{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"60c78d4cfe10138665977f8d5156ffd1eafa751df10f99b555731adfb7c24fb6","created":"2026-10-03T07:17:49Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"14811e3950913f16acfa61be9da6b1c8c2dd26ff955209dda7189a6c65d5969d","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"amo.newtonian-g","field":"amo","n":"1","review_cite":"C. Rothleitner, S. Schlamminger, Invited Review Article: Measurements of the Newtonian constant of gravitation, G, Review of Scientific Instruments, 2017","review_link":"https://doi.org/10.1063/1.4994619","review_verified":"true","summary":"G sets how strongly masses attract, and it is the least precisely known fundamental constant. Careful experiments disagree with each other by far more than their stated errors.","title":"Measuring Newton's gravitational constant G","topic_ref":null,"why":"The scatter in G is a long-running failure of precision measurement that limits geophysics and astrophysics and may hide an unknown experimental effect."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"e5522d18821c2173b9833ad46620a1ae7d5f42c3c43509b22e231c630bb90895","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"2fc3e533758c580a3a1063d487013718aeb0fce759207c2f4e0d517c1d9eb2c7","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"jetsj3R_qCCBIN5hHB4A1PvJ_th_ymFDvYawUvl9KqgYQyorR5TTrTmkGwt3FvD9XSSJ8eVkCJYNBh3UBd0AAg"},"schema":"pubphys.envelope/1"},"record_hash":"e5522d18821c2173b9833ad46620a1ae7d5f42c3c43509b22e231c630bb90895","leaf_index":18}