Scientists have observed a stunning demonstration of classic physics giving way to quantum behavior, manipulating a fluid of ultra-cold sodium atoms into a distinct tornado-like formation.
"In a classical fluid, like cigarette smoke, it would just keep getting thinner,"In the new study, MIT physicist Biswaroop Mukherjee and colleagues pushed beyond this stage, capturing a series of absorption images that reveal what happens after atoms' have switched from being predominantly governed by classical to quantum physics.The atom cloud evolved from the needle-like condensate , passed through snake-shaped instability , and formed miniscule tornadoes .
There are even tiny dark spots between the neighboring crystals where vortexes of counterflow occur – just as we see in complex weather systems . "Here, we have quantum weather: The fluid, just from its quantum instabilities, fragments into this crystalline structure of smaller clouds and vortices,""This evolution connects to the idea of how a butterfly in China can create a storm [in the US], due to instabilities that set off turbulence. Even in classical physics, this gives rise to intriguing pattern formation, like clouds wrapping around the Earth in beautiful spiral motions.
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