|
|
|
|
|
Experimental Methods and Techiques
|
|
Written by xScience.Info
|
|
Wednesday, 13 December 2006 |
In 1670 Isaac Newton demonstrated the composite
nature of sunlight when he sent a carefully collimated sunbeam
through a prism, which spread out the light into a rainbow of
colors; by sending a beam of single color through a second prism
(with no further spreading) Newton showed that the color was not
being imposed by the prism but was intrinsic to the light itself.
Now physicists using the Advanced Photon Source at Argonne National
Lab, in Illinois, have spread out a beam of X-rays (which are, after all, just a
more energetic version of visible light) into a rainbow of colors.
|
|
Read more...
|
|
Physics and Astronomy
|
|
Written by xScience.Info
|
|
Wednesday, 13 December 2006 |
 A new analytical technique that uses infrared spectroscopy to study
light-sensitive organic materials could lead to the development of
cheaper, more efficient solar cells. Using infrared (IR) spectroscopy
to study the vibrations of atoms within the material, the technique
provides information about the movement of electrons within a film of
carbon-based materials. Obtaining this information is a critical step
in the development of a new class of solar cells, which promise
significant savings in production costs compared to conventional
silicon-based cells. The new analytical technique, published as the
cover story in this week's issue of the Journal of Physical Chemistry B, was developed by a team led by Penn State University researcher John B. Asbury, assistant professor of chemistry.
|
|
Read more...
|
|
Life Sciences
|
|
Written by xScience.Info
|
|
Tuesday, 12 December 2006 |
 An organelle called the nucleolus resides deep within the cell nucleus
and performs one of the cell's most critical functions: it manufactures
ribosomes, the molecular machines that convert the genetic information
carried by messenger RNA into proteins that do the work of life.
|
|
Read more...
|
|
Physics and Astronomy
|
|
Written by xScience.Info
|
|
Tuesday, 05 December 2006 |
Dark energy, the unidentified force
that's pushing the universe to expand at ever faster rates, was
already at work as early as nine billion years ago, scientists
reported last week. New Hubble Space Telescope sightings of distant
supernova explosions support the explanation of dark energy as
energy of the vacuum whose density has stayed constant throughout
the universe's history, the scientists said.
|
|
Read more...
|
|
Physics and Astronomy
|
|
Written by xScience.Info
|
|
Tuesday, 05 December 2006 |
A team of Italian and German physicists has
developed a new, flexible fabrication technique for rewritable
photonic crystal devices, which could make it easier to create and
modify circuits in which photons process information in the same way
that electric currents do in electronics.
|
|
Read more...
|
| << Start < Prev 1 2 3 4 5 6 7 8 9 Next > End >>
| | Results 11 - 15 of 43 |
|
|
|
|
|
Latest Stories |
Scientists Claim: MINI BLACK HOLES Are NO DANGER. Wed, 10-09-08 The Large Hadron Collider , the largest and most expensive scientific instrument ...
The Physics Question Session Starts Tue, 26-08-08 The new service of xscience.info has been lauchned. Ask your question and ...
MOLECULAR DYNAMICS SIMULATIONS CHALLENGE CURRENT THEORY OF ELECTROKINETIC PHENOMENA Tue, 18-03-08 Recent molecular dynamics simulations showed electrophoresis of oil droplets in the absence ...
The World of Albert: There are days you would like to forget about Mon, 25-02-08 The last weeks Albert was busy setting up a new ...
AMOEBAS ANTICIPATE CLIMATE CHANGE Mon, 14-01-08 A new experiment demonstrated that amoebas slow their motion in synchronization ...
Controlling Cardiac Chaos-A Gentler Approach Thu, 04-10-07 Physics can save lives: a new type of defibrillation aims to ...
New nanoparticle vaccine is more effective but less expensive Thu, 04-10-07 Bioengineering researchers from the EPFL in Lausanne, Switzerland (http://lmrp.epfl.ch/) , have developed ...
Nano mechanics of the cell Fri, 24-08-07 How strong is an individual living cell? How is it ...
Conten List: Optical Tweezer Fri, 24-08-07 One of the aims of xscience.info is to provide also articles from ...
|
|
Who's Online |
|
We have 18 guests online |
|
|
News 
