Chameleon pulsar baffles astronomers
A pulsar that is able, without warning, to dramatically change the way in which it shines has been identified by an international team of astronomers.
New approach using nanoparticle alloys allows heat to be focused or reflected just like electromagnetic waves
An MIT researcher has developed a technique that provides a new way of manipulating heat, allowing it to be controlled much as light waves can be manipulated by lenses and mirrors.
Researchers show short laser pulses selectively heat gold nanoparticles
(Phys.org)—Plasmonic gold nanoparticles make pinpoint heating on demand possible. Now Rice University researchers have found a way to selectively heat diverse nanoparticles that could advance their use ...
New experiment helps explain extraordinary optical transmission
Magnetic mirrors enable new technologies by reflecting light in uncanny ways
As in Alice's journey through the looking-glass to Wonderland, mirrors in the real world can sometimes behave in surprising and unexpected ways, including a new class of mirror that works like no other.
SDO watches giant filament on the Sun
A snaking, extended filament of solar material currently lies on the front of the sun— some 1 million miles across from end to end. Filaments are clouds of solar material suspended above the sun by powerful ...
Structure of certain types of beetle shells could inspire brighter, whiter coatings and materials
The physical properties of the ultra-white scales on certain species of beetle could be used to make whiter paper, plastics and paints, while using far less material than is used in current manufacturing ...
Research finds numerous unknown jets from young stars and planetary nebulae
For many years astronomers have known that young 'protostars' drive supersonic jets of gas from their north and south poles. However, this is the first time that so many of them have been detected at once.
NEOWISE spots a comet that looked like an asteroid
Comet C/2013 UQ4 (Catalina) has been observed by NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) spacecraft just one day after passing through its closest approach to the sun. The comet ...
'Nanocamera' takes pictures at distances smaller than light's own wavelength
Researchers at the University of Illinois at Urbana-Champaign have demonstrated that an array of novel gold, pillar-bowtie nanoantennas (pBNAs) can be used like traditional photographic film to record light ...
Shocks in the Cygnus Loop supernovae remnant
(Phys.org) —Supernova remnants (SNRs) play a vital role in the lifecycle of dust in the interstellar medium. As shockwaves from supernovae sweep up interstellar material, they heat the gas and dust, and ...
One step to solar-cell efficiency: Researchers' chemical process may improve manufacturing
Rice University scientists have created a one-step process for producing highly efficient materials that let the maximum amount of sunlight reach a solar cell.
Image of solar activity shows two bright bands circling the Sun
(Phys.org) —Back in 1998, the Sun was behaving as expected. The approximately 11-year cycle of activity was proceeding smoothly, heading towards a peak in 2001.
Hidden nurseries in the Milky Way
(Phys.org) —APEX, the Atacama Pathfinder Experiment, is a telescope of 12 m diameter at an exceptional site on Earth: the Chajnantor plateau is located 5100 m above sea level in the Atacama desert in Chile. ...