Sound as a Standing Wave - IB Physics

This lecture explains the principles behind a classic physics experiment where a tube is placed in water and raised to different heights while a sound source is held above it.

0:00 Standing longitudinal waves & graphs
1:47 Nodes in a standing sound wave
2:44 The water tube and tuning fork experiment
6:42 Finding the wavelength of the sound wave
7:58 Harmonics of sound waves in tubes

[genocydical]

No words can convey how effective, thorough, and digestible your lectures are. This applies to all of your lectures for all topics. I shared your channel to all of my friends in which they also found them helpful. Thank you so much!

[GammaFZ]

This is why cloning should exist, every ib school should be delivered a copy of you

[MarkTheStudiousOne]

Amazing lecture! Having the actual particle visualizations makes it sooo much more understandable

[Tom-spgy]

This is one of the toughest topics to visualize and truly understand, yet you made everything seem so easy and simple and straightforward.

[od]

Fantastic lecture! Thank you! I wish every professor would teach this subject this way

[caseystyer]

You could be a world class expansion chamber designer. 2 stroke pipe theory is what brings me here. Cheers!

[aaryanshanbhag]

You've done a great job with the animations. Thank You.

[orgasmicchapo]

i literally thought i was never gonna understand this topic until you explained it thanks alot

[NABAJYOTIMOHAPATRA-if]

After watching dozens of videos regarding standing waves (which were only based on formulas, graphs and mathematics ), finally I got a clear picture of standing waves in organ pipes in my head. So thank you Andy. The only doubt I am remained with is "is it possible to create a sound standing wave without organ pipe in the air just by blowing air with our mouth ? "

[dhakdhxhswjdc]

AndyMasley my goat... absolutely saved me from IB physics Muah~

[MelloCello]

5:33
How is it possible to have a node at an open surface? Wouldn't the particle from all the pressure simply push out at the surface, or is the tuning fork at the opening acting as a "barrier" because it is oscillating at the same frequency as the particles within the tube?

[Guts]

What happens if you increase the length of the tube?

[DaidenFenrir]

Is this the reason Fit the 90 degrees Shift phase? When the pressure is maximum the particles aire full stopped so the velocity is 0

[yuseffnehru]

I see. So the aircraft has two types of vortex generator? The main? Engine, and the engine which propels the craft horizontally.

In that case, how does it do a horizontal hyperjump?

[dimitrijevicveljko]

Hi Andy, thanks for explaining. One question though: In the fork and water tube experiment, does the distance of the fork from the water have to be (wavelength of the fork's vibration in that air) x 1/2, 1, 1/5, 2 etc? Or will the nodes remain in the same spot if we keep the pipe the same yet pull away the fork further?

[yuseffnehru]

The counter rotating magnets is for the vortex generation and the vortex will be focused on the dome of the aircraft producing a tube like wave patterns. I believe this is where you use the standing soundwave to amplify the vortex from inside the aircraft?

So the sound wave could still work in vacuum of space? Is this true

[yuseffnehru]

But what about the horizontal hyperjump?

[jeffreydani]

I don't think peak waves can become trough wave, the software you are using might mislead some new wanting to learn about waves