Home > Term: A1 time
A1 time
An atomic-time scale established by the U. S. Naval Observatory, with the origin on 1 January 1958 at zero hours UT2 and with the unit (second) equal to the occurrence of 9,192,631,770 cycles of cesium-generated radiation of specified wavelength at zero field.
- Jenis Kata: noun
- Industri / Domain: Sains bumi
- Kategori: Sains pemetaan
- Company: American Congress on Surveying & Mapping
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