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In his theory of general relativity, Einstein predicted something called time dilation: the notion that two clocks under two different gravitational pulls will always tick at different speeds. The effect has been observed in many experiments since, but now scientists have recorded it at the smallest scale seen so far. The result was achieved using … Read more
Physicists have measured time dilation on the smallest scale ever using an atomic clock made of thousands of ultracold atoms formed into a stack of pancake-shaped blobs Physics 16 February 2022 By Alex Wilkins Time dilation has been measured inside a tiny atomic clock Jacobson/NIST The world’s most precise atomic clock has confirmed that the … Read more
A group of physicists has announced one of the highest performance atomic clocks ever made. The instrument is said to measure time so precisely that it will only lose one second every 300 billion years, allowing for more exact measurements of gravitational waves, dark matter and other physics phenomena. A study based on the UW-Madison-led … Read more
Long before Alzheimer’s disease is diagnosed, once-trusty proteins start to knot together in the brain in a process that may be hastened by poor sleep. Now, scientists have uncovered a possible mechanism linking disruptions in circadian rhythms and the build-up of proteins associated with Alzheimer’s disease, by studying the rhythmic operation of immune cells and … Read more
Scientists are on a mission to create a global network of atomic clocks that will enable us to, among other things, better understand the fundamental laws of physics, investigate dark matter, and navigate across Earth and space more precisely. However, to be at their most effective, these clocks will need to be reliably and … Read more
In less than 24 hours the Bulletin of the Atomic Scientists will update the Doomsday Clock. It’s currently at 100 seconds from midnight – the metaphorical time when the human race could destroy the world with technologies of its own making. The hands have never before been this close to midnight. There is scant … Read more