2/3/2024 0 Comments Whats the nuclear time calledIn the first measurement campaign, NIST-F3’s frequency offset exhibited drift belowġ0 -17/day over five months. The frequency offset of NIST-F3 has been characterized to within a few parts in 10 -15 in fractional frequency units. Initial evaluations of NIST-F3’s frequency offset and stability were completed recently. It will provide a stable frequency reference that can be used in the NIST time scale and assist with the evaluation of NIST’s primary and secondary frequency standards. Instead, NIST-F3 is intended to be a stable system that operates with high up-time. Unlike the other NIST fountains, NIST-F3 is not intended to realize the definition of the second of the International System of Units (SI) with state-of-the-art accuracy. NIST-F3 is a cesium fountain frequency reference. It is expected to reach an accuracy approaching the 10 -16 level in fractional frequency. Once the evaluation is completed, NIST-F4 will contribute to UTC and calibrate the absolute frequency of next-generation optical atomic clocks. This fountain is an upgrade of the NIST-F1 apparatus. Tuesday's announcement was the first since Russia's invasion of Ukraine, although the panel issued a warning during its last "Doomsday Clock" news conference that Ukraine was a potential flashpoint in an increasingly tense international security environment.NIST-F4 is a primary frequency standard that is currently under evaluation. "It is a metaphor, a reminder of the perils we must address if we are to survive on the planet," the Bulletin, which created the clock, said on its website, also calling it "a design that warns the public about how close we are to destroying our world with dangerous technologies of our own making." "The continuing stream of disinformation about bio weapons laboratories in Ukraine raises concerns that Russia itself maybe thinking of deploying such weapons."įor the past 75 years, the Bulletin of the Atomic Scientists, a nonprofit media organization comprised of world leaders and Nobel laureates, has announced how close it believes the world is to collapse due to nuclear war, climate change and, most recently, the COVID-19 pandemic. The additional concern of Russia's "false accusation" that Ukraine is planning to use radiological dispersal devices, chemical and biological weapons "take on new meaning," she added. "The war's effects also undermine global efforts to combat climate change as countries dependent on Russian oil and gas have expanded investment in natural gas," Bronson said. Secretary General António Guterres warned in August that the "world has entered a time of nuclear danger not seen since the height of the Cold War." "The possibilities that the conflict can spin out of anyone's control remains high."īronson noted that U.N. "Russia's thinly veiled threats to use nuclear weapons remind the world that escalation of the conflict by accident, intention or calculation is a terrible risk," said Rachel Bronson, president and CEO of the Bulletin of the Atomic Scientists. Scientists revealed on Tuesday that the "Doomsday Clock" has been moved up to 90 seconds before midnight - the closest humanity has ever been to armageddon.īulletin of the Atomic Scientists moved the metaphorical clock up 10 seconds from where it had stayed for the past two years, citing the escalation in Russia's invasion of Ukraine in February of 2022.
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