Asset bundler Updated 2025-07-16
In order to make websites efficient and portable, a lot of transpilation is needed.
Web browser Updated 2025-07-16
Wave equation solver Updated 2025-07-16
This section talks about solvers/simulators dedicated solving the wave equation. Of course, any serious solver will likely be able to solve a wider range of PDE, so this section contains mostly fun toys. For more serious stuff see: Section "PDE solver".
JavaScript toy solvers:
Wave Updated 2025-07-16
Diffraction Updated 2025-07-16
Refraction Updated 2025-07-16
Resonance Updated 2025-07-16
Resonance is a really cool thing.
Examples:
Perhaps a key insight of resonance is that the reonant any lossy system tends to look like the resonance frequency quite quickly even if the initial condition is not the resonant condition itself, because everything that is not the resonant frequency interferes destructively and becomes noise. Some examples of that:
  • striking a bell or drum can be modelled by applying an impuse to the system
  • playing a pipe instrument comes down to blowing a piece that vibrates randomly, and then leads the pipe to vibrate mostly in the resonant frequency. Likely the same applies to bowed string instruments, the bow must be creating a random vibration.
  • playing a plucked string instrument comes down to initializing the system to an triangular wave form and then letting it evolve. TODO find a simulation of that!
Another cool aspect of resonance is that it was kind of the motivation for de Broglie hypothesis, as de Broglie was kind of thinking that electroncs might show discrete jumps on atomic spectra because of constructive interference.
Ice Updated 2025-07-16
Ice is the name of one of the solid phases of water.
In informal contexts, it usually refers to the phase of ice observed in atmospheric pressure, Ice Ih.
The Message (1976) Updated 2025-07-16
The film starts off with more interesting "near the revelation" stuff. But then it degrades into religious wars. Ciro was reminded notably of S.

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