WebbThe present uncertainty of CS2 is estimated to be 22 x 10 to the -15th. Frequency intercomparisons of the PTB's two primary clocks, CS1 and CS2, averaged over one … Webbjoined the TAI community. These clocks are mostly industrial cesium clocks, but a few hydrogen masers (about 5) and laboratory cesium clocks (4 to 6) bring an important contribution, on account of their high stability. An idea of the long—term frequency stability of EAL can be obtained by comparison with the primary frequency standard PTB-CS1,
primary clock - Englisch-Deutsch Übersetzung PONS
WebbAs the foundation of our work, we continued the operation of the primary clocks CS1 and CS2, and of the cold-atom cesium fountain CSF1. Recent activities in the field of time … WebbCS2: The PTB's new primary clock Abstract: The design principles of the Physikalisch-Technische Bundesanstalt's (PTB's) new primary clock, CS2, are reported. Experimental … normal markup on restaurant food
Physikalisch-Technische Bundesanstalt, Germany
WebbPTB currently provides data from three PTB-built clocks with a thermal atomic beam, CS1, CS2, and CS3 (which is no longer evaluated as a primary clock), three commercial cesium clocks, and two active hydrogen masers as inputs to the calculation of the free atomic time scale EAL (Echelle atomique libre) by the International Bureau of Weights and … WebbOperation of the PTB primary clocks in 2024 PTB's primary clocks with a thermal beam During 2024, PTB’s primary clocks CS1 and CS2 were operated almost continuously. … WebbPRIMARY TIME AND FREQUENCY REFERENCES PTB has continued to operate two primary frequency standards with a thermal atomic beam as clocks. The CS1 has a history of more than 30 years. It was refurbished about 4 years ago. The CS2 has been operated since 1986 with, up to now, the first charge of cesium (5 g) in each of the two ovens. how to remove rust from fiberglass shower