Sentences with phrase «superfluid helium»
Superfluid Helium, perhaps.
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Rotating the disk forward and back makes the superfluid helium flow around in the cavity, and the amount that is superfluid can be observed as a change in the period of oscillation of the disk.
Entropy grows at the same rate as the surface area of the superfluid helium, instead of its volume — mimicking how the entropy of a black hole grows as it gobbles up matter and expands.
The team first discovered the quantum whistle in 1997, when they pushed superfluid helium - 3 through a single perforated membrane.
They hope the superfluid helium whistle will eventually find a use in extremely precise gyroscopes for future spacecraft.
But new computer simulations confirm that superfluid helium follows an unusual rule known from black holes — one with mysterious significance for physics.
Physicists at Aalto University have discovered unexpected friction while rotating superfluid helium.
But unlike other quantum stuff, superfluid helium's weird behavior is visible to the naked eye.
The researchers have rotated a container filled with superfluid helium - 3 isotopes near absolute zero temperature.
By using the superfluid helium analogy, we have predicted that there should be other Higgs bosons, which are much heavier (about 1 TeV) than previously observed,» says Professor (emeritus) Grigory E. Volovik.
«Our recent ultra-low temperature experiments on superfluid helium (3He) suggest an explanation why the Higgs boson observed at CERN appears to be too light.
In the 1970s, Brinkman worked on superfluid helium with Anderson and Douglas Osheroff, both Nobelists but for different discoveries, before deciding to go into management.
The large orbit of the loosely bound outer electron of cesium atoms would repel the negative charge of the helium atom — overcoming the van der Waals forces that normally help spread superfluid helium over a surface.
A drop of superfluid helium (left, with its mirror image underneath) won't slide down a cesium surface.
Not exact matches
Robert Richardson worked on the superfluid properties of helium — now he worries that we are squandering our supplies of the gas
«New properties of rotating superfluids discovered in helium nanodroplets.»
Superfluids made in laboratories are usually composed of chilled helium atoms.
The simplest «experiment» is to watch as a container full of liquid helium suddenly springs a leak as it is cooled below the lambda point and the frictionless superfluid fraction begins to pour through microscopic cracks that the normal liquid fraction can not enter.
But stir the same helium like coffee and the normal liquid fraction will resist the motion, imparting viscosity to the superfluid mixture, after all.
No longer a mere liquid, the helium has become a superfluid — a liquid that flows without friction.
For instance, at low temperatures liquid helium's properties change dramatically, becoming a «superfluid» that can overcome friction.
In particular, Xi points to recent numerical simulations at Newcastle University where another superfluid, liquid helium, formed waves of turbulence as it flowed over the rough surface of a wire.
When Cornell physicists Robert Richardson, David Lee and Douglas Osheroff received the 1996 Nobel Prize for their discovery of the superfluid state of liquid helium, it was only the beginning.
This behavior of helium is of great interest because electrons in a superconductor also behave as a superfluid, flowing without resistance from the atoms in the conductor.