News tagged with optical wavelengths
Zeroing in on Hubble's constant
Jan 05, 2009 |
4.3 / 5 (12) |
0
(PhysOrg.com) -- In the early part of the 20th Century, Carnegie astronomer Edwin Hubble discovered that the universe is expanding. The rate of expansion is known as the Hubble constant. Its precise value ...
Search results for optical wavelengths
Scientists demonstrate multibeam, multi-functional lasers
Nov 30, 2009 |
5 / 5 (6) |
0
An international team of applied scientists from Harvard, Hamamatsu Photonics, and ETH Zürich have demonstrated compact, multibeam, and multi-wavelength lasers emitting in the invisible part of the light spectrum ...
Selling chip makers on optical computing
Nov 24, 2009 |
4.6 / 5 (11) |
1
(PhysOrg.com) -- Computer chips that transmit data with light instead of electricity consume much less power than conventional chips, but so far, they've remained laboratory curiosities. Professors Vladimir ...
New device enables early detection of cancerous skin tumors
Nov 24, 2009 |
not rated yet |
0
Researchers at Ben-Gurion University of the Negev are developing a new device that detects cancerous skin tumors, including melanomas that aren't visible to the naked eye.
Invisibility visualized: German team unveils new software for rendering cloaked objects
Nov 13, 2009 |
4 / 5 (5) |
1
(PhysOrg.com) -- Scientists and curiosity seekers who want to know what a partially or completely cloaked object would look like in real life can now get their wish -- virtually. A team of researchers at the ...
New nano color sorters from Molecular Foundry
Nov 12, 2009 |
4.3 / 5 (4) |
0
Berkeley Lab researchers have engineered a new class of bowtie-shaped devices that capture, filter and steer light at the nanoscale. These "nano-colorsorter" devices act as antennae to focus and sort light ...
In a Galaxy Far, Far Away...
Nov 06, 2009 |
4.9 / 5 (8) |
38
(PhysOrg.com) -- Astronomers have published the discovery of the farthest known object in the cosmos: a star that exploded when the universe was only 630 million years old -- only 4.6% of its current age. ...
Researcher: 'Optical biopsy' for breast cancer increasingly accurate
Nov 05, 2009 |
not rated yet |
0
(PhysOrg.com) -- Most biopsies following mammograms reveal benign abnormalities, not cancer. But women may not have to endure the medical costs, stress and potential complications that accompany such invasive biopsies forever. ...
Compressing photonic signals for greater bandwidth
Nov 03, 2009 |
4.5 / 5 (6) |
3
Cornell researchers have developed an ingenious method to time-compress optical signals. The process could enable optical communication systems to carry many more bits per second or could also be used to generate ...
The Ring Nebula
Nov 02, 2009 |
4.3 / 5 (7) |
2
The diversity of colours, shapes, and sizes of planetary nebulae make them fascinating objects. In this photo release Calar Alto presents a rather unique view combining both optical and near-infrared data ...
Porphyrin Dimers Increase Efficiency of Dye-Sensitized Solar Cells
Oct 30, 2009 |
4.5 / 5 (12) |
1
(PhysOrg.com) -- Porphyrins are most commonly thought of as the pigment in red blood cells, but now scientists have found that porphyrins can also be used to increase the efficiency of an inexpensive type ...
List of search results for optical wavelengths
