Knotty Analog Oscilloscope Art 

i think i just witnessed the most nerdy thing on this channel and i like it

a piece of string walks in to a bar and tries to order. the bartender says, sorry buddy we don't serve pieces of string in this bar. upset, the string leaves, and around the corner he straightens himself up, ties himself into a knot and parts his hair. when he walks back in the bartender says hey aren't you that piece of string from earlier? to which the string responds: I'm a frayed knot!

When I was a graduate student we used the "crazy contraption" to take polaroids of the scope showing our measurements and then tape them in the lab handwritten logbook.

I’m a professional laser display artist with 30 years experience, this is one technique in how laser shows were made. Even now the signal from controller through to the galvanometers (scanners) is 100% analogue. Plenty of us still play with lissajous these days but we are down to 12 or 16 bit resolution digital to analogue converters.

The knots drifting out of phase over time almost looks like a 3D rotation of sorts, revealing that they aren't actually knots. I wonder how much harder this becomes if you basically make this "drifting out of phase" motion be *actual* 3D rotation projected to 2D, and it simply looks like you look at the knot from different perspectives.

THIS IS AWESOME i'd love to understand further the inner workings of how oscilloscopes transpose an electron to visual display now.

I'm convinced that being successful on youtube is 50% skill and 50% how nice your voice sounds

Awesome stuff. This makes me want to resurrect an old project I had going years ago which was this sort of thing, but more like a modular synth. Endless fun!

Profoundly fascinating, thank you, Matthias, for sharing your process! Though I have a minimal understanding of math and electronics, you and Henry made this dark art surprisingly intuitive. And as a musician, once you described a voltage controlled oscillator, my first thought was: that's FM synthesis! I also dig the concept of knotty analog scope art on polaroid. Prost!

I enjoy the sounds of the shapes

Awesome !! Stunning material, well done 👏🏻👏🏻👏🏻

This adjustment makes me think of the Star Trek TNG episode "Where No One Has Gone Before"...

More fun and educational than I thought! Appreciate the short intro to the integrator circuit (is it that easy? I suspect not :p I need to look more into that!).

Looks great

Amazing video!

this is cool as hell... crazy circuits im sure.

love you Henry!!!

Chapeau l'artiste!

Because i teach some morpholocal and basic topological stuff in Paris Arvhitecture school some times ago… and because i am an artist too… this sounds crazy good !!!

Wow I am really impressed by all of your works watching every video in my free time! Are you really Escher on streoids???

It’d be helpful to see the circuit diagram with the clamping diode etc - block diagrams are in the description, and the standard integrator in the video; but it’d be nice to see the nitty gritty level, connecting the dots - i.e. the black boxes! (I can probably work it out… but it’s a nice thing to have it linked to. I’m wondering if I’m missing a trick as it seems to be one adjustment for speed in the unknot example…. But that would mean the two integrators being changed together?… easy enough with a dual-ganged variable - but if I’m missing something clever there, I’d like to know). Analogue computing is a very cool thing - you can do a nice A-level demo of resonance and damping with an LC network.

I think the analogue multiplier he’s talking about uses Gilbert’s linearized transconductance technique, also know as a Gilbert Cell.

Only the unknot and the trefoil worked through the video, and even the trefoil was somewhat distorted. Looks more like eq than audio compression to my eyes though. I recall playing that oscilloscope art piece with mushrooms through youtube to my scope, and that worked better while also being more complicated.

So cool 🎉

I managed to get a TV picture on an oscilloscope. My electronics teacher didn't know that was possible. He even dragged two other teachers in to show them.

Thank you for this video - very nice! But the schematics aren't enough for me, I need more detail and exact diagram, since I'm new to electronics. I can assemble just about any circuit as long as I have exact instructions. Is there a way to provide better instructions - possibly put it on instructional website? And we can start with a simple generator and build upon that?

knottiest video on youtube

if you re-shot this on film as well you could do analog showings!

Those analog multiplier, are they AD633?

3 dimension in a 8 dimension reflecting cone that give off vibration not sure why

I had a laser running off audio/analogue signals to draw 4d objects, starting with a loop of 4 channels running though the x,y,z,w coordinates of a hypercube and doing projection calculations to convert them into x,y screen space using analogue synths. it's not knots but thought it was relatable. and can you have knots that exist in either 3D or 4D but knot the other? ru-vid.comBrJyTqH5izQ

Matthias looks like a Hans Zimmer brother :)

Coolies. Colour and vibr9

With enough time he'll either make up an excuse to have a Euro-rack setup put together in the lab, or perhaps be doing similar work to that of Jerobeam Fenderson?

This guy is like matthias wandel.

"The knotty professor"

I want to see a Heavy Metal song in this.

What's crazy is that 40 years ago, analog tech would have been the only way available to produce this. We're not that far removed from the analog world, but digital has overtaken nearly every technology since.

🇧🇷

knot😈

Too young to understand half of it, but it looks awsome

Why do you do premiers if all of it was recorded in advance? Also yes, it works even after YT compression.

Hey doctor the things acting up

I'm going to go ahead and value the photograph at $15,582 USD.

You can tell the camera man is struggling to understand this lol

This video is definitely just a prelude. I've seen how Henry works.. watch out @jerobeamfenderson1