Heat leaves atom clusters cold
Clumps of sodium atoms buck the thermodynamic trend
Author archive
Read article: Muon result could jeopardise Standard Model
Muon result could jeopardise Standard Model
New experiments on the muon cast doubt on a long-held theory
A new spin on magnets
The spin on electrons could be used to create super-dense recording media
Read article: Uranium reveals the age of the universe
Uranium reveals the age of the universe
Uranium in a primitive star shows that the universe is at least 12.5 billion years old
Neutron flashes may forecast earthquakes
Seismic activity could be predicted by bursts of neutrons from the Earth's crust
Chirality crops up in nuclear physics
Contrary to expectations, nuclei can be left- or right-handed
Metal superconductors reach new high
Magnesium diboride surprises scientists with its high transition temperature
Black holes go supersonic
Now Luis Garay, James Anglin, Ignacio Cirac and Peter Zoller at the University of Innsbruck in Austria have proposed a realistic way to make an artificial “sonic” black hole in a tabletop experiment (L J Garay et al. 2000 Phys. Rev. Lett. 85 4643). In the February issue of Physics World, Ulf Leonhardt of the […]
Read article: Silicon lasers start to take shape
Silicon lasers start to take shape
Devices made from silicon dominate the microelectronics industry, so silicon should be the material of choice for anyone designing new electronic devices that will be integrated with microelectronic circuits. This also applies to the optoelectronic devices that act as gateways between the electronic realm and the worlds of photonics and optical communications. Most optoelectronic components […]
Vortices multiply in superfluid helium-II
Now Demosthenes Kivotides, Carlo Barenghi and David Samuels at the University of Newcastle in the UK have discovered another surprising feature of liquid helium. They have predicted that the coupled motion of the normal and superfluid components can give rise to an intriguing structure that contains three vortex rings (Science 2000 290 777). In the […]
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