xScience.Info :: Scientific News, Articles, Information


News
Physics and Astronomy
Life Sciences
Experimental Methods & Techiques
Science and Society
Mathematics, Simulations, Modeling
Articles
The World of Albert
Membrane Biophysics
Optical Tweezer
Molecular Dynamics
Physics Question Session
Scientific Resources
Scientific Videos
Useful Links
Login
RSS
feed image
Blogroll
X-Ray Rainbow PDF Print E-mail
Experimental Methods and Techiques
Written by xScience.Info   
Wednesday, 13 December 2006
Image 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...
 
New Technique Studies How Plastic Solar Cells Turn Sunlight into Electricity PDF Print E-mail
Physics and Astronomy
Written by xScience.Info   
Wednesday, 13 December 2006
ImageA 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...
 
Regulating the Nuclear Architecture of the Cell PDF Print E-mail
Life Sciences
Written by xScience.Info   
Tuesday, 12 December 2006
The nucleolus (dark blue) resides within the cell nucleus, surrounded by heterochromatinAn 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...
 
Dark Energy at Redshift Z=1 PDF Print E-mail
Physics and Astronomy
Written by xScience.Info   
Tuesday, 05 December 2006
Image 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...
 
Photonic Crystal: Optical Beehive PDF Print E-mail
Physics and Astronomy
Written by xScience.Info   
Tuesday, 05 December 2006
Image 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
 
 
Newsletter




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 ...
Scientists claim to be a step closer to understanding how anesthetics work in the brain
Mon, 03-09-07
In an earlier news article by xScience.info we reported on the ...
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