ENCHANTING PHYSICS WORLD

 HISTORY CREATED BY REDEFINING THE TIME TRILLION BILLIONTH TIMES MORE ACCURATE..... YES.... YES..... YOU READ IT CORRECTLY  WE HUMANS ARE NOW AT A STAGE TO REDEFINE THE TIME MORE PRECISELY , ALMOST 1000 TIMES MORE ACCURATE THAN PREVIOUS. LETS NOW HAVE A LOOK AT HOW DO SCIENTISTS ACHIEVED THIS MILESTONE: SCIENTIST OF NIST COMPARED THE 3 ATOMIC CLOCKS (YTTERBIUM , STRONTIUM , ALUMINIUM & MAGNESSIUM ) BY CONNECTING THEM VIAOPTICAL FIBRES. SCIENTISTS HAVE COMPARED THESE THREE CLOCKS UPTO AN ACCURACY OF100 TIMES MORE THAN RECENTLY IN-USE CESIUM CLOCKS. THE SPECIALITY IN THE EXPERIMENT WAS THAT THE UNCERTAINTY IN MEASURING THE FREQUENCY RATIO WAS ONLY 0.000000000000000008   CONCLUSION & BENEFITS OF RESEARCH :- THIS RESEARCH WILL NOW BE HELPFUL IN DEVELOPING ATOMIC CLOCKS WITH MORE ACCURACY IN FUTURE AND INTERNATIONAL TIME KEEPING.

 Revealing nano big bang:  Scientists observe the first milliseconds of crystal formation New study shows how stable materials have unstable beginnings  Date: March 25, 2021 Source: DOE/Lawrence Berkeley National Laboratory Summary: Scientists recruited a world-leading microscope to capture atomic-resolution, high-speed images of gold atoms self-organizing, falling apart, and then reorganizing many times before settling into a stable, ordered crystal. When we grow crystals, atoms first group together into small clusters -- a process called nucleation. But understanding exactly how such atomic ordering emerges from the chaos of randomly moving atoms has long eluded scientists. Classical nucleation theory suggests that crystals form one atom at a time, steadily increasing the level of order. Modern studies have also observed a two-step nucleation process, where a temporary, high-energy structure forms first, which then changes into a stable crystal. But according to a...