The equation of a wave | Physics | Khan Academy

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  • เผยแพร่เมื่อ 25 พ.ย. 2024

ความคิดเห็น • 430

  • @filippetrovic9823
    @filippetrovic9823 7 ปีที่แล้ว +418

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

  • @fromexoplanet21
    @fromexoplanet21 3 ปีที่แล้ว +54

    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 TH-cam videos...you guys are the best teachers I know, hats off to you💖💐

    • @raghdaelraaie9335
      @raghdaelraaie9335 ปีที่แล้ว

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

  • @InvincibleAirman
    @InvincibleAirman 6 ปีที่แล้ว +946

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

    • @geico105
      @geico105 6 ปีที่แล้ว +49

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

    • @swnsar
      @swnsar 5 ปีที่แล้ว +8

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

    • @stephensynchronicity5631
      @stephensynchronicity5631 5 ปีที่แล้ว +32

      Imagine what we did before TH-cam

    • @刘天洋-m9f
      @刘天洋-m9f 5 ปีที่แล้ว +1

      InvincibleAirman the same lol

    • @yogitagoswami9286
      @yogitagoswami9286 4 ปีที่แล้ว +17

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

  • @diby1555
    @diby1555 6 ปีที่แล้ว +94

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

  • @douchizheng3086
    @douchizheng3086 4 ปีที่แล้ว +53

    I want to thank TH-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, TH-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

  • @Meow_yj
    @Meow_yj 3 ปีที่แล้ว +12

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

  • @ritzrox4679
    @ritzrox4679 ปีที่แล้ว +6

    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

  • @maniyerjokhio2013
    @maniyerjokhio2013 6 ปีที่แล้ว +20

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

  • @ameennaseem8936
    @ameennaseem8936 4 ปีที่แล้ว +37

    one of the best explanations i have ever seen

    • @googleearth.755
      @googleearth.755 3 ปีที่แล้ว

      th-cam.com/video/EkcayRP5IGY/w-d-xo.html
      get a real view of sinusoidal waves

  • @NaveenKumar-vj9sc
    @NaveenKumar-vj9sc 3 ปีที่แล้ว +11

    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.

  • @forward876
    @forward876 ปีที่แล้ว +2

    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!

  • @jayantnigam5912
    @jayantnigam5912 6 ปีที่แล้ว +10

    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....👍👍🙇🙇👏👏

  • @simranjoharle4220
    @simranjoharle4220 6 ปีที่แล้ว +5

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

  • @wesleymarquardt4708
    @wesleymarquardt4708 2 ปีที่แล้ว +5

    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!

  • @rahulsurwase6627
    @rahulsurwase6627 3 ปีที่แล้ว +1

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

  • @shmkrar1153
    @shmkrar1153 2 ปีที่แล้ว +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!

  • @nastarankianersi104
    @nastarankianersi104 4 ปีที่แล้ว +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!

  • @shakirbashir132
    @shakirbashir132 4 ปีที่แล้ว +1

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

  • @oofsper
    @oofsper ปีที่แล้ว +1

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

  • @abenaboateng650
    @abenaboateng650 5 ปีที่แล้ว +3

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

  • @Slime5276
    @Slime5276 7 ปีที่แล้ว +4

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

  • @amatore6
    @amatore6 2 ปีที่แล้ว

    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.

  • @harshguptaxg2774
    @harshguptaxg2774 ปีที่แล้ว +3

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

  • @sharurethi7809
    @sharurethi7809 6 หลายเดือนก่อน +1

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

  • @lakshmidevihs2787
    @lakshmidevihs2787 ปีที่แล้ว +1

    this was out of this world thanks a lot

  • @MrExtremehustler
    @MrExtremehustler 6 ปีที่แล้ว +1

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

  • @donlimonesioyt9644
    @donlimonesioyt9644 8 หลายเดือนก่อน

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

  • @soomindaroosianguy
    @soomindaroosianguy 9 หลายเดือนก่อน

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

  • @Seeker-pq4ec
    @Seeker-pq4ec 2 หลายเดือนก่อน +1

    Amazing😍.
    Sir why the wave is shifting towards right when we subtract and towards left when we add?

  • @iamuonline
    @iamuonline 2 ปีที่แล้ว +2

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

  • @nickdaniel8636
    @nickdaniel8636 7 ปีที่แล้ว +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

  • @masudraihan6905
    @masudraihan6905 4 ปีที่แล้ว +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...

  • @semimathi6018
    @semimathi6018 5 ปีที่แล้ว +1

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

  • @mohammedsanaullah1065
    @mohammedsanaullah1065 6 ปีที่แล้ว +8

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

  • @TheEliteCoder
    @TheEliteCoder 4 ปีที่แล้ว +130

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

    • @rubaiyatmehedi9337
      @rubaiyatmehedi9337 4 ปีที่แล้ว +1

      @Bruce Xu specially during this pandemic

    • @gnosis33-real
      @gnosis33-real 4 ปีที่แล้ว +2

      You you could say it's a Utopia because you could have just learned from you TH-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 4 ปีที่แล้ว

      @Lisa Simpson which grade are you at?

    • @rubaiyatmehedi9337
      @rubaiyatmehedi9337 4 ปีที่แล้ว +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 4 ปีที่แล้ว

      @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.

  • @HAWI-SO
    @HAWI-SO ปีที่แล้ว +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.

  • @nataliabacic
    @nataliabacic 4 ปีที่แล้ว +2

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

  • @rocketracoon411
    @rocketracoon411 2 ปีที่แล้ว +1

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

  • @matemol4880
    @matemol4880 3 ปีที่แล้ว +1

    Ohhh, my Gooooooosh!!!! Finally I understood what this equation means! I'm learning physics at uni, I'm in the 3rd semester and I just now understood that what I have already 'learned'. You are awesome!

    • @aksharaverma880
      @aksharaverma880 3 ปีที่แล้ว

      So you are telling me that after studying all this stuff in 11th grade currently, we have to do everything all over again at uni??!!! Nooooooo..

    • @matemol4880
      @matemol4880 3 ปีที่แล้ว

      @@aksharaverma880 Yes, but you are learning all the stuff from an another point of view and you will go much deeper into the meaning of the equations. You will enjoy it, if u study hard. This is my experience. If you are lazy and don't give a shit, than physics at uni is going to be a nightmare, you will suffer and die. :DD

  • @doublewilliams9897
    @doublewilliams9897 ปีที่แล้ว +1

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

  • @ezequiel.m
    @ezequiel.m 2 หลายเดือนก่อน +1

    Why are many of the viewers so satisfied with the video but do not leave a single like in it.

  • @RealEverythingComputers
    @RealEverythingComputers ปีที่แล้ว

    This video really helped me understand wave functions! Thanks!

  • @o.s.0215
    @o.s.0215 2 ปีที่แล้ว +2

    شباب الأردن _جامعه اليرموك
    منورين

  • @aqsao1158
    @aqsao1158 3 ปีที่แล้ว +1

    What is the difference between a sin and cosine wave equation?

  • @hammadiazaiez7370
    @hammadiazaiez7370 5 ปีที่แล้ว

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

  • @eftakharsunjid9399
    @eftakharsunjid9399 4 ปีที่แล้ว +8

    Alhamdulillah, I have felt this matter in this video.

  • @its_mohammedsaee
    @its_mohammedsaee 4 ปีที่แล้ว +2

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

  • @mxame
    @mxame 5 ปีที่แล้ว +4

    Thank you for this cool explanation !

  • @GaneshReddy9
    @GaneshReddy9 2 ปีที่แล้ว

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

  • @Milesblue98
    @Milesblue98 3 หลายเดือนก่อน

    Superb bro I never expected to maths be understandable but my vision got changed after watching your vid😊

  • @krishnaprasath
    @krishnaprasath 5 ปีที่แล้ว +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...:)

  • @diribamosisa3760
    @diribamosisa3760 2 ปีที่แล้ว

    this is awesome.im very thankful

  • @yoobro6767
    @yoobro6767 7 หลายเดือนก่อน

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

  • @ahmadhaziq3358
    @ahmadhaziq3358 3 ปีที่แล้ว

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

  • @mridulasharma1480
    @mridulasharma1480 4 ปีที่แล้ว +2

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

  • @ryanmcdonald2027
    @ryanmcdonald2027 3 หลายเดือนก่อน

    thank you very much for this ! this is extremely important when learning how to be a musical sound engineer/audio engineering when mixing and mastering rock n roll music ! lol :)

  • @obediencernorupiri4342
    @obediencernorupiri4342 4 ปีที่แล้ว +1

    this is really helpful.the explanation is on point

  • @csywf
    @csywf 3 ปีที่แล้ว

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

  • @NiharikaAChirayil
    @NiharikaAChirayil 6 หลายเดือนก่อน

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

  • @vir_6282
    @vir_6282 4 ปีที่แล้ว +7

    I can understand this in 6th grade... amazing explanation

  • @Mulkek
    @Mulkek 3 ปีที่แล้ว +1

    Thanks, and it's so easy & simple!

  • @Kombivar
    @Kombivar 4 ปีที่แล้ว +2

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

  • @MrMrannoying
    @MrMrannoying 5 ปีที่แล้ว +3

    I love this explanation! My textbook and Teacher used this other way of getting the argument for the cos/sine. After establishing the wavelength and its relation to the distance it then used cos[2pi/wavelength(x-vt)], to establish how it shifted over time due to velocity. After that, the velocity was changed into terms of wavelength and period. yada yada. I enjoy your video a lot more though!

  • @MayankGoel447
    @MayankGoel447 4 ปีที่แล้ว +1

    This is the best explanation of waves. Now I get actually understand what it actually means. David can you please tell why does waves moves to the right because of minus sign

  • @fardinhossain5410
    @fardinhossain5410 2 ปีที่แล้ว

    holy moly! this tutor is amazing!

  • @randomvideos3628
    @randomvideos3628 ปีที่แล้ว

    Diamond of an explanation...

  • @FreefireKing-pi2yx
    @FreefireKing-pi2yx 9 หลายเดือนก่อน

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

  • @zuhairalsaffar7001
    @zuhairalsaffar7001 4 ปีที่แล้ว +2

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

  • @AnasMohammad-jw1fc
    @AnasMohammad-jw1fc 10 วันที่ผ่านมา

    Broo I love this lecture its truly amazing

  • @arifyiusuf2861
    @arifyiusuf2861 4 ปีที่แล้ว +1

    Coaching system in india particularly in kashmir wastes lots of money and precious time it is 100 times better
    Thanks from kashmir

  • @dhman-n4g
    @dhman-n4g 7 ปีที่แล้ว

    This video provides a very great explanation, probably the best physics video i watched this year

  • @jebel6304
    @jebel6304 5 วันที่ผ่านมา

    eureka moment, loved this !!

  • @MS-sm6oj
    @MS-sm6oj ปีที่แล้ว

    This was well-explained. Good job

  • @nagrajkv5152
    @nagrajkv5152 11 หลายเดือนก่อน

    Thank you very much. excellent presentation...

  • @anshumaningale06
    @anshumaningale06 7 หลายเดือนก่อน

    Even a 10 th class student can understand this very properly explained thank you sir😊

  • @doekhali4596
    @doekhali4596 2 ปีที่แล้ว

    This is the best explanation ever

  • @alimukhtar4759
    @alimukhtar4759 ปีที่แล้ว

    Wonderful explanation David
    👍

  • @line8748
    @line8748 2 ปีที่แล้ว

    Great explanation! Thank you very much.

  • @B__ArnavSingh
    @B__ArnavSingh 8 หลายเดือนก่อน +1

    very nice
    really impressed

  • @aydinberk69
    @aydinberk69 5 ปีที่แล้ว +3

    Thanks for everything.

  • @arunavoanirban
    @arunavoanirban 2 ปีที่แล้ว

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

  • @AliRaza-cj5dn
    @AliRaza-cj5dn 3 ปีที่แล้ว +1

    Why phase Diiference is subtracted for rightwards movement exactly???

  • @MrArlenBrazill
    @MrArlenBrazill 2 ปีที่แล้ว

    I could have used this explanation in physics. I don't see how this video could possibly be any better.

  • @rebeccaly
    @rebeccaly 3 ปีที่แล้ว

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

  • @MichaelSchwark-yn3jb
    @MichaelSchwark-yn3jb 2 ปีที่แล้ว

    Amazing! Thank you! I got it!

  • @jonassmidt7534
    @jonassmidt7534 ปีที่แล้ว

    Insanely good explained!

  • @williamstephenjones3863
    @williamstephenjones3863 ปีที่แล้ว

    This is phenomenal

  • @deadpool-wp1eq
    @deadpool-wp1eq 4 ปีที่แล้ว

    Who is the lecturer? Sir you have done a really good job. I would like to sincerely thank you for your great work.

  • @justanotherguy469
    @justanotherguy469 3 ปีที่แล้ว

    This is just great! A total education via TH-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!

  • @prabhdeepsingh2916
    @prabhdeepsingh2916 5 ปีที่แล้ว

    god of concepts
    very nice video superb.....

  • @pictureking1958
    @pictureking1958 8 หลายเดือนก่อน

    very well explained, the only question is why the time term is being subtracted when we move to the right. because when we move to the right, the time is passing, so we must add the time term. kindly explain this, I am in a really complex state of mind rn.

    • @sokkhengnay8931
      @sokkhengnay8931 8 หลายเดือนก่อน

      You are right, the time is always positive. But, we need a negative number in order to move the graph to the right ,that's why we need a negative sign in front of the positive time. The negative sign in front of the time is not telling us that the time is negative, it's only tell us that the number we need is a negative number.

  • @MeaHeaR
    @MeaHeaR 3 ปีที่แล้ว

    This is Fascinating, but I can never
    remember days later 😁😁

  • @MalgosO
    @MalgosO 7 ปีที่แล้ว

    you people are life savers, thank you

  • @syasyaas
    @syasyaas 3 ปีที่แล้ว

    thank you for saving my life

  • @caleb7799
    @caleb7799 7 ปีที่แล้ว

    God has given you a natural talent for teaching! The best explanation of a wave equation by far.

  • @stephenspain9167
    @stephenspain9167 2 ปีที่แล้ว +1

    excellent explanation👍

  • @frizzleskillet18
    @frizzleskillet18 6 ปีที่แล้ว +2

    Had to comment. This was a flawless explanation. Thank you.

  • @qasimabbasi.
    @qasimabbasi. 4 ปีที่แล้ว

    Great Explanation Sir....

  • @asha8761
    @asha8761 3 ปีที่แล้ว +1

    thank you soo much!!!!!!!

  • @DavidKasanga-kq8ex
    @DavidKasanga-kq8ex 10 หลายเดือนก่อน

    Profound explanation