Engineering
Bode Magnitude (Low-Pass)
|H| = -10·log₁₀(1 + (ω/ω_c)²) dB

A first-order low-pass filter is flat in its passband, dips 3 dB at the corner frequency, then rolls off at a clean −20 dB per decade.
Computed & rendered in pure C# on the frozen OnlyCSharp 1.8 library — animation baked to GIF with the library's own
Gif encoder (no GPU, no ffmpeg, no external packages).