geofex.com - Impedance :
What is it and why does it do all those terrible things to you?
Signal Processing and Electronics
Electronics Theory
Electronic Components
The Electronic-Hydraulic Analogy :
Fluid mechanics and hydraulic circuits to build intuition for electronics
Guitar Pedals
Lab Notes: The Bazz Fuss Pedal :
Notes on my understanding of the Bazz Fuss circuit
Transform Algorithms
3b1b - But what is the Fourier Transform? A visual introduction. :
The first video I'd recommend anyone watch on the Fourier Transform
Seeing Circles, Sines, and Signals - The Fourier Transform? :
Excellent explanation packaged in a masterclass of pedagogical visual design
weitz.de - The Discrete Cosine Transform :
Real-valued relative of the Fourier transform, used in JPEG compression
yt/reducible - The Unreasonable Effectiveness of JPEG: A Signal Processing Approach :
Great youtube video by Reducible on images as signals and JPEG compression
Spray Paint
artprimo.com - Caps 101 :
An introduction to spray nozzles: the aerosol equivalent to different paint brushes
Color Theory
Colorspaces
makingsoftware.com - What is a Color Space? :
Chapter on color spaces from an excellent book (with absolutely stunning design)
Languages
Korean
Korean Handwriting :
Textbook fonts aren't how people actually write Korean