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Re:Spirograph by peter_d_sherman on Sunday March 07, 2021 @01:08PM (#26378098)
Here are some interesting-looking Spirograph videos:

Spirograph Designs Compilation:

https://www.youtube.com/watch?v=39vZEvUBeSs

Wild Gears: Triangle Gear 120 in Ring 210 with Birdsong

https://www.youtube.com/watch?v=eC9dGWEc10Q

PDS: Speculation:

There is a relationship between the Spirograph toy -- and Fourier Series:

"But what is a Fourier series? From heat flow to circle drawings (3Blue1Brown)":

https://www.youtube.com/watch?v=r6sGWTCMz2k

PDS: Also, if I were to go for "full crackpot" (which I will, because I usually do! <g>) -- I'd speculate that fields, such as atomic, and subatomic fields (all particles -- because particles are basically all fields which act as particles) are "Spirographic"/Fourier Series in nature...

Yeah, I know...

"You're a crackpot!"

<g>

(Oh, an even more crackpot conjecture... I'd bet you could derive all of the quantum particles... from Spirographic designs/Fourier Series...)

Re:Spirograph by thomasqm on Monday March 08, 2021 @03:09AM (#26383302)
You’re a crackpot! What is an atomic field? Are you referring to the electromagnetic fields generated by subatomic and ionic particles? If so, they are indeed a linear superposition, whose constituents do have wavefunctions, which do include (spherical) harmonics.
Re:Spirograph by reasonabl_human on Monday March 08, 2021 @11:58AM (#26388061)
AFAIK, no such thing as a particle as traditionally discussed exists at the subatomic level. A ‘particle’ is really a quantum excitation of the appropriate field. At least that is how we learned it in particle physics using current field theory and Feynman diagrams
Re:Spirograph by shagie on Sunday March 07, 2021 @10:18PM (#26382008)
The Wild Gears sets ( https://www.wildgears.com ) have enticed me a few time... though so far, I've been able to hold off on buying them for myself.