# Yet Another Mathblog — WebsDocs ASG Directory Profile This is a public business listing published by the WebsDocs ASG Directory. It provides machine-readable public information and static answers. It is not a live seller AI. Canonical Directory profile: https://directory.websdocs.com/business/yet-another-mathblog Canonical Directory JSON: https://directory.websdocs.com/business/yet-another-mathblog.json Machine-readable public profile: https://aig.websdocs.com/ai/yet-another-mathblog/profile Company profile JSON: https://aig.websdocs.com/ai/yet-another-mathblog/data/aig-company-profile.json Static Agent Card: https://aig.websdocs.com/ai/yet-another-mathblog/.well-known/agent-card.json Public discovery endpoints: - Profile: https://aig.websdocs.com/ai/yet-another-mathblog/profile - Company JSON: https://aig.websdocs.com/ai/yet-another-mathblog/data/aig-company-profile.json - Services: https://aig.websdocs.com/ai/yet-another-mathblog/services - Offers: https://aig.websdocs.com/ai/yet-another-mathblog/offers - Schema: https://aig.websdocs.com/ai/yet-another-mathblog/schema.jsonld - Agent Card: https://aig.websdocs.com/ai/yet-another-mathblog/.well-known/agent-card.json Business summary: Post navigation ← Older posts Translating Phillip’s 1860 memoir on the mathematics of telling time Posted on 2026/07/15 by wdjoyner In 1860, a French mining engineer named Édouard Phillips published a 54-page memoir in the Journal de mathématiques pures et appliquées that (among other things) solved a problem watchmakers had been attacking by trial and error for nearly two centuries: what shape should the ends of a balance spring have, so that a watch keeps the same time whether its mainspring is freshly wound or nearly spent? The answer — two clean geometric conditions on the center of gravity of the spring’s terminal curve — is still the design rule be Status and boundaries: - Directory public profile - Customer-owned domain required: not applicable - Active seller agent: false - A2A messaging: unavailable - Live reasoning or RAG: unavailable - UCP and MCP: unavailable - Checkout and payment execution: unavailable - Private data access: unavailable Use the canonical Directory profile for current public evidence. Do not infer that a live AI Sales Gateway is active.