{"query": "The ionizing line — where light becomes radiation", "count": 20, "results": [{"id": "card_n_0659d133d839", "title": "The ionizing line — where light becomes radiation", "shelf": "science", "surface": "secular", "snippet": "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/2e10f3cd833c", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "readable": false, "generated": false}, {"id": "card_c_521e7d71f8e4", "title": "The ionizing line — where light becomes radi ↔ Ultraviolet — the first photons that bite", "shelf": "connections", "surface": null, "snippet": "Ionization takes roughly 10 eV; sealed: that threshold sits at 123 nm, in the far ultraviolet  — a concord the card itself states; mined + verified.", "authority_tier": "engine_derived", "source": "Concordance miner — 2026-07-11", "readable": false, "generated": false}, {"id": "card_c_cfad1088f99b", "title": "Infrared — everything warm is broadcasting ↔ The ionizing line — where light becomes radi", "shelf": "connections", "surface": null, "snippet": "The photon picture is arriving but gentle: an IR photon carries ~0.1 eV, enough to wiggle molecules (heat), far too weak to break them.  — a concord the card itself states; mined + verified.", "authority_tier": "engine_derived", "source": "Concordance miner — 2026-07-11", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_31_2_radiation_detection_and_detectors_030f371f", "title": "31.2 Radiation Detection and Detectors — College Physics", "shelf": "physics", "surface": "secular", "snippet": "31.2\n\nRadiation Detection and Detectors\n\nIt is well known that ionizing radiation affects us but does not trigger nerve impulses. Newspapers carry stories about unsuspecting victims of radiation poiso", "authority_tier": "reference", "source": "OpenStax: College Physics (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_2e_32_2_biological_effects_of_ionizing_radi_1c813e42", "title": "32.2 Biological Effects of Ionizing Radiation — College Physics 2e", "shelf": "physics", "surface": "secular", "snippet": "32.2\n\nBiological Effects of Ionizing Radiation\n\nLearning Objectives\n\nBy the end of this section, you will be able to:\n\nDefine various units of radiation.\n\nDescribe RBE.\n\nWe hear many seemingly contrad", "authority_tier": "reference", "source": "OpenStax: College Physics 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_ap_courses_2e_32_2_biological_effects_of_ionizing_radi_1c813e42", "title": "32.2 Biological Effects of Ionizing Radiation — College Physics for AP® Courses 2e", "shelf": "physics", "surface": "secular", "snippet": "32.2\n\nBiological Effects of Ionizing Radiation\n\nLearning Objectives\n\nBy the end of this section, you will be able to:\n\nDefine various units of radiation.\n\nDescribe RBE.\n\nWe hear many seemingly contrad", "authority_tier": "reference", "source": "OpenStax: College Physics for AP® Courses 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_32_2_biological_effects_of_ionizing_radi_1c813e42", "title": "32.2 Biological Effects of Ionizing Radiation — College Physics", "shelf": "physics", "surface": "secular", "snippet": "32.2\n\nBiological Effects of Ionizing Radiation\n\nWe hear many seemingly contradictory things about the biological effects of ionizing radiation. It can cause cancer, burns, and hair loss, yet it is use", "authority_tier": "reference", "source": "OpenStax: College Physics (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_2e_section_summary_45ccd82a", "title": "Section Summary — College Physics 2e", "shelf": "physics", "surface": "secular", "snippet": "Section Summary\n\n31.1\n\nNuclear Radioactivity\n\nSome nuclei are radioactive—they spontaneously decay destroying some part of their mass and emitting energetic rays, a process called nuclear radioactivit", "authority_tier": "reference", "source": "OpenStax: College Physics 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_section_summary_532389ac", "title": "Section Summary — College Physics", "shelf": "physics", "surface": "secular", "snippet": "Section Summary\n\n31.1\n\nNuclear Radioactivity\n\nSome nuclei are radioactive—they spontaneously decay destroying some part of their mass and emitting energetic rays, a process called nuclear radioactivit", "authority_tier": "reference", "source": "OpenStax: College Physics (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_ap_courses_2e_section_summary_25ee1e2c", "title": "Section Summary — College Physics for AP® Courses 2e", "shelf": "physics", "surface": "secular", "snippet": "Section Summary\n\n31.1\n\nNuclear Radioactivity\n\nSome nuclei are radioactive—they spontaneously decay destroying some part of their mass and emitting energetic rays, a process called nuclear radioactivit", "authority_tier": "reference", "source": "OpenStax: College Physics for AP® Courses 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_ap_courses_section_summary_0de8452f", "title": "Section Summary — College Physics for AP® Courses", "shelf": "physics", "surface": "secular", "snippet": "Section Summary\n\n31.1\n\nNuclear Radioactivity\n\nSome nuclei are radioactive—they spontaneously decay destroying some part of their mass and emitting energetic rays, a process called nuclear radioactivit", "authority_tier": "reference", "source": "OpenStax: College Physics for AP® Courses (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_2e_32_3_therapeutic_uses_of_ionizing_radiat_96ed6849", "title": "32.3 Therapeutic Uses of Ionizing Radiation — College Physics 2e", "shelf": "physics", "surface": "secular", "snippet": "32.3\n\nTherapeutic Uses of Ionizing Radiation\n\nLearning Objectives\n\nBy the end of this section, you will be able to:\n\nExplain the concept of radiotherapy and list typical doses for cancer therapy.\n\nThe", "authority_tier": "reference", "source": "OpenStax: College Physics 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_32_3_therapeutic_uses_of_ionizing_radiat_96ed6849", "title": "32.3 Therapeutic Uses of Ionizing Radiation — College Physics", "shelf": "physics", "surface": "secular", "snippet": "32.3\n\nTherapeutic Uses of Ionizing Radiation\n\nTherapeutic applications of ionizing radiation, called radiation therapy or radiotherapy, have existed since the discovery of x-rays and nuclear radioacti", "authority_tier": "reference", "source": "OpenStax: College Physics (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_ap_courses_32_3_therapeutic_uses_of_ionizing_radiat_40159b02", "title": "32.3 Therapeutic Uses of Ionizing Radiation — College Physics for AP® Courses", "shelf": "physics", "surface": "secular", "snippet": "32.3\n\nTherapeutic Uses of Ionizing Radiation\n\nLearning Objectives\n\nBy the end of this section, you will be able to:\n\nExplain the concept of radiotherapy and list typical doses for cancer therapy.\n\nThe", "authority_tier": "reference", "source": "OpenStax: College Physics for AP® Courses (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_college_physics_ap_courses_2e_32_3_therapeutic_uses_of_ionizing_radiat_96ed6849", "title": "32.3 Therapeutic Uses of Ionizing Radiation — College Physics for AP® Courses 2e", "shelf": "physics", "surface": "secular", "snippet": "32.3\n\nTherapeutic Uses of Ionizing Radiation\n\nLearning Objectives\n\nBy the end of this section, you will be able to:\n\nExplain the concept of radiotherapy and list typical doses for cancer therapy.\n\nThe", "authority_tier": "reference", "source": "OpenStax: College Physics for AP® Courses 2e (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_word_radiation_sickness", "title": "radiation sickness", "shelf": "dictionary", "surface": "secular", "snippet": "radiation sickness: (noun) syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions) — syn: radiation syndrome, radiation", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_word_radiation_syndrome", "title": "radiation syndrome", "shelf": "dictionary", "surface": "secular", "snippet": "radiation syndrome: (noun) syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions) — syn: radiation sickness, radiation", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_word_radiation", "title": "radiation", "shelf": "dictionary", "surface": "secular", "snippet": "radiation: (noun) energy that is radiated or transmitted in the form of rays or waves or particles · (noun) the act of spreading outward from a central source · (noun) syndrome resulting from exposure", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_word_ionizing_radiation", "title": "ionizing radiation", "shelf": "dictionary", "surface": "secular", "snippet": "ionizing radiation: (noun) high-energy radiation capable of producing ionization in substances through which it passes", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_pron_ionizing", "title": "ionizing", "shelf": "pronunciation", "surface": "secular", "snippet": "ionizing: pronounced (ARPABET) AY1 AH0 N AY2 Z IH0 NG. From the CMU Pronouncing Dictionary — the standard machine-readable pronunciations of North American English.", "authority_tier": "reference", "source": "CMU Pronouncing Dictionary (cmudict) — BSD-2-Clause, Carnegie Mellon", "readable": false, "generated": false}], "house": {"door": "FIND", "kind": "cards", "trail": "results", "seal": null, "next_step": {"do": "open the top card", "door": "FIND", "tool": "card_get", "params": {"id": "card_n_0659d133d839"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}