Atomic time to rule high-speed trading

• Autores: Jacob Aron
• Localización: New scientist, ISSN 0262-4079, Nº. 2965, 2014, pág. 12
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Aron talks about the atomic clocks at the National Physical Laboratory (NPL) in Teddington UK which generates a signal that is used to mark time across the nation. The NPL's atomic clocks measure how often a caesium atom's electrons jump between two energy levels--a little more than nine billion jumps equal one second. Measurements from multiple clocks are then averaged together to create a highly accurate signal. The clocks must be kept at a stable temperature because small heat variations can throw them off. Standing among them, he's struggling to hear over the whir of the cooling systems