Recent content by Swamp Thing

In a sense, yes it does. That is, as far as the mechanical models discussed in it go. However, searching for the word "nonlinearity" in the same article will show passages that explain that direct control of a parameter is a more abstract picture, whereas practical implementations often use...

For mechanical examples, I thought it might make sense to use an elongation / compression dependent stiffness. (Rather than commanding the stiffness to change magically by changing a variable called "stiffness" or "K") I will post the model part of the code if I'm not able to fix it in a day...

I was playing with a toy model ( HTML + JS ) involving a mass, spring and damping that lets you vary those parameters using sliders. In the process, I got interested in the idea of varying the stiffness in real time in order to demonstrate parametric amplification. This does work pretty well...

I have found that this channel does a good job of explaining things. I watched this particular video a couple of years ago and it was pretty good.

Crested Phonebill

In the variant at the bottom of page 1, a 2-sphere capacitor drives the current. As a TLDR, does the 'displacement current' in this capacitor contribute anything to the forces on the wire elements?

Something to do with -1/12 ?

Separatrix : A dominatrix who separates clients from all their possessions.

I have installed ngspice (RPi-5), but haven't got around to experimenting with it. However, it's possible to do thought experiments and refine one's ideas while doing other life stuff. This has led me to discard the idea that there should be a momentary increase in disspiation exactly while the...

Yes, that is what I was vaguely trying to articulate. The waveform in baluncore's post is interesting because superficially it looks like a square wave with ringing after each rise/fall. However, the ringing is a growth rather than a decay. This has to mean either (a) the energy in that...

Can you test the hypothesis that there should be a current spike in the positive resistance during the jump from one attractor to another?

Re. the discussion about 'reality' of this simulation. If I understand correctly, the beauty of this class of systems is that it is very robust against what would usually be called simulation errors. Of course the quantitative behavior is in any case highly dependent on initial conditions. But...

Is the energy dissipated, or is the energy transferred to another element than the one whose voltage is plotted?

Dr Chua reminsces about the invention of his circuit: https://www.chaotic-circuits.com/wp-content/uploads/2015/01/THE-GENESIS-OF-CHUAS-CIRCUIT.pdf Page devoted to it (includes an interactive Javascript simulation page and how-to-build info): https://chuacircuits.com/

Yes, I guess I was framing my question like, "Is a needle more like a burger or more like a soprano?" One could make a case for both by stretching each analogy enough. :smile: