Harmonograph Perfect fifth, +4.0 ¢
Drawing
Fig. 01 / Drawing t 0:00 · swing 100%
Pen x +0.00 / y +0.00
x = A₁ sin(f₁t + p₁) e^(−d₁t) + A₃ sin(f₃t + p₃) e^(−d₃t)
Fig. 02 / Machine
ACB A pen · B paper · C rotary

Interval B against A

Perfect fifth
Ratio2 : 3 Tuning+4.0 ¢ ω ratio1.5035

Harmonic ratios keys 1–9

Pendulum A lateral · pen

Pendulum B lateral · paper

Pendulum C rotary

Pen and clock

Clock speed 1× real time
On change draw afresh