Friday, May 2, 2025

Extremely cold drop of helium can be levitated forever

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John Furner
John Furnerhttps://dailyobserver.uk
Experienced multimedia journalist with a background in investigative reporting. Expert in interviewing, reporting, fact-checking, and working on a deadline. Excel at cinematic storytelling and sourcing images, sound bites, and video for multimedia publication. Work well with photographers and videographers when not shooting his own stories, and love to collaborate on large, in-depth features.

The Daily Observer London Desk: Reporter- John Furner

A droplet of helium, made to float in a vacuum

Harris Lab, Yale University.

A drop of liquid helium cooled to an extremely low temperature can be made to float in a vacuum for an indefinitely long time. In this state, it could serve as a powerful mini-laboratory for fundamental physics.

At -269°C, liquid helium is already strangely cold for a liquid, but when it is approximately 2 degrees colder it becomes even stranger. At this temperature, quantum effects make its viscosity vanish and turn it into a superfluid.

John Furner
John Furnerhttps://dailyobserver.uk
Experienced multimedia journalist with a background in investigative reporting. Expert in interviewing, reporting, fact-checking, and working on a deadline. Excel at cinematic storytelling and sourcing images, sound bites, and video for multimedia publication. Work well with photographers and videographers when not shooting his own stories, and love to collaborate on large, in-depth features.

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John Furner
John Furnerhttps://dailyobserver.uk
Experienced multimedia journalist with a background in investigative reporting. Expert in interviewing, reporting, fact-checking, and working on a deadline. Excel at cinematic storytelling and sourcing images, sound bites, and video for multimedia publication. Work well with photographers and videographers when not shooting his own stories, and love to collaborate on large, in-depth features.