I have said that so many times every time I watch his videos that thought comes into my head he is a super grade teacher and we are extremely lucky he likes to post videos for us to enjoy and learn from.
Doing interesting things with science is easy. Doing interesting things that help students learn what they are supposed to learn as dictated by states and districts is not as easy. Especially when the focus is getting students to understand and apply the science rather than just being amazed by the cool thing done with the science.
@@JupiterThunder4 What makes it hard for students to learn what they are "supposed to learn" is the breakneck pace at which they have information poured into them and are tested on it. Kids could learn quite intuitively about how everyday objects and cool experiments work, scientifically, if they were allowed to do it slowly and mostly indirectly, through play and playing around with the kinds of things Yeany has lying around. There is so much to be learned by merely talking and thinking about every day activities (such as the geometry lesson that happens when I explain to kids that, because my neighborhood is laid out in grid fashion, there are no shortcuts to my house from the park). Sadly, schools have no patience for this very effective kind of learning; it sacrifices real learning for opportunities to record grades and test scores. I understand that teachers probably don't like the breakneck pace either, but marching kids through it is what they signed up for. That it doesn't work doesn't seem to bother enough of them.
@@JupiterThunder4 Thinking that learning anything outside the information dumping method is "bells and whistles" is exactly what's wrong with American public education.
Very nice! I'm about 45 minutes away from releasing a video on thermoacoustic refrigeration. After that I've planned a follow up with some additional Rijke tube experiments. I've got an enormous 50x4" quartz tube waiting for me to play with. I like your tip on adding wood chips to the screen. I've been thinking about how to get a good smoke flow in the tube for some other filming purposes.
Bruce, Ben, I spent a lot of time, too much time, trying to make an electric Rijke tube for the Physics Bus. I tried hair dryer coil, toaster coil, wound it in different configurations, nothing worked. Lemme know if you figure it out or get an idea. Interesting that you can change the length without the placement of the mesh needing to change too!
hello I hope you read this message it would be great to see what happens if instead of doing it with heat you do it by connecting an amplifier at the bottom of the tube and amplifying infrasonic waves to produce powerful longitudinal waves at the upper end ...
Hmmm... Any of y'all try an induction heater to keep the screen hot? That, plus a servo-controlled sleeve could make for an interesting MIDI instrument.
@@YeanyScience 1) It's NOT the air that vibrates, it's the SCREEN. It's like when you are at the water or having a rain shower, etc... and starts to shake. So, the SCREEN vibrates because of applying HEAT, then it moves (transfer the vibration to) the air and the air "vibrates". 2) Friend, in relation with this pipe: 10:04. You have to put your hands and force it as to generate sound, because the screen inside is loose (so when you tighten it you "fix" the screen inside the pipe and the screen can vibrate the air).
I always enjoy how much Bruce enjoys what he's demonstrating. The way he smiles and laughs with genuine enthusiasm while observing interesting phenomena, even though he's clearly seen them countless times before, is heartening and uplifting. If only we could all be a little more like him.
Friends. That depends on if he has structure in the manner of his preference of manners. When is close to the bell. One of my teachers got offended when my book and pencils went into my back pack while the last few words of the period were delivered.
I love ur videos, world need more passionate people like u. I learn so much with u, language too. I'm from Brazil. Keep making those master pieces, please!
Great video once again! I'm now thinking of putting a nichrome wire in there so it can be heated permantently. Then you'd have a usable musical instrument.
Thank you Hocam, I truly appreciate your concern. I took some time off to do some long promised remodeling work around our house that I had been putting off. I was not able to use my old school setting due to Covid concerns, and the garage area that I film in was filled with construction material.
@@YeanyScience Thank you Mr. Yeany again. I am science teacher in the middle school. I learn useful experiment and new vision by your videos. You become my teacher too... Take care of yourself. See you soon.😊
With some work, you could rig up a bunch of these things and put heating elements inside the mesh. Hook up some controls, and you'd get a really laggy organ! ...and probably a tripped breaker or two :D
1) It's NOT the air that vibrates, it's the SCREEN. It's like when you are at the water or having a rain shower, etc... and starts to shake. So, the SCREEN vibrates because of applying HEAT, then it moves (transfer the vibration to) the air and the air "vibrates". 2) Friend, in relation with this pipe: 10:04. You have to put your hands and force it as to generate sound, because the screen inside is loose (so when you tighten it you "fix" the screen inside the pipe and the screen can vibrate the air).
creo que el efecto que produce el mover la franela en la ultima parte del video es porque el sonido se transmite y vibra por las paredes del mismo tubo no solo por las inferiores y exteriores ...
Came here from recent NightHawkInLight video that referenced this in the description. Quickly skimmed the video titles and descriptions as well, I expect those will be interesting based on how you handled this subject. Also tempting to check my shed, I think I've got some scrap materials around that might just be suitable for this purpose. It wouldn't be efficient at all, but a PTC heating element inside the tube hooked up to a relay which gets enabled by the doorbell or a motion sensor for a few minutes could be neat as well. Depending on the heating element maybe a bit too slow to respond as a doorbell but could still be fun! One thing will never stop entertaining me though, what the pronunciation of words with a Dutch origin end up getting by speakers of other languages. For example I don't think I've heard any English speakers except one or two museum curators and one linguist say Vincent van Gogh anywhere near correct. But that's fine really, it wouldn't make sense to expect people to know that ij digraph in our weird language.
That was interesting about the downspout and how it was held. I noticed with some 3 and 5 foot lengths of quartz tubing if held with only thumb and forefinger and struck with a rubber hammer for testing knee jerks, they only like to ring when held at certain points too. There are so many things to try with tubes. As an aside if my quartz tubing is rubbed up ad down with a wet cloth, the sound becomes annoyingly loud where it starts to hurt your ears. There is this other way to make sound from a tube by simply filling it with water as told by John Tyndall. Musical Flow of a Liquid through a Small Aperture When the wetted finger is moved round the edge of a glass, the breaking up of the friction into rhythmic pulses expresses itself in music. Savart’s beautiful experiments on the flow of liquids through small orifices bear immediately upon this question. We have here the means of verifying his results. The tube A B, Fig. 113, is filled with water, its extremity, B, being closed by a plate of brass, which is pierced by a circular orifice of a diameter equal to the thickness of the plate. Removing a little peg which stops the orifice, the water issues from it, and as it sinks in the tube a musical note of great sweetness issues from the liquid column. This note is due to the intermittent flow of the liquid through the orifice, by which the whole column above it is thrown into vibration.
How ace! I am going to entertain the kids (and me) by doing this with the flue for my tent stove :) I guess the reason the tent stove flue doesn’t vibrate is because the air space (fire space) that is the air intake for the flue is already hot. Still makes me wonder why the air vents on the front of the stove don’t contribute to this effect, that would be interesting, a trombone/tent stove musical heat source. Thanks for your great videos!
I had a student job in a science center, where we had a huge organ of these tubes. Thanks again for a beautiful video! Was thinking if it would work with a full 360 degree bend on them, as long as there was a net height difference?
I'm wondering... if you made the screen to be constantly heated, for example make it from high-resistance wire and plug it in, you could produce a lasting note? And if you had plenty of such pipes, you could make a musical instrument by opening and closing them to enable and restrict the airflow?
I see a new kind of pipe organ in this... tubes like these with electric heating elements and a cool breeze at the bottom. Traditional pipe organs use some force of air to create whistles. Using this method could possibly require less power though maybe the volume may not be enough. Just a thought.
It's a very happy sound to us too, Welcome back Bruce, we missed you so much, does it work if we provide a constant source of heating from an electrical heating coil for example? will it be possible then to get a continuous sound necessary to build a heat powered organ? I hope you and your family are doing well, Stay safe
Thank you Ahmad, we are fine. I've seen a couple videos and at least one website that went with electrical heating, I tried it with nichrome wire and a battery charger, it did not get hot enough, it also need a restriction in the tube, for that mica is suggested
I recorded that but didn't make it into the final cut, 3/4 inch 1inch 1.5 and 2 inch all 18 inches long all had the same tone, not identical but really close
There is an end correction term that changes the effective length of a vibrating cylinder of air. It usually isn't much at all. Every open end you have, increases the length by to L = L0 + n*x*D, where D is the diameter, n is the number of open ends (1 or 2), and x is an experimentally determined value of 0.33, as long as lambda/D ranges from 11 to 45, lambda being the fundamental wavelength (twice the effective length for a tube like this).
Hi Bruce! Great video as always, could you explain in a latter video If the diameter of the tube plays a role and if so which? Does one need more energy to make a small tube vibrate?
Hi Jose, yes, I planned on a follow up video and will address that along with some other questions. At the moment I'm working on a few other videos as I wait for supplies that I ordered for part 2
What is it that's so cool. I think it is the possibility of a great artifact of someone was to adopt this method of signal generation for musical purposes. But of course it's going to be removed in post processing. Banging video though ☺️ have fun Mr Yeany
What would happen if the pipe had a single bottom inlet containing the screen and then branched into 3 different length outlets? Would it be possible to make multiple tones with a single screen or would the air tend to rise only through the least restrictive outlet?
This is the science teacher I wanted to have during my school time.
I have said that so many times every time I watch his videos that thought comes into my head he is a super grade teacher and we are extremely lucky he likes to post videos for us to enjoy and learn from.
Doing interesting things with science is easy. Doing interesting things that help students learn what they are supposed to learn as dictated by states and districts is not as easy. Especially when the focus is getting students to understand and apply the science rather than just being amazed by the cool thing done with the science.
@@JupiterThunder4 What makes it hard for students to learn what they are "supposed to learn" is the breakneck pace at which they have information poured into them and are tested on it. Kids could learn quite intuitively about how everyday objects and cool experiments work, scientifically, if they were allowed to do it slowly and mostly indirectly, through play and playing around with the kinds of things Yeany has lying around. There is so much to be learned by merely talking and thinking about every day activities (such as the geometry lesson that happens when I explain to kids that, because my neighborhood is laid out in grid fashion, there are no shortcuts to my house from the park). Sadly, schools have no patience for this very effective kind of learning; it sacrifices real learning for opportunities to record grades and test scores. I understand that teachers probably don't like the breakneck pace either, but marching kids through it is what they signed up for. That it doesn't work doesn't seem to bother enough of them.
@@meganbaker9116 Assuming ng you're right (that does have some contribution) it doesn't impact what I stated. Bells and whistles do not science teach.
@@JupiterThunder4 Thinking that learning anything outside the information dumping method is "bells and whistles" is exactly what's wrong with American public education.
Really cool demo! I liked all of your variations on the basic idea. Thanks for the video.
Oh thank goodness. You're here. Now I don't have to wonder if I'm weird for enjoying content made for a younger generation.
@@AtlasReburdened hey don't worry about it, this is pure fun basic physics in action. Everybody gets to enjoy it,... there is no age limit on fun!
Very nice! I'm about 45 minutes away from releasing a video on thermoacoustic refrigeration. After that I've planned a follow up with some additional Rijke tube experiments. I've got an enormous 50x4" quartz tube waiting for me to play with. I like your tip on adding wood chips to the screen. I've been thinking about how to get a good smoke flow in the tube for some other filming purposes.
Hi Ben, Nice channel, I enjoyed the refrigeration video you just posted and look forward to seeing viewing more of your work
Bruce, Ben, I spent a lot of time, too much time, trying to make an electric Rijke tube for the Physics Bus. I tried hair dryer coil, toaster coil, wound it in different configurations, nothing worked. Lemme know if you figure it out or get an idea. Interesting that you can change the length without the placement of the mesh needing to change too!
@@ErikHerman construction heat gun?
hello I hope you read this message it would be great to see what happens if instead of doing it with heat you do it by connecting an amplifier at the bottom of the tube and amplifying infrasonic waves to produce powerful longitudinal waves at the upper end ...
Hmmm... Any of y'all try an induction heater to keep the screen hot? That, plus a servo-controlled sleeve could make for an interesting MIDI instrument.
Thank you! Us adults...I mean children need to continue learning everyday.
my wife sometimes refers to me as her 66 year old middle schooler, seems that I never get tired of experimenting with science ideas
Mitch, then learn that you don't say "us adults" you say "we adults".
@@YeanyScience 1) It's NOT the air that vibrates, it's the SCREEN. It's like when you are at the water or having a rain shower, etc... and starts to shake. So, the SCREEN vibrates because of applying HEAT, then it moves (transfer the vibration to) the air and the air "vibrates". 2) Friend, in relation with this pipe: 10:04. You have to put your hands and force it as to generate sound, because the screen inside is loose (so when you tighten it you "fix" the screen inside the pipe and the screen can vibrate the air).
"We" adults
I always enjoy how much Bruce enjoys what he's demonstrating. The way he smiles and laughs with genuine enthusiasm while observing interesting phenomena, even though he's clearly seen them countless times before, is heartening and uplifting. If only we could all be a little more like him.
Welcome back Bruce. Master class as always!
thank you, Ive been busy with some house remodeling projects and had my recording area filled with boxes, nice to be back
I have missed you. You always have such refreshing videos. Please keep posting more!
I've never been here before but I think I'm about to learn something!
His channel is the best
Welcome to class!
Welcome back!
Yes finally your back, welcome back
The three pipes together sound a lot like a train whistle.
Thanks Prof. Bruce you are the first one who explain this very clear.
This guy is fantastic. I'd wager kids are never late to his class and likely hate to leave when class is over.
Friends. That depends on if he has structure in the manner of his preference of manners. When is close to the bell. One of my teachers got offended when my book and pencils went into my back pack while the last few words of the period were delivered.
Absolutely mind blowing. Creative variations of the basic idea. Hats off to you Bruce
Welcome back after seven months!
Glad to see a new video here!
The person in the next room is wondering where the boat sounds are coming from! This is so cool! Thanks!
7:20 incoming train!!
This is fascinating, Yeany!
5:46 candle flame behavior is completely contr intuitive.
Thanks for the lesson!
You're back! Love the science.
These videos never fail to put a smile on my face. Glad to see you again.
When Mr. Yeany gets out it's daytime and when he gets in it's already dark. Wow, that's what I call physics.
Yeany the White returns to us in our time of need.
Beautiful!
Bruce you are awesome, I've missed you...
I love ur videos, world need more passionate people like u.
I learn so much with u, language too. I'm from Brazil. Keep making those master pieces, please!
wonderful to hear that it is helpful
Bruce you are an absolute master
It's always great to take lesson from you sir.
Hey Bruce. I am from Brazil. Your videos are awesome. I use them to entertain and teach my children. Thank you for creating interesting vídeos!
Glad you like them!
I promise to come back to see you so long as you promise to keep making great vids!
Great content as always.
I'd never seen this before in my life. Thanks!
I'm happy to see a new video, I bet your old students really miss you
YAY!! You're back!! Nice to see you post again Bruce. It looks like you're doing well. The three pipe train whistle was my favorite.
Aaaayyy, it's our boy Bruce up again!
Very well done story. Can’t wait to see more of your vids!
Great video once again! I'm now thinking of putting a nichrome wire in there so it can be heated permantently. Then you'd have a usable musical instrument.
I hope to see you post that
Stunning demo, thanks!
The best video on Rijke tube .
Where have you been? We miss you Mr. Yeany so much... I worried about you were ill. Thank Allah you are fine. Best wishes from Turkey.
Thank you Hocam, I truly appreciate your concern. I took some time off to do some long promised remodeling work around our house that I had been putting off. I was not able to use my old school setting due to Covid concerns, and the garage area that I film in was filled with construction material.
@@YeanyScience Thank you Mr. Yeany again. I am science teacher in the middle school. I learn useful experiment and new vision by your videos. You become my teacher too... Take care of yourself. See you soon.😊
Good to see You Sir!
Wow, amazing as usual Bruce!
Good demonstration, as always. Good to see you again. Long time no see
great demo, going to add it to my forth of july playlist. great to see you back and doing videos!
So many ideas. Thanks!
You are alive!! I thought we lost you in 2020.
I'll always be here to see you again.
I'll be back
You're back!
This should be a band instructor science teacher crossover demo in schools. So cool.
As always, interesting, engaging just the best. Easy to follow 👌
you are a great teacher
أنت استاذ ممتاز
You are amazing! One of a kind TH-cam channel. Keep it up
Odysee platform has great channels like this also - always great to learn!
Awesome as always!
Another awesome lesson! Thank you.
So cool! Thanks for sharing
I was unfamiliar with this effect. Thank you for showing.
Awesome sounds!
With some work, you could rig up a bunch of these things and put heating elements inside the mesh. Hook up some controls, and you'd get a really laggy organ!
...and probably a tripped breaker or two :D
You're a genius, man!
03:29 It was never so easy to visualize a thermal current before.
this is so great. I learned something new today.
A true teacher at heart, passing on knowledge to all who will watch. I was wondering if you could add current instead of a flame?
thank you, there are some that have been successful using a heating coil, in this video I was go with the simpler method
1) It's NOT the air that vibrates, it's the SCREEN. It's like when you are at the water or having a rain shower, etc... and starts to shake. So, the SCREEN vibrates because of applying HEAT, then it moves (transfer the vibration to) the air and the air "vibrates". 2) Friend, in relation with this pipe: 10:04. You have to put your hands and force it as to generate sound, because the screen inside is loose (so when you tighten it you "fix" the screen inside the pipe and the screen can vibrate the air).
creo que el efecto que produce el mover la franela en la ultima parte del video es porque el sonido se transmite y vibra por las paredes del mismo tubo no solo por las inferiores y exteriores ...
Came here from recent NightHawkInLight video that referenced this in the description. Quickly skimmed the video titles and descriptions as well, I expect those will be interesting based on how you handled this subject. Also tempting to check my shed, I think I've got some scrap materials around that might just be suitable for this purpose. It wouldn't be efficient at all, but a PTC heating element inside the tube hooked up to a relay which gets enabled by the doorbell or a motion sensor for a few minutes could be neat as well. Depending on the heating element maybe a bit too slow to respond as a doorbell but could still be fun!
One thing will never stop entertaining me though, what the pronunciation of words with a Dutch origin end up getting by speakers of other languages. For example I don't think I've heard any English speakers except one or two museum curators and one linguist say Vincent van Gogh anywhere near correct. But that's fine really, it wouldn't make sense to expect people to know that ij digraph in our weird language.
Truly tremendous.
enjoyed this immensley.. I went to public school in texas where science was secondary to ball chunkin so had very little science classes
8:20 Oh man it sounds like the aliens from Arrival! So Cool!
That was interesting about the downspout and how it was held. I noticed with some 3 and 5 foot lengths of quartz tubing if held with only thumb and forefinger and struck with a rubber hammer for testing knee jerks, they only like to ring when held at certain points too. There are so many things to try with tubes. As an aside if my quartz tubing is rubbed up ad down with a wet cloth, the sound becomes annoyingly loud where it starts to hurt your ears.
There is this other way to make sound from a tube by simply filling it with water as told by John Tyndall.
Musical Flow of a Liquid through a Small Aperture
When the wetted finger is moved round the edge of a glass, the breaking up of the friction into rhythmic pulses expresses itself in music. Savart’s beautiful experiments on the flow of liquids through small orifices bear immediately upon this question. We have here the means of verifying his results. The tube A B, Fig. 113, is filled with water, its extremity, B, being closed by a plate of brass, which is pierced by a circular orifice of a diameter equal to the thickness of the plate. Removing a little peg which stops the orifice, the water issues from it, and as it sinks in the tube a musical note of great sweetness issues from the liquid column. This note is due to the intermittent flow of the liquid through the orifice, by which the whole column above it is thrown into vibration.
How ace! I am going to entertain the kids (and me) by doing this with the flue for my tent stove :)
I guess the reason the tent stove flue doesn’t vibrate is because the air space (fire space) that is the air intake for the flue is already hot. Still makes me wonder why the air vents on the front of the stove don’t contribute to this effect, that would be interesting, a trombone/tent stove musical heat source.
Thanks for your great videos!
I love your videos!
That was amazing,, i really enjoyed it
Great video
thank you. loved it
Wow.!!
I enjoyed it 😊
Missed yuh bruce
thank you, good to be back
Interesting. I wonder if you could use a heating element in place of the blowtorch to heat the steel mesh
I had a student job in a science center, where we had a huge organ of these tubes. Thanks again for a beautiful video! Was thinking if it would work with a full 360 degree bend on them, as long as there was a net height difference?
I'm wondering... if you made the screen to be constantly heated, for example make it from high-resistance wire and plug it in, you could produce a lasting note? And if you had plenty of such pipes, you could make a musical instrument by opening and closing them to enable and restrict the airflow?
Cool, it looks like a pulso with out any valve isn't it ?
Awesome!
If you make holes in the pipe, can you make a self powered flute?
if so, youd probably have to play it with those thick gloves
tried to, got it to work a little but but not well enough to add to the video, I need to play around with it some more, vary the size of the hole etc,
Very cool
There's popular videos of using sticks/tubes for sound by striking them, so it's now time to make a music video like those pipes!
SUCH A GOOD VIDEO!! Let me go pull out one of my downspout pipes!
it's funny how quite often I find ideas in the middle of shooting, so I am never fully aware of what I will end up with
I see a new kind of pipe organ in this... tubes like these with electric heating elements and a cool breeze at the bottom. Traditional pipe organs use some force of air to create whistles. Using this method could possibly require less power though maybe the volume may not be enough. Just a thought.
It's a very happy sound to us too,
Welcome back Bruce, we missed you so much,
does it work if we provide a constant source of heating from an electrical heating coil for example?
will it be possible then to get a continuous sound necessary to build a heat powered organ?
I hope you and your family are doing well,
Stay safe
Thank you Ahmad, we are fine. I've seen a couple videos and at least one website that went with electrical heating, I tried it with nichrome wire and a battery charger, it did not get hot enough, it also need a restriction in the tube, for that mica is suggested
@@YeanyScience Thanks for the info and I hope we'll see your next video soon,
I can't get enough science 😎
Very nice
This is pretty interesting
interesting! have you seen how diameter affects the tone?
I recorded that but didn't make it into the final cut, 3/4 inch 1inch 1.5 and 2 inch all 18 inches long all had the same tone, not identical but really close
There is an end correction term that changes the effective length of a vibrating cylinder of air. It usually isn't much at all. Every open end you have, increases the length by to L = L0 + n*x*D, where D is the diameter, n is the number of open ends (1 or 2), and x is an experimentally determined value of 0.33, as long as lambda/D ranges from 11 to 45, lambda being the fundamental wavelength (twice the effective length for a tube like this).
Hi Bruce! Great video as always, could you explain in a latter video If the diameter of the tube plays a role and if so which? Does one need more energy to make a small tube vibrate?
Hi Jose, yes, I planned on a follow up video and will address that along with some other questions. At the moment I'm working on a few other videos as I wait for supplies that I ordered for part 2
what a master
woah thats awesome!!
I wonder if you use a heating element with a screen to sustain the sound or maybe work with a heating element alone.
This is so cool
What is it that's so cool. I think it is the possibility of a great artifact of someone was to adopt this method of signal generation for musical purposes. But of course it's going to be removed in post processing. Banging video though ☺️ have fun Mr Yeany
Greaat video!
What would happen if the pipe had a single bottom inlet containing the screen and then branched into 3 different length outlets? Would it be possible to make multiple tones with a single screen or would the air tend to rise only through the least restrictive outlet?
Could you use a heating element like the type you find in an electric toaster inside the tube?
I've been trying the heating element out of a hair dryer but it hasn't been successful
Yes!
Anyone else see the still and think Bruce rolling mad blunts
bravo!!!