Then one-thousandth of a millimetre is one thousandth of one-millionth, or one billionth
of a kilometre.
While they demonstrated the method on atoms cooled to one billionth
of a degree, they also showed that it should work for atoms hundreds of times cooler, meaning the thermometer will be an invaluable tool for physicists pushing the cold frontier.(ANI)
The team studied less than 2 billionths
of a gram of fermium painstakingly produced by Oak Ridge (Tenn.) National Laboratory and then flown to Germany.
Part of the trick is in the choice of atoms and part is in the handling: The condensates form only at temperatures less than a few hundred billionths
of a degree above absolute zero.
It ejects a photon for at least a third of the electrons, timed to a precision of tens of billionths
of a second.
A fatal dose is just 100 billionths
of a gram, making the toxin one of the most lethal poisons known.
By converting the slowest atoms in the optical molasses into a "dark" state, in which they no longer absorb photons, the team was able to chill helium atoms to a mere 180 billionths
of a degree above absolute zero, where the atoms moved at the terrapinlike pace of 2 cm/s.