The equation of a wave | Physics | Khan Academy

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  • Опубліковано 28 лип 2016
  • In this video David shows how to determine the equation of a wave, how that equation works, and what the equation represents. Created by David SantoPietro.
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КОМЕНТАРІ • 409

  • @filippetrovic9823
    @filippetrovic9823 7 років тому +393

    I think this is one of the best explanations I have ever seen, btw much better than listening to my physics teacher :D

  • @InvincibleAirman
    @InvincibleAirman 6 років тому +888

    It seems like my graduation from university pretty much depends on UA-cam. Not sure if that's a good or a bad thing.

    • @geico105
      @geico105 5 років тому +43

      It’s good that you have something you can rely on at all, but in case UA-cam ever fails you, you might want to have other forms of resources as back up.

    • @swnsar
      @swnsar 5 років тому +8

      you gonna have the like more than you expected, because most of the people doing like you. unfortunately me too

    • @stephensynchronicity5631
      @stephensynchronicity5631 5 років тому +30

      Imagine what we did before UA-cam

    • @user-sq1kz3ow3k
      @user-sq1kz3ow3k 5 років тому +1

      InvincibleAirman the same lol

    • @yogitagoswami9286
      @yogitagoswami9286 4 роки тому +16

      They teach you this in university!!!
      Here in India they teach us this in 11th grade.

  • @diby1555
    @diby1555 6 років тому +90

    I feel like ive wasted 2 years with tutors....this is so much better....

  • @fromexoplanet21
    @fromexoplanet21 2 роки тому +38

    I've never seen someone explain something so easily and in a way that makes total complete logical sense....our teachers just write some equations without explaining what each of the symbols and numbers represent nor what their relationships are to one another...it is a waste of my time and my life...but you just managed to explain math in such an elegant way that I've never seen before, thank you💖 I basically have survived all these years just by watching UA-cam videos...you guys are the best teachers I know, hats off to you💖💐

    • @raghdaelraaie9335
      @raghdaelraaie9335 Рік тому

      and I was hoping my university is the only place that sucks and treats us this way 🥲

  • @douchizheng3086
    @douchizheng3086 4 роки тому +52

    I want to thank UA-cam and Khan Academy as well as many other knowledge provider like Khan Academy, many education videos are a lot better than what my teacher taught me, UA-cam is a great platform to study, I hope more people can benefit from this platform, knowledge can be spread in a faster, more accurate, easier to understand way

  • @TheEliteCoder
    @TheEliteCoder 4 роки тому +128

    Spent almost six figures in a prestigious university so that I can learn for free from UA-cam. If this isn't a dystopia than I'm not sure what this is.

    • @rubaiyatmehedi9337
      @rubaiyatmehedi9337 4 роки тому +1

      @Bruce Xu specially during this pandemic

    • @gnosis33-real
      @gnosis33-real 3 роки тому +2

      You you could say it's a Utopia because you could have just learned from you UA-cam saved time and money and took a loan out for six figures, started a business and be set for life on the unlimited amount of free knowledge readily available at your finger tips...just saying. Depends on your frame of reference

    • @rubaiyatmehedi9337
      @rubaiyatmehedi9337 3 роки тому

      @Lisa Simpson which grade are you at?

    • @rubaiyatmehedi9337
      @rubaiyatmehedi9337 3 роки тому +6

      @Lisa Simpson no need to apologise for your English you're pretty good.
      And you definitely should check out the trigonometry playlist from Khan academy. These are pretty basic things and you probably should've had a decent idea about these basics of trig since you're in your first year of physics. It's true that it's never too late to learn something but it might affect your institutional grades mate.
      And good luck😉

    • @rubaiyatmehedi9337
      @rubaiyatmehedi9337 3 роки тому

      @Lisa Simpson
      And I might as well suggest you to buy a book called 'University Physics' I bet you'll love it. Would clear out any misconceptions about general physics give you a deeper understanding of the concepts of physics.

  • @ameennaseem8936
    @ameennaseem8936 4 роки тому +38

    one of the best explanations i have ever seen

    • @googleearth.755
      @googleearth.755 2 роки тому

      ua-cam.com/video/EkcayRP5IGY/v-deo.html
      get a real view of sinusoidal waves

  • @Meow_yj
    @Meow_yj 3 роки тому +10

    The explanation is so clear and intuitive! I wish this channel gets more appreciation, it deserves it.

  • @maniyerjokhio2013
    @maniyerjokhio2013 5 років тому +19

    I'll be ever grateful to you for such comprehensive explanation . Really, i could understand this chaotic wave equation only by going through channel ...

  • @simranjoharle4220
    @simranjoharle4220 6 років тому +5

    This video makes that complicated equation look so elegant....thank you so much!

  • @ritzrox4679
    @ritzrox4679 Рік тому +4

    My mind is literally blown, I was searching for a derivation or at least an explanation of the wave equation and you explained it in such a clear way linking every step to the next. I can’t thank you and khan academy enough for putting such amazingly simple explanations for everyone to understand

  • @NaveenKumar-vj9sc
    @NaveenKumar-vj9sc 3 роки тому +9

    I enjoyed every moment of the explanation. This kind of explanation, I was always expecting, when I ask someone to explain me about wave equation but never a satisfied answer i got so far and now i am very much impressed with the content of the video and the way it is explained. I will keep from now on, this as the base explanation, if would want to explain anyone on wave equation. I just want to give infinite like to this video.Thank you soooooooo much.

  • @wesleymarquardt4708
    @wesleymarquardt4708 2 роки тому +4

    THIS WAS SO GREAT. I was so confused when I was given an explanation in class, but this made it so clear. I had some homework concerning this equation and I was totally freaking out, but this was such a life saver. I breezed through the questions after this so thank you Khan Academy!

  • @abenaboateng650
    @abenaboateng650 4 роки тому +3

    Wow so clear. Never fully understood where this equation came from but it makes so much sense from this video. Thanks!!

  • @HAWI-SO
    @HAWI-SO Рік тому +5

    It is a smart idea to use such videos as a professor to facilitate the teaching learning process in class . The video surely can be used as additional learning material to make the concept more clear . It has a very good visual representation.

  • @Slime5276
    @Slime5276 6 років тому +4

    Thank you so much! Your a life saver for University Physics students.

  • @lakshmidevihs2787
    @lakshmidevihs2787 10 місяців тому +1

    this was out of this world thanks a lot

  • @shmkrar1153
    @shmkrar1153 2 роки тому +2

    I have been trying to understand this equation for a long time - I mean years - and I finally get it. Thank you! 😊 Thank you very much!

  • @jayantnigam5912
    @jayantnigam5912 6 років тому +9

    That's the reason why Khan academy's is so awesome the way they explain the things and makes you understand each and very "PARTICLE"...of the subject....i must say..., To core concepts build and dug deep inside your brain which is never gonna fade away...i just salute to you sir....this one of the best explanation i had ever understood from any one....hats off to you....👍👍🙇🙇👏👏

  • @mxame
    @mxame 5 років тому +4

    Thank you for this cool explanation !

  • @nastarankianersi104
    @nastarankianersi104 3 роки тому +1

    I watched this video to try to understand electromagnetic waves. I'm not sure if I had really understood the concept of waves in high school but I absolutely understood now! Thank you so much!

  • @fardinhossain5410
    @fardinhossain5410 2 роки тому

    holy moly! this tutor is amazing!

  • @sharurethi7809
    @sharurethi7809 Місяць тому +1

    Sir this is what I was searching for days.... Thank you so much ❤

  • @nataliabacic
    @nataliabacic 4 роки тому +2

    Thank you for explaining everything. Even the intro, where you define y(x,t), was very helpful.

  • @rocketracoon411
    @rocketracoon411 2 роки тому +1

    Just felt your explanation!!!
    Thank you so much!!👏👏

  • @diribamosisa3760
    @diribamosisa3760 2 роки тому

    this is awesome.im very thankful

  • @krishnaprasath
    @krishnaprasath 5 років тому +4

    wow! one of the best explanations i've ever seen...I've seen khan academy videos before..thanks a lot for the great work u have been doing...:)

  • @donlimonesioyt9644
    @donlimonesioyt9644 2 місяці тому

    I’m studying 12th grade physics in Spain and this video really helped me. Thanks

  • @RealEverythingComputers
    @RealEverythingComputers 8 місяців тому

    This video really helped me understand wave functions! Thanks!

  • @semimathi6018
    @semimathi6018 5 років тому +1

    man wtf ....... so intuitiv and simple... best explanation i've ever seen. thanksss :)

  • @roopeshonline
    @roopeshonline 2 роки тому +2

    Definitely it is going to be my one of the most favorite explanation seen for ever, great job, thanks

  • @forward876
    @forward876 Рік тому

    oh wow! how can the whole world not be geniuses with this quality of explanation so widely available. Too bad, I'm sucking all this up till its dry. Oh BTW Thanks!

  • @MrExtremehustler
    @MrExtremehustler 5 років тому +1

    This guy David is really good. The only person I actually listen to from khan academy.

  • @rebeccaly
    @rebeccaly 3 роки тому

    Thank you!!!!! This makes so much more sense now.

  • @obediencernorupiri4342
    @obediencernorupiri4342 4 роки тому +1

    this is really helpful.the explanation is on point

  • @MichaelSchwark-yn3jb
    @MichaelSchwark-yn3jb Рік тому

    Amazing! Thank you! I got it!

  • @superparth1995
    @superparth1995 5 років тому

    Best video for this topic. Thanks!

  • @mohammedsanaullah1065
    @mohammedsanaullah1065 6 років тому +8

    Just beautiful... Amazing... Wonderful... Just Khan academy 👏👏👏👏👏

  • @Mulkek
    @Mulkek 3 роки тому +1

    Thanks, and it's so easy & simple!

  • @decaybeats
    @decaybeats 5 років тому

    Quick and easy to understand explanation, thank you!

  • @nickdaniel8636
    @nickdaniel8636 6 років тому +20

    Incredible! Even though I didn't get all of it...but the way you explain the formula was absolute stunning! Salute to you bro

  • @ryanmacewen511
    @ryanmacewen511 3 роки тому

    Perfect video! thank you!!

  • @aydinberk69
    @aydinberk69 5 років тому +3

    Thanks for everything.

  • @mohamedmahfouz1813
    @mohamedmahfouz1813 6 років тому +2

    thank you soooo much i'm impressed

  • @oofsper
    @oofsper 8 місяців тому +1

    No words to express how thankful I am for such a beautiful explanation free of cost

  • @jonassmidt7534
    @jonassmidt7534 Рік тому

    Insanely good explained!

  • @doublewilliams9897
    @doublewilliams9897 Рік тому +1

    You're an awesome teacher. Thank you for sharing your knowledge.

  • @williamstephenjones3863
    @williamstephenjones3863 Рік тому

    This is phenomenal

  • @pooravakumar3547
    @pooravakumar3547 5 років тому

    Amazingly explained.

  • @shakirbashir132
    @shakirbashir132 4 роки тому +1

    8 hours of lecture notes and 3 text books, still understood almost nothing.
    5 minutes of this clip and im an expert!
    Thaaaannkkksss!!!!

  • @kaisoku12345
    @kaisoku12345 Місяць тому

    understood nothing out of my textbook intuitively but now i clearly understood this

  • @rahulsurwase6627
    @rahulsurwase6627 2 роки тому +1

    Khan academy should get a Nobel for peace.....you have brought about a revolution in education field....
    Thanks...from this generation Sal

  • @hammadiazaiez7370
    @hammadiazaiez7370 4 роки тому

    sorry my teacher.. but u have to learn this!
    man u are just awesome.. thanks for helping thousands around the world

  •  Рік тому

    It helped a lot thanks!

  • @sanahaskuranage8071
    @sanahaskuranage8071 Рік тому

    awesome video thanks!

  • @NiharikaAChirayil
    @NiharikaAChirayil Місяць тому

    Thank you so much for the video! I was really confused about this topic.

  • @arunavoanirban
    @arunavoanirban 2 роки тому

    I couldn't be more grateful. You're awesome ❤️

  • @hosseinazizi1426
    @hosseinazizi1426 5 років тому

    Very beautifully explained, thank you

  • @randomvideos3628
    @randomvideos3628 Рік тому

    Diamond of an explanation...

  • @line8748
    @line8748 Рік тому

    Great explanation! Thank you very much.

  • @chaitanyagajbhiye6100
    @chaitanyagajbhiye6100 5 років тому

    Amazing explanation. Thanks a lot.

  • @nagrajkv5152
    @nagrajkv5152 6 місяців тому

    Thank you very much. excellent presentation...

  • @harshguptaxg2774
    @harshguptaxg2774 11 місяців тому +3

    Thankyou very much Khan Academy for these kind of intuitive explanation of these concepts

  • @MS-sm6oj
    @MS-sm6oj 6 місяців тому

    This was well-explained. Good job

  • @crickettadka2019
    @crickettadka2019 5 років тому

    Amezing explanation.. thank you

  • @masudraihan6905
    @masudraihan6905 4 роки тому +4

    What a beautiful explanation!!khan academy is really doing a great job....it helped me a lot for visualising and realistic feeling about how a wave propagates...A big thanks to Salman khan for having such greatful tuitors...

  • @soomindaroosianguy
    @soomindaroosianguy 3 місяці тому

    people should fund khan academy more. This organization is literally life saving for my classes.

  • @pluripotentmedico
    @pluripotentmedico 5 років тому +1

    Really helpful
    Thank you so much sir

  • @eftakharsunjid9399
    @eftakharsunjid9399 4 роки тому +8

    Alhamdulillah, I have felt this matter in this video.

  • @ahmadhaziq3358
    @ahmadhaziq3358 2 роки тому

    this is the best explanation I've seen on this topic

  • @FreefireKing-pi2yx
    @FreefireKing-pi2yx 3 місяці тому

    Thank you so much sir for this video it made me clear about wave equation

  • @zuhairalsaffar7001
    @zuhairalsaffar7001 4 роки тому +2

    Sir l like your way of teaching thanks for this video with respect you have helped me so much

  • @DavidKasanga-kq8ex
    @DavidKasanga-kq8ex 5 місяців тому

    Profound explanation

  • @B__ArnavSingh
    @B__ArnavSingh 3 місяці тому +1

    very nice
    really impressed

  • @doekhali4596
    @doekhali4596 Рік тому

    This is the best explanation ever

  • @otvirani
    @otvirani 9 місяців тому

    So good!

  • @mridulasharma1480
    @mridulasharma1480 4 роки тому +2

    I am so so so grateful for this amazing amazing amazing awesome explanation . It's the best channel 💕💕💕💕

  • @ahmedzarka3407
    @ahmedzarka3407 4 роки тому +1

    The Best of The Best ... 👏👏👏👏👏

  • @qasimabbasi.
    @qasimabbasi. 3 роки тому

    Great Explanation Sir....

  • @its_mohammedsaeed928
    @its_mohammedsaeed928 4 роки тому +2

    Best explanation ever 👌 👏 👍
    I tried so much to understand this weird thing and i think i got it now
    Thank U so much

  • @GaneshReddy9
    @GaneshReddy9 2 роки тому

    This is the best video of wave equation I have ever seen thanks a lot

  • @justanotherguy469
    @justanotherguy469 2 роки тому

    This is just great! A total education via UA-cam. Very well
    explained, and graphically displayed. If you could make the cursor just
    a little more pronounced, so my slow mind can follow it on screen, I would be
    very thankful. Thank you!

  • @amatore6
    @amatore6 2 роки тому

    I'm a person without math who has for many years struggled to understand QM and especially the Wave Function. I wish I would have started with this video. From this video I now understand much better what a "function" is and does. I knew that sine and cosine had to be involved in the equation, but now I understand how. I would imagine the QM Wave Function is similar but with more than just x and t involved, such as p, and I know that it is "complex." My goal is to understand how the WF predicts the future state of the quantum particle. This video is a huge help, and I have watched many.

  • @waseemakhtar8981
    @waseemakhtar8981 9 місяців тому +1

    Good way of explanation

  • @csywf
    @csywf 2 роки тому

    It is Soooooo simple and beautiful I really wanna thank youuuu... This is the best explanation!

  • @vanessawertheim
    @vanessawertheim 3 роки тому

    Thank you for this video! 😊

  • @alimukhtar4759
    @alimukhtar4759 Рік тому

    Wonderful explanation David
    👍

  • @tornedsky
    @tornedsky 3 роки тому

    thank you for this!!!

  • @MyLegsAreKindaLong
    @MyLegsAreKindaLong Місяць тому

    amazing explaination

  • @will9678
    @will9678 Рік тому

    You're a Lifesaver

  • @imntts
    @imntts 4 роки тому

    This video is fantastic

  • @avieus
    @avieus 5 років тому

    awesome... thank you

  • @akshithgupta7326
    @akshithgupta7326 7 років тому

    just an awesome explanation

  • @scummybabyelephant6094
    @scummybabyelephant6094 3 роки тому

    God this is BEAUTIFUL!!!

  • @huntermuhib
    @huntermuhib 7 років тому

    Amazingly Awesome.

  • @gemmalouise6814
    @gemmalouise6814 4 роки тому

    Thanks sm really helped !

  • @Kombivar
    @Kombivar 4 роки тому +2

    Awesome stuff! Much more fun than college basics - more freedom.

  • @asha8761
    @asha8761 3 роки тому +1

    thank you soo much!!!!!!!

  • @alma497
    @alma497 6 років тому +1

    Perfect explanation

  • @francislow1767
    @francislow1767 6 років тому +1

    Great job explaining! Helped a lot :D