Standing Waves and Harmonics

Not all waves travel across the ocean or across the universe. Some are stuck in a certain spot! Like the vibrations of the strings on a guitar. What's the deal with these standing waves? And what's this, quantization? Oh my! We'd better learn about this concept before digging into modern physics.

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[Lucky]

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!

[dheeraj]

I was trying to understand musical chords and ended up here

[kikiwg]

I was NOT expecting that intro, lowkey enjoyed it though

[VoodooChi]

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.

[myworldmusic]

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

[PerpetualPrograstinator]

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!

[TranceCore]

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

[lauraoelke]

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

[jennydeng]

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

[Canjeero]

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

[martyjewell]

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.

[starexplorers]

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.

[carrot_]

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

[PowerPointShw]

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

[mrzbrz-qqyq]

Cool way of remembering nodes

node = no amplitude
Antinode = yes amplitude

[dfiala]

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_Ahmed]

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]

Beautiful explanation of a beautiful topic. Thanks Prof Dave.

[Putrycz]

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!!

[imad]

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