Hertzification · Autism · Acetaminophen — 1886

Hertzification Index (0–100, illustrative) Autism (0–100, flat → 1980s rise) Prenatal acetaminophen use (%)

Left axis: normalized (0–100) for Hertzification & Autism (illustrative). Right axis: % pregnancies using acetaminophen (schematic: ~0 until 1950s → rise 1960s–80s → ease down 2000s–2020s). Milestones appear as dots on the Hertzification line and as chips above.

Milestones used for the Hertzification curve

1887 — Hertz proves radio waves (validates Maxwell).
1906 — Early high‑power stations (e.g., Nauen, DE) & Fessenden voice/music broadcast (US).
1920–1922 — KDKA (US); Shukhov Tower (Moscow); broadcasting accelerates with urban electrification.
1925/26 — Sukhareva case series (Moscow); 1935–43 — Kanner cohort (US).
1955 — Children’s Tylenol; 1960s–70s OTC expansion; 1980s analgesic shift.
Early 1980s — Consumer cordless phones spread; 1G→5G eras (1981, 1991, 2001, 2010, 2019+).