just further. We are taking a set time frame and saying that one travelled with a distance of v1t and other with v2t

[@ricomajestic]

What is the name of the software that he uses to make these drawings and animations in real time? This is a good teaching tool.

[@sajjadmazinabd-al-gany6242]

Did you know its name? Im searching for it too

[@VG__]

3:30 11:40

[@kkis]

beautiful

[@1haki.sirius]

Finally I got it I am crying 😭

[@sirajali2475]

Amazing

[@harikrishnan3711]

AWSM :)

[@studyharder3765]

5:17 lmao xDD

[@murugesansasi8306]

First likes 👍

[@robbidharmarao7451]

How time is cancelled

[@AnushkaSharma-ok2er]

My goodness god bless u😭

[@chukhu4669]

I love you

[@ddesai8100]

Where is ram sir in hindi????😭😭😭😭

[@murugesansasi8306]

First View

[@thingintresting5495]

❤

[@anishaghosh101]

I wish light is not some kind of field

[@ernestschoenmakers8181]

An eletromagnetic field that is waving but not like normal waves like waterwaves but waves that come in packets called photons.

[@kashishrane5800]

😀👍

[@arshhiyasinha2064]

13th like...

[@vineet5701]

First view

[@bezakibret3709]

So hard

[@vaibhavtiwari8113]

Now 69 comments 😗

[@alamgirhossien4004]

awesome