emberline
Hear what matter is made of. Every element is one additive chord whose notes are its real emission spectrum — the intervals are set by physics, never by a scale.
HhydrogenH · hydrogen · 4 lines · sparse clean chord
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Simple gases (hydrogen, sodium) sound sparse and clean; dense-line metals (iron, neon) shimmer and beat. That roughness is the physics of matter itself — smallest interval in this chord ≈ 380 cents.