An illustrated, curved plate with a geometric sand pattern; Anna and Herbert's portrait badge in the lower right corner.

Cymatics makes the effects of vibrations visible. This article explains Chladni figures, frequency, amplitude, and resonance. It shows why the material and experimental setup influence the pattern and why no medical benefits can be derived from these striking images.Continue reading

Piano keys, two tuning forks, and a violin bathed in warm light; a portrait badge of Anna and Herbert in the lower right corner.

What does it mean to octave a frequency? This article explains the two-to-one ratio, distinguishes between unit conversion and signal modification, and provides its own calculation examples. You’ll also learn how to classify musical and electronic applications and why a numerical relationship alone does not prove any health effects.Continue reading