Prof. thanks for the demonstration. Can you please tell me which oscilloscope software are you using to visualise waveform on your screen? I need to show the same for my students.
I'm using Spectre. It recently traded hands over to a new company and I'm not sure if they're selling new licenses yet. But here's the link: www.zynaptiq.com/macaudioapps/
Why was the tube's air volume 2 Hz off from the tuning fork? Measuring the water from the top of the meniscus wouldn't have even made such a wide intonation wave. I'm just curious, maybe 343m (standard) is a constant with electronic sine waves while temperature only then directly effects amplitude dissipation instead of temperature determining the size of the metal fork because metal expands at lower temperatures. What do you think?
Dear Prof., I have a mix up in my terminology, I think you can clear things up. I did the following experiment: I have air flowing through a straight pipe. Pressure ratio between outlet and inlet is lower than the critical pressure ratio, which suggests flow velocity at the outlet is close to the speed of sound. I have recorded the sound of this process and analyzed the frequency spectrum. Suprisingly for me (but maybe not for you), the dominant frequencies are in a integer ratio to one another. So this would imply a standing wave behaviour.. but can it be called that? The air is moving at a great speed through the pipe after all. I search on the web for explanation, of little avail. Literature containing a mathematical approach would be greaty appreciated. Take care, love your videos.
The term "standing wave" is typically used to describe a resonance that is happening in a room. So yes, what you are observing in your experiment is a resonance, and yes, multiple frequencies resonate simultaneously. For a pipe that is open at both ends, the fundamental resonant frequency will have a wavelength that is twice the length of the pipe. And then yes, integer multiples of that frequency will also resonate. Here's some more information from our book: digitalsoundandmusic.com/2-1-4-resonance/
At water surface and open surface we apply boundary conditions i.e., a node is formed at the water surface (since its displacement must be zero at all times) and an antinode is formed at the open surface. Distance between a node and an antinode is lambda/4, where lambda = wavelength of the applied frequency.
Thankyou so much prof. I'm 10th grade, and I wasn't able to understand the experiment which was in our book... Now I'm very clear about it
Icse op
BEST VIDEO ON THE WHOLE INTERNET
wow that must be a cold room
Thanks for the clear demonstration of this concept!
got cleared with the demonstration.....................thank u :-)
Thank you so much
wow thank you for this very informative lecture. i am finding a way to change sound using resonance for my bike exhaust
Thanks. Good demonstration...
tq for the demonstration
Nice demo
Prof. thanks for the demonstration. Can you please tell me which oscilloscope software are you using to visualise waveform on your screen? I need to show the same for my students.
I'm using Spectre. It recently traded hands over to a new company and I'm not sure if they're selling new licenses yet. But here's the link: www.zynaptiq.com/macaudioapps/
Help's a lot👍
Ty
If you put the same tuning fork down inside the pipe and remove the water will a echo and resonate at the same time
amazing!
Why was the tube's air volume 2 Hz off from the tuning fork? Measuring the water from the top of the meniscus wouldn't have even made such a wide intonation wave. I'm just curious, maybe 343m (standard) is a constant with electronic sine waves while temperature only then directly effects amplitude dissipation instead of temperature determining the size of the metal fork because metal expands at lower temperatures. What do you think?
tysm
Dear Prof., I have a mix up in my terminology, I think you can clear things up.
I did the following experiment: I have air flowing through a straight pipe. Pressure ratio between outlet and inlet is lower than the critical pressure ratio, which suggests flow velocity at the outlet is close to the speed of sound. I have recorded the sound of this process and analyzed the frequency spectrum. Suprisingly for me (but maybe not for you), the dominant frequencies are in a integer ratio to one another. So this would imply a standing wave behaviour.. but can it be called that? The air is moving at a great speed through the pipe after all.
I search on the web for explanation, of little avail. Literature containing a mathematical approach would be greaty appreciated.
Take care, love your videos.
The term "standing wave" is typically used to describe a resonance that is happening in a room. So yes, what you are observing in your experiment is a resonance, and yes, multiple frequencies resonate simultaneously. For a pipe that is open at both ends, the fundamental resonant frequency will have a wavelength that is twice the length of the pipe. And then yes, integer multiples of that frequency will also resonate. Here's some more information from our book:
digitalsoundandmusic.com/2-1-4-resonance/
Thankyou😻
Helped a lot sir👍
What specific software and equipment was used in this demonstration?
Thanx sir ☺️☺️☺️☺️☺️☺️
Helpful
Sir, What is the effect of inner diameter and thickness of pipe on resonance?? Any formula ??
Sir where are you from
At 1:42 why is it 1/4 of the wavelength
Because at that point node is formed ie the displacement of wave is zero there.....
At water surface and open surface we apply boundary conditions i.e., a node is formed at the water surface (since its displacement must be zero at all times) and an antinode is formed at the open surface. Distance between a node and an antinode is lambda/4, where lambda = wavelength of the applied frequency.
thanks...upload more and more videos about waves
Having the sensor pick up your voice is confusing.