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Newest Information : NASA sends coldest place in universe into house
NASA’s Chilly Atom Laboratory (CAL) is a chamber which cools a cloud of atoms referred to as Bose-Einstein condensates (BECs) to a fraction of a level above absolute zero.
Scientists have labored out that outer house by no means will get colder than 2.7 levels above absolute zero (0K or -273.15C) – the temperature of the universe’s background radiation.
However CAL is a field the scale of an ice-chest, designed and constructed by NASA’s Jet Propulsion Laboratory, which makes use of lasers and magnets to make sure atoms are cooled to throughout the limits of existence.
Getting matter this chilly is of big profit to scientists as a result of it reveals the consequences of quantum mechanics, together with superfluidity.
Conserving atoms this chilly is not only about utilizing refrigeration, although – it’s a matter of eliminating the entire forces appearing on (and thus affecting the temperature of) these atoms.
The gravity of Earth is inflicting NASA’s Chilly Atom Laboratory to heat up an excessive amount of beneath the planet’s huge pull.
“Learning these hyper-cold atoms might reshape our understanding of matter and the elemental nature of gravity,” stated CAL Undertaking Scientist Robert Thompson.
“The experiments we’ll do with the Chilly Atom Lab will give us perception into gravity and darkish power – among the most pervasive forces within the universe.”
On Earth, BECs are dragged down by the pull of gravity and might solely be noticed for a fraction of a second.
Within the microgravity surroundings of the Worldwide Space Station, nonetheless, the freely evolving BECs could be noticed for as much as 10 seconds.
As superfluid, BECs appear to have zero viscosity, the place their atoms transfer with out friction as in the event that they have been all one strong substance.
“In the event you had superfluid water and spun it round in a glass, it could spin ceaselessly,” stated aerospace engineer and undertaking supervisor Anita Sengupta.
“There is not any viscosity to gradual it down and dissipate the kinetic power. If we are able to higher perceive the physics of superfluids, we are able to probably study to make use of these for extra environment friendly switch of power.”
Overview : NASA sends coldest place in universe into house
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