@@NickLucid Well, that's okay, he's really good at this stuff. Also, he's got a bunch of clones, so you can partner with at least one of them. I know he's also looking to partner with someone so you're as good as anyone. I mean, maybe not quite as good as him, but you're getting there. :-)
When I was about eleven years old my father brought home a military surplus oscilloscope. It had no x-axis scan function. I used to wire the two sides of a stereo amplifier to the x and y inputs, then speak into a microphone. The results were remarkably similar to the patterns produced by Nick's (so clever!) laser and mirror.
Hi Nick Lucid, I tried this model for a physics experiment project. It works great and the result is awesome. For the research part of my project, do you mind answering a few of these questions? 1. Can you briefly explain the physics behind this demonstration? 2. Would the shape of the can cutout effect the light pattern? 3. Why does the light pattern change depending on the frequency? If you could answer these for me it would be greatly appreciated as it is for my school project. Thanks!
1. On a surface, the resonances are called "modes of vibration" or "normal modes." I'm not really an expert on surface waves, so I don't want to say much more. en.wikipedia.org/wiki/Normal_mode 2. Yes, the normal modes are shape dependent. A circle is the easier shape to model though. It's also the best shape to get a rubber sheet onto without tearing it. en.wikipedia.org/wiki/Vibrations_of_a_circular_membrane 3. The pattern is usually complicated, but becomes simple when you hit a normal mode for the rubber. Because the mirror is glued to the rubber, it must move with the rubber. 4. Yes, any sound should create laser patterns, including music. However, you might have a harder time finding the normal modes with the music.
what if you had a different shaped opening to put the balloon over, like a star cookie cutter or something. would that change the way it looked projected?
+PMurfy21 It would definitely change the pattern. The patterns are based on the "modes of vibration" of a circular membrane. You're going to have a hard time keeping the rubber from ripping if you have any corners though.
+Patrick Daigle The mirror has to be placed so that it resonates with the rubber membrane. It doesn't have to be *specifically* 1/3r, but that's the distance I found works the best.
@MrErkmer - PixR ~ 3xR, my best guess as Pi always comes around when circles are involved, and they are involved even when you think they are not. I'm also curious anyhow.
I couldn't possibly explain it all in a comment, but they're called "Modes of Vibration." The mirror moves differently depending on what part of the surface waves it happens to be on. You get a simple shape if it's on a part that vibrates less. Here's more info: en.wikipedia.org/wiki/Vibrations_of_a_circular_membrane
+jackie myers The details would take a whole video, but here's the basic idea: When you speak into the can, the sound waves are transformed into surface waves on the rubber balloon. The mirror vibrates with the rubber and moves the laser dot around on the wall. If you sing at just the right frequency (the resonances of the rubber), the mirror will move in a more regular way and you get a cool shape. If you sing at some other frequency, then it will look like a mess because the mirror is vibrating all over the place.
You need to talk to the Science Asylum guy and have him do a video on this. This is amazing.
Ha! It'd have to be a really deep dive into how wave behave on 2D surfaces.
@@NickLucid Well, that's okay, he's really good at this stuff. Also, he's got a bunch of clones, so you can partner with at least one of them. I know he's also looking to partner with someone so you're as good as anyone. I mean, maybe not quite as good as him, but you're getting there. :-)
When I was about eleven years old my father brought home a military surplus oscilloscope. It had no x-axis scan function. I used to wire the two sides of a stereo amplifier to the x and y inputs, then speak into a microphone. The results were remarkably similar to the patterns produced by Nick's (so clever!) laser and mirror.
This is Awesome
Hi Nick, just subscribed to this channel too. I like all the random stuff also. BTW your a really excellent presenter.
Thanks! This is definitely the channel I put all my random thoughts on.
Very cool. It's really cool to see how you get stable patterns in both x and y directions on the surface
Wow amazing
Put the mirror directly on the very center of a speaker (you may need to remove some casing) and enjoy this effect to your favorite music.
Hi Nick Lucid, I tried this model for a physics experiment project. It works great and the result is awesome. For the research part of my project, do you mind answering a few of these questions?
1. Can you briefly explain the physics behind this demonstration?
2. Would the shape of the can cutout effect the light pattern?
3. Why does the light pattern change depending on the frequency?
If you could answer these for me it would be greatly appreciated as it is for my school project. Thanks!
Also one more question. Would music work with this experiment? Appreciate it and I also credit your video.
1. On a surface, the resonances are called "modes of vibration" or "normal modes." I'm not really an expert on surface waves, so I don't want to say much more.
en.wikipedia.org/wiki/Normal_mode
2. Yes, the normal modes are shape dependent. A circle is the easier shape to model though. It's also the best shape to get a rubber sheet onto without tearing it.
en.wikipedia.org/wiki/Vibrations_of_a_circular_membrane
3. The pattern is usually complicated, but becomes simple when you hit a normal mode for the rubber. Because the mirror is glued to the rubber, it must move with the rubber.
4. Yes, any sound should create laser patterns, including music. However, you might have a harder time finding the normal modes with the music.
This is fucken awesome!
Awesomee!
Hey Nick have you ever made a vid about how to make a youtube vid?
I have not. People have requested an editing/animation timelapse, but I've never gotten around to it.
simply superb!!!!!
that's f'n cool
I totally agree with Awkward M
Genial demostración!!!
"See, it's empty on that end" fucking lol
what if you had a different shaped opening to put the balloon over, like a star cookie cutter or something. would that change the way it looked projected?
+PMurfy21
It would definitely change the pattern. The patterns are based on the "modes of vibration" of a circular membrane. You're going to have a hard time keeping the rubber from ripping if you have any corners though.
cool thanks!
SCIENCE. FUCK YEAH.
Why do you have to put the mirror 1/3r from the edge?
+Patrick Daigle
The mirror has to be placed so that it resonates with the rubber membrane. It doesn't have to be *specifically* 1/3r, but that's the distance I found works the best.
@MrErkmer - PixR ~ 3xR, my best guess as Pi always comes around when circles are involved, and they are involved even when you think they are not. I'm also curious anyhow.
can you explain what factors affects the shaps that are made please?
I couldn't possibly explain it all in a comment, but they're called "Modes of Vibration." The mirror moves differently depending on what part of the surface waves it happens to be on. You get a simple shape if it's on a part that vibrates less. Here's more info:
en.wikipedia.org/wiki/Vibrations_of_a_circular_membrane
How the heck does the work?
I really should make a video on this one of these days. I just need access to a high-speed camera.
Will it work using a regular laser from amazon?
The type of laser shouldn't matter. A laser pointer should be fine. That big thing is just the one I had at the time.
could you explain the physics behind this video?
+jackie myers
The details would take a whole video, but here's the basic idea: When you speak into the can, the sound waves are transformed into surface waves on the rubber balloon. The mirror vibrates with the rubber and moves the laser dot around on the wall. If you sing at just the right frequency (the resonances of the rubber), the mirror will move in a more regular way and you get a cool shape. If you sing at some other frequency, then it will look like a mess because the mirror is vibrating all over the place.
+Nick Lucid thank you that was very helpful
back then, u replyrd all textes...
whats this called
carnagelordz I don't think the device has a name. Sorry.
+Nick Lucid
If I were to name it, It would be a Photosonographer
Steven Brown
Excellent name!
Very nerdy.
Is this fake or real
It's 100% real. Steve Mould did a video about it too: ua-cam.com/video/C-V1uXeyGmg/v-deo.html
Grate all I need is a Lazer, I'll go look in the closet
Looks like string & electric charge therioy combined