Standing Waves and Harmonics

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Standing Waves and Harmonics

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Professor Dave Explains

Күн бұрын

Пікірлер: 211

@Lucky10279 4 жыл бұрын

These videos are excellent. He's so good at condensing all the information together in a way that doesn't overwhelm you. He gets right to the point -- no fluff, but somehow also gives enough details for it to all make sense. He's got a real gift for communication!

@dheeraj3945 Жыл бұрын

I was trying to understand musical chords and ended up here

@hanxia9862 6 жыл бұрын

Thanks Jesus

@shantanujha208 5 жыл бұрын

@therealnightwriter I don't think he is even christian . He is just saying that based on his (Dave's) appearance.

@hmmmwhat7207 5 жыл бұрын

therealnightwriter r/woosh

@unluckycriminal 5 жыл бұрын

@therealnightwriter LOOL shut up neckbeard.

@chemistryguy9679 5 жыл бұрын

@@hmmmwhat7207 Can I be in the screen shot?

@yo-akiba 5 жыл бұрын

@@chemistryguy9679 r/canibeinthescreenshot

@kikiwg2264 4 жыл бұрын

I was NOT expecting that intro, lowkey enjoyed it though

@VoodooChi 4 жыл бұрын

Great video! A minor point in the grand scheme of things, but modern tuning systems do not use integer ratios as the basis for frequencies, but irrational numbers. Sometimes they are close, for example the fifth and the fourth, but sometimes they are quite far apart. Ultimately, this is because rational intervals cannot subdivide the octave, so if you use rational intervals you'll always run into problems with intervals which sound bad. By using irrational intervals, you can spread out the error to make the tuning system more flexible.

@myworldmusic7 2 жыл бұрын

I thought professor Dave explains only chemistry but he explains physics too..he's a life saver 😭❤️

@PerpetualPrograstinator 5 жыл бұрын

It's really cool that colors also follow rules of math. That's why certain colors look so good together even though they aren't alike at all. Ex blue and yellow. While certain look hideous when put together ex. Orange and pink. There is a geometric relation of contrast, grading and a whole color theory to be studied. Math is awesome!

@ZzSlumberzZ 5 жыл бұрын

I'd like to know more about this. Can you provide me a good source or article? Thanks.

@supernovasimulations Жыл бұрын

Why you dont like orange and pink? thats just classic sunset flavour

@ScienceTeacher-lm3jk 4 ай бұрын

not sure that colors that "look good together" is tied to standing waves- that's fairly subjective. But standing waves and light ARE the reasoning behind why you can see rainbow patterns in oil on water, or why certain insects can have dazzling colors

@TranceCore3 3 жыл бұрын

2:04, if that's how drums make their sound in slow motion, that's fucking cool.

@lukeali1580 3 жыл бұрын

Amazing, right? I will never look at drums the same way again!

@carultch 3 жыл бұрын

That is an animated graph of the Bessel function, which is the solution to the wave equation with the boundary conditions of a drum head. In other words, that is how a mathematically idealized drum would vibrate.

@lauraoelke9089 4 жыл бұрын

This video was so informative. Thank you again Prof. Dave ! I'm taking Physics II now, and i'm getting so interested in waves. Physics I was such a bore in comparison

@jennydeng593 4 жыл бұрын

Watching this video just made me realize how little I know abt physics....

@evandrocarlociaccia9877 3 жыл бұрын

Hai

@pirate0bloodyskull 3 жыл бұрын

Well good thing there was hardly any physics in the video.

@keshavleitan7800 2 жыл бұрын

@@pirate0bloodyskull ikr

@Canjeero314 Жыл бұрын

I’ve reached a point where I like the video before it even begins, I just know it’s going to be amazing

@martyjewell5683 3 жыл бұрын

I first became aware of standing waves and room nodes in the later 1970's. Room size, acoustics and shape can disastrously affect sound. I have used, to good effect, a graphic equalizer since 1978 in my audio chain. An anechoic chamber might not be practical in your home (mine neither) but a quality EQ can help a lot. I've used an ADC Sound Shaper Two IC since purchase in 1982. Thanks for the lucid explanation of this phenomenon.

@starexplorers1202 2 ай бұрын

Standing Waves and quantization is also the reason String Theory is so important even though it is not well understood. It has the principle of Nature at it's core.

@24carrot_ 2 жыл бұрын

I think we really need more detail about the consonant intervals. Deserves its own video

@PowerPointSh0w Жыл бұрын

I'am a teacher, but feels like a student when he lectures. I enjoyed your videos a lot

@m4rzb4rz-qq3yq 4 ай бұрын

Cool way of remembering nodes node = no amplitude Antinode = yes amplitude

@dfiala9890 5 жыл бұрын

Liked and subscribed! This was an excellent introductory view of harmonics and standing waves. Looking forward to digging through the rest of your material. Thank you, from a life-long autodidact trapped in a cycle of shift work. **edit** The "d" stands for "David", by the way. Glad to see another Dave doing such good work.

@Waqar_Ahmed75 4 ай бұрын

What an amazing overall this classic physics series has been so far. I am enjoying every bit of it. Thank you Dave, your work has been a great help in my exams preparation.

@edsohovocals 11 ай бұрын

Beautiful explanation of a beautiful topic. Thanks Prof Dave.

@StatedClearly 5 жыл бұрын

Thanks!

@Putrycz 4 жыл бұрын

I really like the way you are explaining these concepts!! I do this in my personal note-taking where I will take a complex term and break it down into simpler terms and then try to "walk" my way through the terms in a sequence that makes the "bigger picture" easy to imagine as a progression of ideas that build off of each other in an obviously related way. You do this better than I've seen anyone do in a video before!! Thank you so much, very inspiring!!

@raghuram3926 8 ай бұрын

Hello... Putrycz

@imad7995 7 жыл бұрын

Thank You Prof. Dave. :) This is coming in my exams 2 weeks from now, and the video definitely helped.

@chia916 3 жыл бұрын

Thanks for going into detail on this I always wondered how to explain that

@ANJA-mj1to 9 ай бұрын

Brilliant how you define problem of The amplitude of harmonics in modern way! Thank you for nodes and standing waves. The alternative process-of extracting from the signal the various frequencies and amplitudes are present practical for physical approach like: "How to guid!"

@koungmeng 3 жыл бұрын

Thanks now I know the connection between music and quantum mechanics

@TheSecretBuster 7 жыл бұрын

Thanks Prof! Please make your next videos on Electric Field, Flux, Potential and Gauss Law! Thanks!! :D

@MelloCello7 5 жыл бұрын

Good sh*t man! But on the real, I was looking for a clear and concise explanation of this phenomena, the "must have 0 amplitude at the boundaries" really did it for me. My question is what if you tried to force an incompatible frequency into a wave with a fixed boundary??

@veenabijalwan1226 5 жыл бұрын

Standing waves are a special case of wave interference, for an incompatible wave (different w, where w is angular frequency), you can use the superposition priciple to check the amplitude of the resultant wave. The new wave wont be a standing wave but an interference result. For example, For a 2 mechanical waves on string which are moving in same direction, we can interfere them as- Y1(x,t) + Y2(x,t). It shall come out to be - 2a cos@/2 sin(kx-wt+@/2) where @ will be the phase difference between them. So interference of two diffferent waves can be calculated this way.

@earthling2007 4 жыл бұрын

Thanks professor Dave. I teach earth and space science so I cover electromagnetic waves as well as mechanical seismic waves. I like to do a denser spring demo with the kids but I don’t delve too deeply into the mechanics of waves. I would like to use this video as an enrichment activity though. Thanks so much for this 👍

@abbyimmanuel2826 6 жыл бұрын

thanks Prof Dave! this really helped

@user-zd7sj3ud8s 4 жыл бұрын

Prof dave .. pls can u tell me how can i study pysic in best ways pls ... and im always watching ur videos ❤ Also can u tell me some advices about studying physic pls ?

@lightclock9761 3 жыл бұрын

The explantion is very clear and easy to understand. Thank you very much.

@boltondowney1949 6 жыл бұрын

I have a test tomorrow and you helped a lot.

@dadamote3749 3 жыл бұрын

Sir these short vedios are quite amazing and helpful too. The way you deliver the content is unique in itself. Thankyou Sir.

@sea5205 5 жыл бұрын

One of the best channels!

@incredibleravana2945 4 жыл бұрын

Thanks professor Dave that’s totally helpful for me

@jafool3518 Жыл бұрын

even when within the depths of A-Level physics revision GCSE music still finds a way to haunt me

@KarlMiller-DjKarl 4 жыл бұрын

Fascinating that combined standing waves at constant intervals produce perfect tones in music... Thanks professor Dave... ☮🔥

@jesushernandez-gw2qj 5 жыл бұрын

thanks as always, your videos are always helpful.

@markkennedy9767 Жыл бұрын

Can you explain where the extra length of string comes from when the standing wave is at its highest amplitude vs when it is a straight line.

@sathvikmalgikar2842 3 жыл бұрын

yeah i still cant understand how can someone simplify stuff yet cover all details. Great videoas always. thank you

@MountainHomeJerrel 2 жыл бұрын

Awesome. Thank you for the great video. This is very clear and well presented.

@wolfpatrol318 7 жыл бұрын

There's an error at 2:56. The second major sixth should be a major seventh instead.

@ProfessorDaveExplains 7 жыл бұрын

oh man how did i miss that! it's just a picture from the internet, i should've looked more carefully at it.

@wolfpatrol318 7 жыл бұрын

yeah i had to look at it twice to make sure i wasn't seeing things.

@matrixate 6 жыл бұрын

As the old saying goes..."you get what you pay for." No offense Dave...just being real because I'm sure you'd say the same thing if the tables were turned and being an instructor, you've said it and thought many times.

@SeanChay 5 жыл бұрын

You're observant

@samsara1998 5 жыл бұрын

Phew...glad its not just me that spotted the Major 7th Mix up !

@emmanuelsserugendo97 3 жыл бұрын

You're so amazing professor

@davidogbija5806 8 ай бұрын

Great job done professor Dave🎉

@voidisyinyangvoidisyinyang885 2 жыл бұрын

Hey Professor Dave you should watch Alain Connes, Fields Medal math professor - his youtube lectures on quantum music of the sphere. He calls it (2, 3, infinity) because the 2/3 and 3/2 standing waves are actually noncommutative geometry. There's more to it but I won't steal his show...

@MrZagorefrigeracion Жыл бұрын

You are good explaining !!Congratulations

@drzirkle 7 жыл бұрын

Excellent video! Thanks, I'm going to link here for my students!

@KYCDK 11 ай бұрын

I can tell these are gonna save me for revision

@marcopilati7464 6 жыл бұрын

great lesson. Thanks

@harshaanandh8427 2 жыл бұрын

Lots of love from india sir❤️ Clear explanation..

@Khwartz 7 жыл бұрын

Hello Dave! I have to say that if I know this stuff already Pretty Well, I don't know, just hearing You and seeing your Very Clear btw Presentation, I have Realised something of VERY GREAT Importance to me while relating Standing Waves with something very specific. I guess I have to thank You and to Congratulate You for the Pedagogic Quality :) Very Thanks for your video :)

@matthewbeck6847 10 ай бұрын

If a guitar string is a standing wave, with no oscillations at the boundaries, why does changing the tension change the pitch?

@anisanurmalinda4045 3 жыл бұрын

i love the music for checking comprehensions

@avijitkumar5601 2 жыл бұрын

It was easy after learning this ... Thank you prof.😃

@laurenceschaefer203 4 жыл бұрын

When you pluck a string, it travels like a jump rope it is not 2 dimensional. Wouldn’t the wave also be radial? Or helical?

@spazzmonster 5 жыл бұрын

Great video. Many thanks.

@Sr.Dusty-Leon008-da-III 3 жыл бұрын

thank you very much this helped me a lot while reading my book

@drriazkhan813 4 жыл бұрын

Outstanding sir

@EricPham-gr8pg 5 ай бұрын

I think possible chinese air force of japan or our naval aviation had an idea of roller conveyor build of sound so air plane or anything can ride on it frictionlessly like roller convey by standing way rolling conveyor..that is how the back to the future hover board is designed

@physicslab5787 3 жыл бұрын

Nice explanation

@thembelihlezuma2631 5 жыл бұрын

Thxz a lot prof

@hafsahbokhari1473 6 жыл бұрын

I have an upcoming exam thanks alot professor Dave

@chemistryvoice981 4 жыл бұрын

Thank you professor

@fredashay 2 жыл бұрын

Wait! Why is a third harmonic called a fifth, not a third??? What is it 1/5 of???

@davidcedeno8403 2 жыл бұрын

I came here for fire EQ techniques and left with a lesson on Quantum Physics lol

@nitinbansal5927 5 жыл бұрын

Sir , you look like a ranveer kappoor, (who is indian actor). And you teach excellent

@nitinbansal5927 5 жыл бұрын

Kapoor

@diyakasaragod1152 6 жыл бұрын

nice presentation:)

@sagayamr2842 5 жыл бұрын

Cool he is!

@Dontbeanigga 6 ай бұрын

I luv the intro tooo much😂😂🎉❤

@johnroberts7529 4 жыл бұрын

Many thanks for an informative video. May I ask a question: do I understand correctly that an octave is the sum of the first and second harmonics (or in fact just the second harmonic) and a fifth is the sum of the second and third harmonics (or just the 3rd harmonic in fact). Cheers, in anticaption, John Roberts.

@carultch 2 жыл бұрын

An octave is a 12-semitone interval between two frequencies that have a ratio of 2 between them. A fifth is a 7-semitone interval, that has a 1:1.5 ratio between the frequencies

@bryana201 6 жыл бұрын

such as flavor/color change and spin

@jollyjokress3852 Жыл бұрын

Thank you, now I understand quantization. lol

@asheriff92 4 жыл бұрын

do you have a transcription of this video? I would benefit from a text version to read. Thanks for making!

@asheriff92 4 жыл бұрын

Also, do any of your lessons cover traveling waves?

@jlpsinde 5 жыл бұрын

Very good!

@dakshmalviya3729 3 жыл бұрын

Its great to see Ranbir kapoor teaching physics.. keep it up bro..👍

@gurmeensaini_ 3 жыл бұрын

Yaa i also think same

@tysondavid6873 2 жыл бұрын

Could this be why the all the bills were removed from the Catholic Christian Church and replace with lower frequencies or speaker amplified bells are you able to explain this to me sir

@gurmeensaini_ 3 жыл бұрын

Nice explaination. Respect from Punjab india. 🙏☺

@bryana201 6 жыл бұрын

can this relate to the spin of subatomic physics ?

@valentinabeltran2229 5 жыл бұрын

reaaaally good!

@stanfordkoga-zs9nh 10 ай бұрын

Thank you

@abdulgafoor7076 2 жыл бұрын

Sir do vocal folds vibrate at multiple frequencies at the same time. Means how do vocal folds produce both fundamental vibration and series of harmonics simultaneously??????pls clarify sir. Is it done by vocal folds or vocal tract or by fundamental vibration itself ??

@carultch 2 жыл бұрын

Yes. That is how you can tell the difference between a human voice and a pure sine wave, both with the same frequency.

@heythere7531 6 жыл бұрын

Comprehensive explaination

@adityaa8918 4 жыл бұрын

I am your fan

@kiradownoumbeanderson3335 Жыл бұрын

thanks so much

@brd8764 2 жыл бұрын

Standing & 4th harmonic is physics like we can listen in.

@techspectre3609 2 ай бұрын

if u rlly think about it waves are energy. energy shapes our reality. so waves shapes our reality

@rs-tarxvfz 4 жыл бұрын

Why can't we have *Transcendental multiples* of Fundamental frequency? And what are some systems that exhibit Non-harmonic behavior?

@carultch 3 жыл бұрын

We can. One example of such a system is the vibrations on a drum head, where you need a Bessel function to calculate the natural frequencies. This is why a drum has a characteristic percussive sound, where it doesn't register as a music note to us. It is a mix of frequencies that don't fit their waveforms together, like the harmonics of melodic instrument sounds. It is the case for standing waves on a string, that the harmonics have to be integer multiples of the fundamental frequency.

@alexrichardson5991 5 жыл бұрын

Awesome!

@techspectre3609 2 ай бұрын

as a music producer this was interesting

@vynderma 2 жыл бұрын

If higher frequency means more energy, why are overtones not as loud as the fundamental frequency?

@carultch 2 жыл бұрын

For an unchanged amplitude, a higher frequency means more energy. Overtones have significantly less amplitude than the fundamental frequency.

@abenezertileye6097 3 жыл бұрын

Dude u r a life saver

@thomasalderson368 4 жыл бұрын

this is great!

@giorgixyz1909 3 жыл бұрын

this is amazing

@DC-do5wz 6 жыл бұрын

upload video on Doppler effect

@sadiarahman0010 5 жыл бұрын

Thanks proffy

@alwaysy5178 3 жыл бұрын

Why are light and matter standing waves

@slomljenaploca 6 ай бұрын

Wait a minute: does this means that if standing waves don't behave as they behave due to the natural laws of physics, music as we know it wouldn't exist?