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Scientists Make the Coldest Object On Earth
By Jason Daley/ SmartNews: Keeping You Current/ SmithsonianMag.com
"Researchers cooled a tiny aluminum drum almost to absolute zero and think they can go even further.
Though winter often seems like the coldest cold, temperatures can drop much lower. That is, until you hit absolute zero, reports Sarah Kaplan at The Washington Post. This is the point when all motion of atoms that make up an object stop moving—a chilling 0 Kelvin or -459.67 Fahrenheit.
Researchers have tried for decades to reach absolute zero, which is thought to be impossible to ever attain. But recently the scientists at the National Institutes of Standards (NIST) in Boulder, Colorado got closer than scientists ever have. According to a press release, researchers believe that their new technique may actually allow them to reach that fabled point.
“The results were a complete surprise to experts in the field,” José Aumentado, co-author of a paper on the technique recently published in the journal Nature says in the press release. “It’s a very elegant experiment that will certainly have a lot of impact.”
Though scientists have previously brought individual atoms to absolute zero and even lower, this latest study documents the coldest complex object to date. The details are pretty technical, but Kaplan explains that in a process called sideband cooling, researchers used lasers to frost over a tiny aluminum drum, just 20 micrometers across and 100 nanometers thick...."
It can get much, much colder than this. (TothGaborGyula via iStock)
Richard
By Jason Daley/ SmartNews: Keeping You Current/ SmithsonianMag.com
"Researchers cooled a tiny aluminum drum almost to absolute zero and think they can go even further.
Though winter often seems like the coldest cold, temperatures can drop much lower. That is, until you hit absolute zero, reports Sarah Kaplan at The Washington Post. This is the point when all motion of atoms that make up an object stop moving—a chilling 0 Kelvin or -459.67 Fahrenheit.
Researchers have tried for decades to reach absolute zero, which is thought to be impossible to ever attain. But recently the scientists at the National Institutes of Standards (NIST) in Boulder, Colorado got closer than scientists ever have. According to a press release, researchers believe that their new technique may actually allow them to reach that fabled point.
“The results were a complete surprise to experts in the field,” José Aumentado, co-author of a paper on the technique recently published in the journal Nature says in the press release. “It’s a very elegant experiment that will certainly have a lot of impact.”
Though scientists have previously brought individual atoms to absolute zero and even lower, this latest study documents the coldest complex object to date. The details are pretty technical, but Kaplan explains that in a process called sideband cooling, researchers used lasers to frost over a tiny aluminum drum, just 20 micrometers across and 100 nanometers thick...."
It can get much, much colder than this. (TothGaborGyula via iStock)
Richard