Blackbody radiation from a warm object attracts polarizable objects
Our physical attraction to hot bodies is real, according to UC Berkeley physicists.
Quantum Physics
Dec 8, 2017
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373
News tagged with optical radiation
Spectral library reveals how boreal trees reflect solar radiation
The number of Earth observation satellites monitoring the environment is growing fast. New satellites are capable of distinguishing increasingly narrow bands of wavelengths and making increasingly frequent observations of ...
Environment
Oct 2, 2017
0
5
High-resolution optical coherence tomography without particle accelerator
A visit to the optometrist often involves optical coherence tomography. This imaging process uses infrared radiation to penetrate the layers of the retina and examine it more closely in three dimensions without having to ...
Optics & Photonics
Aug 8, 2017
0
4
New optical material offers unprecedented control of light and thermal radiation
A team led by Nanfang Yu, assistant professor of applied physics at Columbia Engineering, has discovered a new phase-transition optical material and demonstrated novel devices that dynamically control light over a much broader ...
Optics & Photonics
Aug 30, 2016
0
495
Physicists detect the enigmatic spin momentum of light
Ever since Kepler's observation in the 17th century that sunlight is one of the reasons that the tails of comets to always face away from the sun, it has been understood that light exerts pressure in the direction it propagates. ...
Optics & Photonics
Apr 25, 2016
105
503
Physicists develop key component for terahertz wireless
Terahertz radiation could one day provide the backbone for wireless systems that can deliver data up to one hundred times faster than today's cellular or Wi-Fi networks. But there remain many technical challenges to be solved ...
Optics & Photonics
Sep 14, 2015
69
5174
Researchers provide experimental foundation for optical computing
Someday, our computers, nanoantennas and other kinds of equipment may operate on the basis of photons rather than electrons. Even now, researchers are preparing to accomplish this technological switch. An international group ...
Optics & Photonics
Aug 24, 2015
0
68
Clever cloaks: Unique metamaterials preserve phase while guiding surface waves around ultrasharp corners and bumps
(Phys.org)—Today's photonic and plasmonic devices – the latter based on surface plasmons (a coherent delocalized electron oscillations that exist at the interface between metal and dielectric) and combining the small ...
Highly-precise comparison of mercury and strontium optical lattice clocks
A University of Tokyo and RIKEN research group has developed a mercury-based optical lattice clock and measured the mercury clock frequency using the same group's recently developed strontium-based optical lattice clock as ...
General Physics
Jun 30, 2015
0
16
Future standard for solar irradiance delivered to Switzerland
Scientists from the National Physical Laboratory (NPL) have installed a Cryogenic Solar Absolute Radiometer (CSAR) at the Physikalisch-Meteorologisches Observatorium Davos World Radiation Center (PMOD/WRC) in Switzerland. ...
Earth Sciences
Jun 23, 2015
0
16
