Hey Bruce, I've been watching your videos for quite a few years for my own entertainment. Now, I'm rewatching for ideas to amaze my little children and get them thinking about science.
@@YeanyScience , i am not sure i understand why would a mirror-reflected light be a pattern? 9:57 Since the mirror is a plane, no matter the vibration underneath, shouldn't the reflected light form just a single point on the wall at a time? Why is the pattern a closed loop?
Thank you Mr. Yeany for making this video! My four year old daughter and I made the laser sound visualizer and it was awesome! Will be using this idea for many avenues including vision board parties and in a preschool classroom teaching that words do have power! ...We also made the sand pendulum! Thanks again for the simple instruction, but very detailed and easy to understand concepts!
Teachers in hallway: *Teacher 1*- Is Bruce Yodeling in his classroom?!? *Teacher 2*- No, He's just screaming at sand. *Teacher 1*-Oh ok, that makes more sense.
I feel like this should be mandatory for all physics teachers at some point in the year. For me, it was bowling ball week while learning about Newton's laws. It didn't help that we were on the second floor.
I'm so glad to see you doing this in the classroom. I wish I would have had you as a physics teacher!! I had to go get an engineering degree to realize how much I love vibrations and acoustics. I'm currently building a speaker box with this concept built in. The issue i'm having, of course, is that the rubber membrane is acting as a passive radiator and making a sound of its own, throwing off the tuning of the box. Great content to get people interested in vibrations!
love your simple and informative experiments. my grandfather who was a math and science teacher would have loved them as well and it's like watching his experiments again. thank your and keep it going
We built the Chladni plates from your other video. We followed it to a T and it just would not form uniform shapes, just random blobs and it wouldn't even work on most frequencies. Over and over we tweaked it and adjusted changing plates, materials, speakers, volume, but, we just couldn't get salt sugar or sand to create those cool shapes or designs. worked on it for about 7 hours. That pushed our time limit to the edge, so we quickly found and built this one and it too, didn't work well. I tightened and loosened the balloon, moved the laser closer/further, vocalized closer/further from the plastic jar but, we couldn't get those crazy and cool shapes from different vocalizations. We even tried different sized balloons and different brands of balloons too. Nothing. Spent way too long tinkering with it. Then while taking a much needed break, my wife put a metal can on the bottom side of the wood and we tried it again and although it worked better, with a few cool lines, it only works a bit and only on certain vocal frequencies! Super frustrated with this project/experiment. Not sure WTH we did wrong or didn't do right but, after 9 hours with this one and 7 hours with the other one, I'm flat out exhausted. Scientifically, emotionally and physically. HA! You MUST''VE tweaked it some in some way to get it to respond so well. I wish I knew what you did to make it work so well, because it was very responsive/reactive to your vocalizations but, not ours. He had to take it in to school today anyway because there was no time left. Im guessing there were some tweaks that you must've made and I wish you would have gave some suggestions that might have helped to get better response.
Inspiring stuff good sir ..... Am reminded of the wonderful Prof. Julius Sumner Miller showing beautifully geometric patterns achieved on a steel plate with a violin bow .....
1×Bucket & binbag✅ 1×Little mirrors.....✅ 1×Laser(saw)........✅ Amp,Speakers.......✅ Very good video this ! Real DIY, today even you can start experimenting straight away! ((If you got a bit of "e-waste hoarding" like me going on there is a laser build in somewhere. Got mine out of old saw table that i found .
That was amazing. I loved watching that. I feel like making my own now and doing a lot of experiments. I can already think of a lot of applications for it.
Intuitively, that thought seems absolutely in line with "it should definitely, probably, maybe!" Lol. Seeing as how those super small microphones resemble speakers it really seems like it should be possible. Along that same thought process I offer you these thoughts, regarding the relationship between sound, and light, how they exhibit the same characteristics relative to each form stemming from their very natures... How they differ, and newer further viewable suggestions from the following perspective... Light and sound are very different things, but they are still rooted in the same existential reality, and thus they are still very much alike, and exhibit the same phenomenon... With a bit of thoughtful focus we can suggest possibilities that may not have been previously thought about, or understood, but at the very least, it's extremely interesting, and deepens the understanding of all related topics. One way we begin to achieve the aforementioned thought process is to frame the "Doppler effect," heard with sound, next to the "red-blue spectral shift," as witnessed with the direction of shift of absorbed bands found in spectrograms when the source of such light is moving towards the observer, or away from the observer, just as with the Doppler effect with the source of the sound either moving towards, or away from the observer. This extrapolation of a commonly witnessed phenomenon with sound, the Doppler effect, into its counterpart that ought to be able to be witnessed with light, can be bridled to maybe glimpse a peek into other possible abilities that light may harness, of which we are unaware. Light doing things, exhibiting characteristics, or behaviors like sound begs other questions, which is really the whole point of my unsolicited, long-winded ramblings.... The difference in the speed of sound, and light can lead to situations seen in an instant from afar, and yet some time later, hear the sounds resulting from that same event..... So, if echoes allow us to re-witness, and hear again, some moment in time, at a later time, then what would be the counterpart that we could witness with light waves? Just reflections, mirrors.... Is it possible to use any other extrapolated cognitive avenues to shed light in unknown corners? I feel like sound is just really slow light... Physical things are the result of light slowing down enough to exist physically, bouncing off of things, and other things, and other light, etc... Fun thoughts.... Enjoy!
This has actually been done. Spies have developed laser microphones to hear what people are saying by interpreting the change in a laser reflected off a window that is vibrating slightly due to the sound of the voices inside the room. I think high speed photography has also been able to record minute changes due to vibrations from speech on something like an aluminum can and then processed to hear a voice. Over a material of uniform composition and thickness (unlike his plastic bag, which is thinner in spots that were plastically deformed when he stretched the bag taught, and thicker in spots that didn't get deformed as much) the nodes and antinodes should show up in predictable symmetrical patterns based on the acoustic properties of that material's composition and thickness, and the diameter of the drum cylinder. There will be a clear resonance frequency, or harmonic frequencies, and overtone harmonic frequencies that are standing waves that are split halved and halved again. For monophonics this would be academic . Polyphonics and vocal effects on the material will be complex, but could be analyzed to a point where you could predict the sound that a pattern is making, given a drum head material that could provide enough granularity or resolution coupled with instrumentation capable of recording that resolution. His drum and laser produce messy, but enigmatically beautiful patterns because the plastics in each are not a uniform thickness. A precisely manufactured material would reveal a symmetrical and concentric pattern that I think you'd find more comprehensible.
@@matthewbryant3992 now that is what i wanted to hear! Thank you for your lovely explanation. I will now further and include this into my product developmental research.
@@roknovak303 No prob! I think you deserved a better response than you had received before, because you're definitely asking the right questions if the answers involve spy gadgets! 😅 But seriously, this is a great educational video because you can visualize sound in a fundamental way, and it's simple enough to reproduce DIY at home... But also, the reason it's so compelling and mysterious is because of all the follow-up questions it inspires. I didn't think of it before, but microphones are essentially speakers in reverse. Instead of producing sound from a signal by vibrating, they absorb vibrations to produce a signal... Which is kinda exactly what's happening in this video: his drum is absorbing vibrations... If you wanted to make that drum a microphone, you'd have to figure out how to answer the question : how could I take those patterns and encode or turn them into a signal that could be recorded. This is almost the exact question you were asking! So it sounds like you might be asking how a microphone works! Which is a great thing to ask without knowing!
Very easy to understand and beautifully explained the difficult phenomena in physics....!!! Thanks a million for making viewers enjoy the sounds and vibrations....👍👌🤝🙏🤠
Thanks Steve, I had a lot of fun with this one, ( well, that's actually true with all of these) the shots were pretty much first take videos as I was experimenting with the bucket, so the next step is to we see how we can improve it on it.
Wow, I can scarce believe how amazing this was to watch, I want to teach Year 3 sound just for doing this damn lesson now... it would blow their minds just like it's just blown mine!
This is amazing, I've doodled with lasers before, but I built my things with rotating mirrors in LEGO :D I will definitely have to do this to have as a music visualizer here at home! Super neat project :O And so simple as well, nuts! Cheers :)
Sound is essentially the source of everything in the universe. Sound organises matter into specific shapes. The difference between two cultures is sound. That is why the people of two cultures behave differently. When you are inside your mothers womb the first sense that you develop is the sense of sound. The sounds that you heard when you were inside her womb are what have designed your mental and physical being.
@@eldarsadykov Then why is it that the sign languages of the deaf and dumb people from different cultures are different? Why isn’t there any uniformity. And no matter how much you try to bring uniformity their cultural nuances find a way in…
This has answered quite a few question however creating quite a lot more.... excellent RUclips video.... EXCELLENT!!! Try using glass to amplify the sound to levitate and object or use the output of the sound to cut thru an object. This will help to answer the building of the pyramids... LOL. sound/light/magnetism/specific frequencies.....
Thanks for the video. It's so great to demonstrate the sound in visual way. I like the black trash bag covered bucket to play as Chladni plates. Could you please show me how to stretch the bag so smooth? Thanks
Another epic video. I am an ISO level 4 vibration analyst. If you are close I would like to supplement one of your lessons or at least attend. You are doing great work.
You could try to make a sequence of the same note in increasing (and decreasing) octaves. Maybe in some cases the patterns will be a explicitly doubled (or halved) version of the anterior.
One thing that I find particularly interesting is that the mirror probably amplifies more in the "low energy" areas than in the "high energy" areas. The laser beam is deflected by changes in the surface angle rather than by translational displacement. The standing wave nodes are the places where the mirror would affect the laser beam the most. And these are of course the same spots where the sand collects because there is less translation.
Hi Tom, everything beyond hitting the boards together was discovered as I was making the video so I still have quite a few questions about it. I was wondering where would be the position to place the mirror on the the membrane surface. At the moment I'd say there is no best spot since it appears it would depend on the frequency
I've been looking for DIY Chladni plates for hours on youtube.. your bucket+trash bag is the best all night!
Hey Bruce, I've been watching your videos for quite a few years for my own entertainment. Now, I'm rewatching for ideas to amaze my little children and get them thinking about science.
good luck, there should enough ideas to keep you busy for a while
It just fascinates the heck out of me how the tones create those consistent visual patterns.
And if you look at art created by ayahuasca shamans you'll find the same patterns. Super cool.
Acoustic waves interacting. Imagine the effects of EM radiation or even gravitational wave interactions on relevant matter :)
They're so pretty as well
I see the walls of Jericho
Mr Bruce, you are so inspiring 👏🏻👏🏻👏🏻 I am a physics teacher from Turkey, I love watching your videos, thanks for sharing 🙋🏼
Hello Guzin, thank you, nice to hear from someone in Turkey
@@YeanyScience hello i tried to make it but it's not working like that, is it a special laser or mirror ?
@@YeanyScience , i am not sure i understand why would a mirror-reflected light be a pattern? 9:57
Since the mirror is a plane, no matter the vibration underneath, shouldn't the reflected light form just a single point on the wall at a time? Why is the pattern a closed loop?
Thank you Mr. Yeany for making this video! My four year old daughter and I made the laser sound visualizer and it was awesome! Will be using this idea for many avenues including vision board parties and in a preschool classroom teaching that words do have power!
...We also made the sand pendulum!
Thanks again for the simple instruction, but very detailed and easy to understand concepts!
This was such a great example of clear, practical scientific demonstration- thank you for your excellent work Mr Bruce!! 💪🏼
Teachers in hallway:
*Teacher 1*- Is Bruce Yodeling in his classroom?!?
*Teacher 2*- No, He's just screaming at sand.
*Teacher 1*-Oh ok, that makes more sense.
LOL, you pretty much nailed it, the teachers around me are pretty good sports and have accepted me doing things like this
boys will be boys when playing in a sand box.
or screaming at it ;)
boabab95 HAHAHAHA classic....they are probably used to it 🤪
I feel like this should be mandatory for all physics teachers at some point in the year. For me, it was bowling ball week while learning about Newton's laws. It didn't help that we were on the second floor.
I'm so glad to see you doing this in the classroom. I wish I would have had you as a physics teacher!! I had to go get an engineering degree to realize how much I love vibrations and acoustics. I'm currently building a speaker box with this concept built in. The issue i'm having, of course, is that the rubber membrane is acting as a passive radiator and making a sound of its own, throwing off the tuning of the box.
Great content to get people interested in vibrations!
thanks, not sure what to recommend for you speaker but keep trying, good luck with it
Bruce you're awesome!
Such a great teacher! Thanks for the projects. I can make them in my school too! A grand salute to you!
Never get tired of videos visualize the invisible :)
Holy shit that's amazing
Sounding the Letter O and the Word Om would have given you An Amazing Geometrical Pattern..Thanks for the Demo, Much Love and Peace 🤜🏼❤🤛🏿
more so than big bruce
so simple yet so education and fun. your time and effort are very appreciated. thank you thank you thank you
Mr. Yeany, I don't think you could know what a difference this video has made for me. With my infinite thanks.
glad you liked it
The salt visuals really amazed me. I had no idea. Amazing!
Always a delight to click on a random video because of the thumbnail/title and it turns out to be a Bruce Yeany vid!
Awesome videos Mr. Yeany. Wish I had you as a science teacher. I hope your students appreciate you.
Mr Bruce, great and amazing video and its very very interesting because I like music and physics. thank you very much for this.
So... freaking... amazing!!!!
Watched loads of your vids now, Everything I want to have go at 😁. Its great to have these demonstration vids to learn from. Epic teaching style.
You the man Bruce! Your example is the best 💣
Now I know what my neighbour is doing, he's just creating sound with sand. I thought he was calling out to me.
I love how simple your devices are
love your simple and informative experiments. my grandfather who was a math and science teacher would have loved them as well and it's like watching his experiments again. thank your and keep it going
Bruce thanks for this video I always love your videos you're a amazing teacher
Best videos EVER! I love that these are so simple and so amazing. thank you so much for making these!!!!
We built the Chladni plates from your other video. We followed it to a T and it just would not form uniform shapes, just random blobs and it wouldn't even work on most frequencies. Over and over we tweaked it and adjusted changing plates, materials, speakers, volume, but, we just couldn't get salt sugar or sand to create those cool shapes or designs. worked on it for about 7 hours. That pushed our time limit to the edge, so we quickly found and built this one and it too, didn't work well. I tightened and loosened the balloon, moved the laser closer/further, vocalized closer/further from the plastic jar but, we couldn't get those crazy and cool shapes from different vocalizations. We even tried different sized balloons and different brands of balloons too. Nothing. Spent way too long tinkering with it. Then while taking a much needed break, my wife put a metal can on the bottom side of the wood and we tried it again and although it worked better, with a few cool lines, it only works a bit and only on certain vocal frequencies! Super frustrated with this project/experiment. Not sure WTH we did wrong or didn't do right but, after 9 hours with this one and 7 hours with the other one, I'm flat out exhausted. Scientifically, emotionally and physically. HA! You MUST''VE tweaked it some in some way to get it to respond so well. I wish I knew what you did to make it work so well, because it was very responsive/reactive to your vocalizations but, not ours. He had to take it in to school today anyway because there was no time left. Im guessing there were some tweaks that you must've made and I wish you would have gave some suggestions that might have helped to get better response.
Inspiring stuff good sir .....
Am reminded of the wonderful Prof. Julius Sumner Miller showing beautifully geometric patterns achieved on a steel plate with a violin bow .....
Thank you , Prof. JS Miller has been a big inspiration in my teaching
Wow, I definitely need to built one of this ! It's awesome !
I gotta say, the digital clock at 1:40 in the top right looks so mesmerising when shot with your camera.
Amazing experiment! Even if one sucks in the science department, one cannot say this isn't awesome! Thanks for sharing, Bruce!
this is just amazing to look at, great video
1×Bucket & binbag✅
1×Little mirrors.....✅
1×Laser(saw)........✅
Amp,Speakers.......✅
Very good video this !
Real DIY, today even you can start experimenting straight away!
((If you got a bit of "e-waste hoarding" like me going on there is a laser build in somewhere. Got mine out of old saw table that i found .
That was amazing. I loved watching that. I feel like making my own now and doing a lot of experiments. I can already think of a lot of applications for it.
Such an inventive experiment. Thank you so much!
Is it possible to reverse the process and make sound from patters i wonder how s specific pattern would sound
Intuitively, that thought seems absolutely in line with "it should definitely, probably, maybe!" Lol. Seeing as how those super small microphones resemble speakers it really seems like it should be possible. Along that same thought process I offer you these thoughts, regarding the relationship between sound, and light, how they exhibit the same characteristics relative to each form stemming from their very natures... How they differ, and newer further viewable suggestions from the following perspective...
Light and sound are very different things, but they are still rooted in the same existential reality, and thus they are still very much alike, and exhibit the same phenomenon... With a bit of thoughtful focus we can suggest possibilities that may not have been previously thought about, or understood, but at the very least, it's extremely interesting, and deepens the understanding of all related topics.
One way we begin to achieve the aforementioned thought process is to frame the "Doppler effect," heard with sound, next to the "red-blue spectral shift," as witnessed with the direction of shift of absorbed bands found in spectrograms when the source of such light is moving towards the observer, or away from the observer, just as with the Doppler effect with the source of the sound either moving towards, or away from the observer. This extrapolation of a commonly witnessed phenomenon with sound, the Doppler effect, into its counterpart that ought to be able to be witnessed with light, can be bridled to maybe glimpse a peek into other possible abilities that light may harness, of which we are unaware.
Light doing things, exhibiting characteristics, or behaviors like sound begs other questions, which is really the whole point of my unsolicited, long-winded ramblings.... The difference in the speed of sound, and light can lead to situations seen in an instant from afar, and yet some time later, hear the sounds resulting from that same event..... So, if echoes allow us to re-witness, and hear again, some moment in time, at a later time, then what would be the counterpart that we could witness with light waves? Just reflections, mirrors.... Is it possible to use any other extrapolated cognitive avenues to shed light in unknown corners?
I feel like sound is just really slow light... Physical things are the result of light slowing down enough to exist physically, bouncing off of things, and other things, and other light, etc...
Fun thoughts.... Enjoy!
@@jarredmattingly5369 worth a try
This has actually been done. Spies have developed laser microphones to hear what people are saying by interpreting the change in a laser reflected off a window that is vibrating slightly due to the sound of the voices inside the room. I think high speed photography has also been able to record minute changes due to vibrations from speech on something like an aluminum can and then processed to hear a voice.
Over a material of uniform composition and thickness (unlike his plastic bag, which is thinner in spots that were plastically deformed when he stretched the bag taught, and thicker in spots that didn't get deformed as much) the nodes and antinodes should show up in predictable symmetrical patterns based on the acoustic properties of that material's composition and thickness, and the diameter of the drum cylinder. There will be a clear resonance frequency, or harmonic frequencies, and overtone harmonic frequencies that are standing waves that are split halved and halved again. For monophonics this would be academic . Polyphonics and vocal effects on the material will be complex, but could be analyzed to a point where you could predict the sound that a pattern is making, given a drum head material that could provide enough granularity or resolution coupled with instrumentation capable of recording that resolution.
His drum and laser produce messy, but enigmatically beautiful patterns because the plastics in each are not a uniform thickness. A precisely manufactured material would reveal a symmetrical and concentric pattern that I think you'd find more comprehensible.
@@matthewbryant3992 now that is what i wanted to hear! Thank you for your lovely explanation. I will now further and include this into my product developmental research.
@@roknovak303 No prob! I think you deserved a better response than you had received before, because you're definitely asking the right questions if the answers involve spy gadgets! 😅 But seriously, this is a great educational video because you can visualize sound in a fundamental way, and it's simple enough to reproduce DIY at home... But also, the reason it's so compelling and mysterious is because of all the follow-up questions it inspires.
I didn't think of it before, but microphones are essentially speakers in reverse. Instead of producing sound from a signal by vibrating, they absorb vibrations to produce a signal... Which is kinda exactly what's happening in this video: his drum is absorbing vibrations... If you wanted to make that drum a microphone, you'd have to figure out how to answer the question : how could I take those patterns and encode or turn them into a signal that could be recorded. This is almost the exact question you were asking! So it sounds like you might be asking how a microphone works! Which is a great thing to ask without knowing!
Very easy to understand and beautifully explained the difficult phenomena in physics....!!! Thanks a million for making viewers enjoy the sounds and vibrations....👍👌🤝🙏🤠
The teacher I never had.
Bruce - Great job on this video! Love the screaming Chladni patterns.
Thanks Steve, I had a lot of fun with this one, ( well, that's actually true with all of these) the shots were pretty much first take videos as I was experimenting with the bucket, so the next step is to we see how we can improve it on it.
Wow, I can scarce believe how amazing this was to watch, I want to teach Year 3 sound just for doing this damn lesson now... it would blow their minds just like it's just blown mine!
Thank you Mr Bruce you always make my brain so happy! :-)
You make my most favorite videos. You turn complex science into fun that inspires all❤
thank you Jami
Thank you, Bruce!
What an inspiring educator.
I love you! Thank you so much for making this in such a simple way!
0:30 That moment when you can't stop playing with the new toy.
Takeupa
- Let's get starteeeeeed!
- All right.
....
*This thing is so funny*
- Let's go.
😂
Best and simplest video.Great job!
Love this video!
Thank You Bruce!
Very inspiring and very nice to use common items to create the experiments!
simple and enjoyable to watch, please create more videos.
Ahhh it was the perfect opportunity to play the Close Encounters of the Third Kind theme :D
Good stuff! Thank you for taking time to share
If you were a teacher at my school I wouldn't have dropped out, you are amazing lol.
FANTASTIC, VERY NICE.........!!!!!
This is awesome! I'm going to try this in my classroom.
You're on your way on using the ancient techniques of church builders, very nice
Fantastic video. Thank you for sharing.
How fantastic is it and also it is in audible range
ma shaa Allah ..thats amazing
This is amazing, I've doodled with lasers before, but I built my things with rotating mirrors in LEGO :D I will definitely have to do this to have as a music visualizer here at home! Super neat project :O And so simple as well, nuts! Cheers :)
Sound is essentially the source of everything in the universe. Sound organises matter into specific shapes. The difference between two cultures is sound. That is why the people of two cultures behave differently. When you are inside your mothers womb the first sense that you develop is the sense of sound. The sounds that you heard when you were inside her womb are what have designed your mental and physical being.
This is some exemplary New Age esoteric pseudoscience bull crap.
@@eldarsadykov Then why is it that the sign languages of the deaf and dumb people from different cultures are different? Why isn’t there any uniformity. And no matter how much you try to bring uniformity their cultural nuances find a way in…
Omg this is awesome, I wanna build this
Omg you getting me so much ideas for my class. Awesome
Sounds like you had a lot of fun making this video!
Nice! Keep it up!
Can you record the laser moving with a high speed camera?
interesting idea, it would slow the figure down to a dot moving on the wall
Yes! I was about to suggest that too. Side by side with the mirror and some smoke perhaps? :)
CL0WN FAC3 put long lighting time in settings
+La Wa That's not what he meant.
But cameras are made for taking pictures, not moving around. ;P
This has answered quite a few question however creating quite a lot more.... excellent RUclips video.... EXCELLENT!!! Try using glass to amplify the sound to levitate and object or use the output of the sound to cut thru an object. This will help to answer the building of the pyramids... LOL. sound/light/magnetism/specific frequencies.....
I used to have the same keyboard like the one you use when I was a kid. It has the best pre-recorded beats ;D
Very very cool. Awesome channel.
i love you
this is awesomely amazing and wonderful!
thank you
please never stop making these awesome videos
your singing made my day
Absolutely awesome.
Insane! That is so cool!
Great! I am so doing this with my kids!
You are incredible!
well done explanation of one of my favorite topics
excellent vid. and very impressive singing!
Very good this demonstration, thank you!
Thanks for the video. It's so great to demonstrate the sound in visual way. I like the black trash bag covered bucket to play as Chladni plates. Could you please show me how to stretch the bag so smooth? Thanks
Reminds me of those "oscilloscopes" that were in 1970's amplifiers
I was thinking it's pretty much the same thing, but with a laser beam on a wall instead of an electron beam on a CRT screen.
You sir are cool! I enjoy these vids very much!
This is phenomenal
Simply amazing!
Another epic video. I am an ISO level 4 vibration analyst. If you are close I would like to supplement one of your lessons or at least attend. You are doing great work.
You're such a cool teacher!
Thank you Jonathan
This is fantastic!
Sir, you are an inspiration. Greetings from a couple of artists in Portugal ;)
You could try to make a sequence of the same note in increasing (and decreasing) octaves. Maybe in some cases the patterns will be a explicitly doubled (or halved) version of the anterior.
Good lord I love your videos... This is so creative and interesting!
thank you
really awesome demo thanks
This is awesome! Thank you!!
Another great educational video, Thanks!
One thing that I find particularly interesting is that the mirror probably amplifies more in the "low energy" areas than in the "high energy" areas. The laser beam is deflected by changes in the surface angle rather than by translational displacement. The standing wave nodes are the places where the mirror would affect the laser beam the most. And these are of course the same spots where the sand collects because there is less translation.
Hi Tom, everything beyond hitting the boards together was discovered as I was making the video so I still have quite a few questions about it. I was wondering where would be the position to place the mirror on the the membrane surface. At the moment I'd say there is no best spot since it appears it would depend on the frequency
Thanks for the follow-up. You remind me of my high school physics teacher. Great guy.
awesome, you are a great teacher
Thanks, just found this. Now I know how to get patterns for my artwork! :o)
Its really Great experiment .. you are Good Teacher .. thank u.
Love this video! Gonna give it a try
Loved your video
Very nice sound
Thank you. I will try once again