Thursday, August 29, 2013 - 06:49
The combined computing power of 200,000 private PCs helps astronomers take an inventory of the Milky Way. The Einstein@Home project connects home and office PCs of volunteers from around the world to a global supercomputer. Using this computer cloud, an international team lead by scientists from the Max Planck Institutes for Gravitational Physics and for Radio Astronomy analysed archival data from the CSIRO Parkes radio telescope in Australia. Using new search methods, the global computer network discovered 24 pulsars – extraordinary stellar remnants with extreme physical properties. These can be used as testbeds for Einstein's general theory of relativity and could help to complete our picture of the pulsar population.
Tuesday, August 27, 2013 - 15:55
Computer models are used to inform policy decisions about energy, but existing models are generally “black boxes” that don’t show how they work, making it impossible for anyone to replicate their findings. Researchers from North Carolina State University have developed a new open-source model and are sharing the data they put into it, to allow anyone to check their work – an important advance given the environmental and economic impact of energy policy decisions.
Tuesday, August 27, 2013 - 14:01
A simple pendulum has two equilibrium points: hanging in the “down” position and perfectly inverted in the “up” position. While the “down” position is a stable equilibrium, the inverted position is definitely not stable. Any infinitesimal deviation from perfectly inverted is enough to cause the pendulum to eventually swing down.
Thursday, August 22, 2013 - 16:13
A pair of experimental atomic clocks based on ytterbium atoms at the National Institute of Standards and Technology (NIST) has set a new record for stability. The clocks act like 21st-century pendulums or metronomes that could swing back and forth with perfect timing for a period comparable to the age of the universe.
Wednesday, August 21, 2013 - 11:58
A ring of protein and pigments, half synthetic and half natural, can be used to quickly prototype light-harvesting antennas that absorb more sunlight than fully natural ones. In diagrams it looks like a confection of self-curling ribbon with bits of bling hung off the ribbon here and there. In fact it is a carefully designed ring of proteins with attached pigments that self-assembles into a structure that soaks up sunlight.
Saturday, August 17, 2013 - 20:38
Scientists at the Nanoelectronic Materials Laboratory (NaMLab gGmbH) have demonstrated the world´s first universal transistor that delivers equal performance for n- and p- type response. They demonstrated an energy efficient CMOS circuit with one single transistor type instead of the two different types used in conventional electronics. Additionally, the nanowire circuit provides different circuit functions enabled by switching the transistors configuration. In contrast state of the art devices have significant differences in composition, technology and size for the different conduction types. The new technology could change the current major CMOS technology significantly enabling a single MOS technology with enhanced functionality.