news 2017

« BACK

Physics



Results 41 - 60 of 81.


Physics - Chemistry - 31.07.2017
Formation of porous crystals observed for the first time
Scientists at the University of Bristol have, for the first time, observed the formation of a crystal gel with particle-level resolution, allowing them to study the conditions by which these new materials form. The study showed that the mechanism of crystal growth follows the same strategies by which ice crystals grow in clouds, an analogy which could improve our understanding of these fundamental processes In addition, this novel mechanism allowed the research team to spontaneously form sponge-like nanoporous crystals in a continuous process.

Physics - Astronomy / Space Science - 24.07.2017
Saturn’s ’weird’ magnetic field perplexes scientists
The Cassini probe's first results from inside Saturn's rings make scientists question the conventional wisdom on how planets form magnetic fields. As NASA's Cassini spacecraft makes its unprecedented series of weekly dives between Saturn and its rings, scientists are finding - so far - that the planet's magnetic field has no discernable tilt.

Physics - Computer Science - 19.07.2017
Imaging breakthrough reveals magnets’ internal patterns
A new imaging technique has helped scientists make a breakthrough in how they visualise the directions of magnetisation inside an object. Magnets play a vital role in everyday life, are used in everything from hard drives to energy production, and scientists have already been able to study the structure of thin films of magnetic materials.

Physics - Environment - 18.07.2017
Non-toxic alternative for next-generation solar cells
Researchers have demonstrated how a non-toxic alternative to lead could form the basis of next-generation solar cells. We're just scratching the surface of what these compounds can do. Robert Hoye The team of researchers, from the University of Cambridge and the United States, have used theoretical and experimental methods to show how bismuth - the so-called 'green element' which sits next to lead on the periodic table, could be used in low-cost solar cells.

Astronomy / Space Science - Physics - 11.07.2017
Smallest-ever star discovered by astronomers
A star about the size of Saturn - the smallest ever measured - has been identified by astronomers. Our discovery reveals how small stars can be. Alexander Boetticher The smallest star yet measured has been discovered by a team of astronomers led by the University of Cambridge. With a size just a sliver larger than that of Saturn, the gravitational pull at its stellar surface is about 300 times stronger than what humans feel on Earth.

Astronomy / Space Science - Physics - 10.07.2017
Cosmic ‘dust factory’ reveals clues to how stars are born
A group of scientists led by researchers at Cardiff University have discovered a rich inventory of molecules at the centre of an exploded star for the very first time. Two previously undetected molecules, formylium (HCO + ) and sulphur monoxide (SO), were found in the cooling aftermath of Supernova 1987A, located 163,000 light years away in a nearby neighbour of our own Milky Way galaxy.

Physics - 10.07.2017
Yielding silk keeps abseiling spiders from spinning out of control
Spiders don't spin out of control when descending because their silk has an unusual ability to resist twisting forces. In a new paper in Applied Physics Letters , researchers from QMUL, Huazhong University of Science and Technology, Hubei Key Laboratory of Engineering Structural Analysis and Safety Assessment, Hubei University and Beihang University showed that unlike human hair, metal wires or synthetic fibres, spider silk partially yields when twisted.

Physics - 06.07.2017
New, Charming particle discovered at CERN opens ’new frontier’ for physics
Scientists, led by University of Glasgow researchers, have discovered a new kind of heavy particle at the Large Hadron Collider beauty experiment (LHCb) at CERN. The new particle, named Xi-cc++ (pronounced Ks?-CC plus-plus), is part of a family of "doubly charmed baryons" that are predicted to exist by the Standard Model theory of particle physics, but this is the first time scientists have been able to confirm their existence.

Health - Physics - 03.07.2017
Nano-sized drug carriers could be the future for patients with lung disease
Metallic nanomolecules capable of carrying drugs to exactly where they are needed could one day help to treat patients with a fatal lung condition. Scientists based at Imperial College London have tested a new type of nanoparticle called metal organic frameworks (MOF) - tiny metal cages less than 100 nanometres across that can be loaded with drug molecules - which they believe could potentially be used to treat patients with a devastating condition called pulmonary arterial hypertension (PAH).

Mathematics - Physics - 26.06.2017
Mysterious equality with which grains pack it in
For the first time, researchers have been able to test a theory explaining the physics of how substances like sand and gravel pack together, helping them to understand more about some of the most industrially-processed materials on the planet. Granular materials are so widely-used that understanding their physics is very important.

Environment - Physics - 20.06.2017
Lightweight steel production breakthrough: brittle phases controlled
High-strength, lightweight steels can finally be processed on an industrial scale, thanks to a breakthrough in controlling brittle stages - new research from WMG, University of Warwick New processing route discovered - allows low density steel-based alloys to be produced with maximum strength, whilst remaining durable and flexible - largely impossible until now In certain steels, brittle phases occur during production - kappa-carbide (k-carbide)

Astronomy / Space Science - Physics - 14.06.2017
Scientists make waves with black hole research
Scientists at the University of Nottingham have made a significant leap forward in understanding the workings of one of the mysteries of the universe. They have successfully simulated the conditions around black holes using a specially designed water bath. The video can be viewed here. Their findings shed new light on the physics of black holes with the first laboratory evidence of the phenomenon known as the superradiance, achieved using water and a generator to create waves.

Astronomy / Space Science - Physics - 01.06.2017
Gravitational wave discovery confirms new population of black holes
University of Glasgow astrophysicists are celebrating the third detection of gravitational waves - ripples in spacetime which are beginning to underpin an entirely new form of astronomy. This new gravitational wave detection comes from the merger of two massive black holes. The waves cast out across the cosmos by the immense event reached Earth on January 4, 2017, having travelled around three billion light-years on their journey.

Astronomy / Space Science - Physics - 01.06.2017
Gravitational waves provide clues to how black holes are born
Cardiff University researchers help international team observe giant pair of spinning black holes over three billion light years away Gravitational waves emerging from a giant pair of spinning black holes over three billion light years from Earth have been spotted by the Laser Interferometer Gravitational-wave Observatory (LIGO) collaboration.

Life Sciences - Physics - 22.05.2017
Brains or beauty? People perceive attractive scientists as more interesting but less able, studies show
Brains or beauty? People perceive attractive scientists as more interesting but less able, studies show
If you thinkáof good science communicators, it's likely that the names Brian Cox, Alice Roberts or NeiládeGrasseáTyson may come to mind. But do you consider them good science communicators because they look competent or because they are attractive? We know from studies showing that political success can be predicted from facial appearance, that people can be influenced by how someone looks rather than, necessarily, what they say.

Astronomy / Space Science - Physics - 22.05.2017
'Saddle-shaped' universe could undermine general relativity
‘Saddle-shaped’ universe could undermine general relativity
Researchers have shown how singularities - which are normally only found at theácentreáof black holes and hidden from view - could exist in highly curved three-dimensional space. It's a bit like having spacetime in a box. Toby Crisford The researchers, from the University of Cambridge, have used computer simulations to predict the existence of a so-called naked singularity, which interferes with Einstein's general theory of relativity.

Physics - Chemistry - 19.05.2017
Scientists construct a stable one-dimensional metallic material
Scientists construct a stable one-dimensional metallic material
Researchers have developed the world's thinnest metallic nanowire, which could be used to miniaturise many of the electronic components we use every day. We're just starting to understand the physics and chemistry of these systems. Paulo Medeiros The researchers, from the Universities of Cambridge and Warwick, have developed a wire made from a single string of tellurium atoms, making it a true one-dimensional material.

Astronomy / Space Science - Physics - 28.04.2017
Measuring ripples in the cosmic web
Measuring ripples in the cosmic web
Astronomers have made the first measurements of small-scale fluctuations in the cosmic web 2 billion years after the Big Bang. These measurements were conducted using a novel technique which relies on the light of quasars crossing the cosmic web along adjacent lines of sight. One of the biggest challenges was developing the mathematical and statistical tools to quantify the tiny differences we measure in this new kind of data Alberto Rorai The most barren regions of the Universe are the far-flung corners of intergalactic space.

Physics - Health - 28.04.2017
Primary school children get less active with age
Primary school children get less active with age
There is an age-related decline in children's physical activity levels as they progress through primary school, according to a British Heart Foundation-funded study. Researchers at the University of Bristol found that children spent less time doing physical activity and spent more time sedentary from Year 1 (aged 5-6) to Year 4 (aged 8-9).

Physics - Astronomy / Space Science - 27.04.2017
Sun's eruptions might all have same trigger
Sun's eruptions might all have same trigger
Solar eruptions, including enormous coronal mass ejections (pictured), could be triggered by a single process. Credit: NASA/SDO Large and small scale solar eruptions might all be triggered by a single process, according to new research that leads to better understanding of the Sun's activity. Researchers at Durham University and NASA's Goddard Space Flight Center, USA, used 3D computer simulations to show a theoretical link between large and small scale eruptions that were previously thought to be driven by different processes.