{"id": "card_n_0659d133d839", "kind": "note", "title": "The ionizing line — where light becomes radiation", "body": "The spectrum's own boundary, and it is PER-PHOTON, not per-watt. Ionization takes\nroughly 10 eV; sealed: that threshold sits at 123 nm, in the far ultraviolet: https://narrowhighway.com/s/2e10f3cd833c0da8ed1973eeb517c9de779e8956cd7d04eeee423aab280c4455 . Below\nthe line, photons can only warm — no quantity of them can do what one strong photon does.\nAbove it, each photon can break a bond. The public-health arithmetic seals: a 5G photon at\n60 GHz falls 40,299× SHORT of the ionizing threshold, and the claim \"WiFi photons ionize\"\nseals BROKEN with a residual six orders of magnitude wide: https://narrowhighway.com/s/40cd5e27865df7c84db0ac886e3af4bcf324e23ddddec1e925d5ece09b0c7ba2 . A kilowatt of radio\ncannot do what a microwatt of UV-C does — the danger axis of the spectrum is photon energy,\nnot power. (Heating effects at high power are real and regulated — an honest, separate,\nempirical question.) The boundary of harm is MODAL here too: a kind of photon, not an\namount of signal.", "source": {"label": "Concordance assay — 2026-07-09", "url": "https://narrowhighway.com/s/2e10f3cd833c0da8ed1973eeb517c9de779e8956cd7d04eeee423aab280c4455", "ref": "spectrum_walk_high", "authority_tier": "engine_derived"}, "shelf": "science", "box": "radio_spectrum", "bands": ["ionizing radiation", "ionizing boundary", "123 nm", "10 ev", "5g safety", "wifi safety", "photon energy", "emf myths", "radiation"], "connections": [], "author": "engine", "created_at": "2026-07-10T01:12:51.215332+00:00", "updated_at": "2026-07-10T01:12:51.215332+00:00", "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "metrics": {"paperclips_count": 0, "helpful_count": 0, "not_helpful_count": 0, "cite_count": 0, "walks_through_count": 0, "flagged_count": 0}, "source_hash": "0526e13667ef8fc9000266aa4934f9f578edfc0759ab727668b32819710f5340"}