{"query": "A radioactive clock's decay constant", "count": 2, "results": [{"id": "card_works_nuclear", "title": "A radioactive clock's decay constant", "shelf": "the-works", "surface": "secular", "snippet": "A nuclide with a ten-second half-life decays at λ = ln2 / T½ ≈ 0.0693 per second — the same relation that dates rock and bone.  Worked & sealed by the engine — λ = ln2 / 10 ≈ 0.0693 s⁻¹.  [HOLDS; open", "authority_tier": "verified", "source": "The Works — worked & sealed", "generated": false}, {"id": "card_src_pron_clock_s", "title": "clock's", "shelf": "pronunciation", "surface": "secular", "snippet": "clock's: pronounced (ARPABET) K L AA1 K S. 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", "generated": false}]}