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The equation of a wave | Physics | Khan Academy

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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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Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
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Опубликовано:

5 сен 2024

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Комментарии : 417

@filippetrovic9823 7 лет назад

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

@themechanic132 2 года назад

same dude!

@InvincibleAirman 6 лет назад

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

@geico105 6 лет назад

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

@swnsar 5 лет назад

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

@stephensynchronicity5631 5 лет назад

Imagine what we did before RU-vid

@user-sq1kz3ow3k 5 лет назад

InvincibleAirman the same lol

@yogitagoswami9286 4 года назад

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

@fromexoplanet21 2 года назад

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

@raghdaelraaie9335 Год назад

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

@diby1555 6 лет назад

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

@douchizheng3086 4 года назад

I want to thank RU-vid 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, RU-vid 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 3 года назад

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

@ritzrox4679 Год назад

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

@forward876 Год назад

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!

@NaveenKumar-vj9sc 3 года назад

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.

@TheEliteCoder 4 года назад

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

@rubaiyatmehedi9337 4 года назад

@Bruce Xu specially during this pandemic

@gnosis33-real 4 года назад

You you could say it's a Utopia because you could have just learned from you RU-vid 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 4 года назад

@Lisa Simpson which grade are you at?

@rubaiyatmehedi9337 4 года назад

@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 4 года назад

@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.

@maniyerjokhio2013 6 лет назад

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 6 лет назад

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

@HAWI-SO Год назад

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.

@wesleymarquardt4708 2 года назад

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!

@ameennaseem8936 4 года назад

one of the best explanations i have ever seen

@googleearth.755 3 года назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-EkcayRP5IGY.html get a real view of sinusoidal waves

@jayantnigam5912 6 лет назад

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....👍👍🙇🙇👏👏

@rahulsurwase6627 3 года назад

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

@shmkrar1153 2 года назад

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!

@shakirbashir132 4 года назад

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

@abenaboateng650 4 года назад

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

@nastarankianersi104 3 года назад

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!

@Slime5276 6 лет назад

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

@masudraihan6905 4 года назад

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...

@MrExtremehustler 6 лет назад

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

@nataliabacic 4 года назад

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

@oofsper 10 месяцев назад

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

@amatore6 2 года назад

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.

@roopeshonline 2 года назад

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

@nickdaniel8636 7 лет назад

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

@harshguptaxg2774 Год назад

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

@matemol4880 3 года назад

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 3 года назад

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 3 года назад

@@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

@lakshmidevihs2787 Год назад

this was out of this world thanks a lot

@mohammedsanaullah1065 6 лет назад

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

@semimathi6018 5 лет назад

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

@its_mohammedsaee 4 года назад

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

@soomindaroosianguy 6 месяцев назад

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

@sharurethi7809 3 месяца назад

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

@krishnaprasath 5 лет назад

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...:)

@rocketracoon411 2 года назад

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

@diribamosisa3760 2 года назад

this is awesome.im very thankful

@yoobro6767 4 месяца назад

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

@eftakharsunjid9399 4 года назад

Alhamdulillah, I have felt this matter in this video.

@taiseiraziz6105 4 года назад

anaHr ?

@Kombivar 4 года назад

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

@dearagrani9624 4 года назад

Yah!!

@donlimonesioyt9644 5 месяцев назад

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

@mridulasharma1480 4 года назад

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

@doublewilliams9897 Год назад

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

@zuhairalsaffar7001 4 года назад

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

@darewolf6232 12 дней назад

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

@hammadiazaiez7370 5 лет назад

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

@mxame 5 лет назад

Thank you for this cool explanation !

@MrMrannoying 5 лет назад

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!

@anshumaningale06 4 месяца назад

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

@fardinhossain5410 2 года назад

holy moly! this tutor is amazing!

@waseemakhtar8981 Год назад

Good way of explanation

@obediencernorupiri4342 4 года назад

this is really helpful.the explanation is on point

@MayankGoel447 3 года назад

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

@subashkandel8116 3 года назад

Its operation of functions..

@RealEverythingComputers 11 месяцев назад

This video really helped me understand wave functions! Thanks!

@NiharikaAChirayil 4 месяца назад

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

@GaneshReddy9 2 года назад

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

@Mulkek 3 года назад

Thanks, and it's so easy & simple!

@arifyiusuf2861 4 года назад

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

@B__ArnavSingh 5 месяцев назад

very nice really impressed

@randomvideos3628 Год назад

Diamond of an explanation...

@FreefireKing-pi2yx 6 месяцев назад

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

@ahmadhaziq3358 2 года назад

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

@vir_6282 4 года назад

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

@csywf 3 года назад

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

@justanotherguy469 2 года назад

This is just great! A total education via RU-vid. 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!

@rebeccaosbaldeston1765 3 года назад

How did people graduate before youtube?

@zainabhussain3887 3 года назад

Dude I too think the same

@doekhali4596 2 года назад

This is the best explanation ever

@caleb7799 6 лет назад

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

@nagrajkv5152 9 месяцев назад

Thank you very much. excellent presentation...

@aydinberk69 5 лет назад

Thanks for everything.

@MrArlenBrazill Год назад

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

@pictureking1958 5 месяцев назад

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 5 месяцев назад

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.

@jasonyao3753 3 года назад

Spent 4 years in college and now I finally understand high school math thanks so much😅

@daweihuang4606 7 лет назад

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

@williamstephenjones3863 Год назад

This is phenomenal

@ryanmcdonald2027 19 дней назад

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 :)

@MichaelSchwark-yn3jb Год назад

Amazing! Thank you! I got it!

@DavidKasanga-kq8ex 7 месяцев назад

Profound explanation

@rebeccaly 3 года назад

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

@MS-sm6oj 9 месяцев назад

This was well-explained. Good job

@asha8761 3 года назад

thank you soo much!!!!!!!

@deadpool-wp1eq 3 года назад

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

@syasyaas 2 года назад

thank you for saving my life

@americanborn6768 6 лет назад

1:33 Duuuuuuude! Totally Cowabunga! Surfs way up, brah 🤙

@line8748 2 года назад

Great explanation! Thank you very much.

@MeaHeaR 3 года назад

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

@Shariar_Labib 4 месяца назад

wish u were my physics teacher....lecture wouldn't be that boring

@alimukhtar4759 Год назад

Wonderful explanation David 👍

@thewhyquestion5589 2 года назад

Thank you sir

@prabhdeepsingh2916 4 года назад

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

@itrstt66 2 года назад

By the way could do a video on leveling sines amplitude as the frequency changes? i was searching for that when i found this video, and i really like your style of putting things into a more clear perspective.