Physicists Create Mind-Bending 'Negative Mass Fluid'

Physicists Create Mind-Bending 'Negative Mass Fluid'

US scientists have managed to surprise science geeks across the globe, creating a unique fluid with negative mass – but that actually stands for an object moving forward when pushed back.

The creation began inside a lab at Washington State University (WSU), when physicists cooled rubidium atoms to just slightly above absolute zero. This created what is known as a Bose-Einstein condensate.

When particles are in this state, they move extremely slowly and behave like waves. They synchronize and move in unison as 'superfluid,' which flows without losing energy, according to a WSU press release

The team of physicists, led by WSU professor of physics and astronomy Peter Engels, then used lasers to slow the particles. This not only made them colder, but also allowed hot, high energy particles to escape like steam – which further cooled the material.

"The lasers trapped the atoms as if they were in a bowl measuring less than a hundred microns across," the press release states.

"At this point, the rubidium superfluid has regular mass. Breaking the bowl will allow the rubidium to rush out, expanding as the rubidium in the center pushes outward."

Read more: https://www.rt.com/news/385218-negative-mass-fluid-study/

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