Quantcast

Latest Photon Stories

Spacetime More Like A Smooth Whiskey Than A Foamy Brew
2013-01-11 04:58:51

April Flowers for redOrbit.com - Your Universe Online According to new research led by Michigan Technological University, spacetime might be less like a foamy beer and more like a smooth Einsteinian whiskey. Robert Nemiroff and his team studied the tracings of three photons of differing wavelengths to reach this heady conclusion. NASA's Fermi Gamma-ray Space Telescope recorded these tracings in 2009. About 7 billion light years from Earth, a gamma ray outburst threw the photons from...

Quantum Object Behavior Depends On Measurement Apparatus Used
2013-01-09 14:54:07

University of Vienna Whether a quantum object behaves like a wave or like a particle depends (according to the Copenhagen interpretation) on the choice of measurement apparatus used for observing the system, and therefore on the type of measurement performed. Anton Zeilinger's team of physicists at the University of Vienna and the Austrian Academy of Sciences has recently taken this phenomenon further than ever. Whether a certain photon behaves like a particle or like a wave depends on...

Testing Einstein In Outer Space
2013-01-09 05:42:49

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Two of the greatest scientific achievements of the last century were the establishment of the theories of Quantum Mechanics and General Relativity, both of which have withstood continual experimental scrutiny. However, a problem remains. The two theories seem to be at odds with each other. Researchers, for decades, have sought a theory that would combine the two realms — the large-scale gravity fields, and the...

2012-11-28 22:48:23

A cornerstone of physics may require a rethink if findings at the National Institute of Standards and Technology (NIST) are confirmed. Recent experiments suggest that the most rigorous predictions based on the fundamental theory of electromagnetism–one of the four fundamental forces in the universe, and harnessed in all electronic devices–may not accurately account for the behavior of atoms in exotic, highly charged states. The theory in question is known as quantum...

Digital Encryption At The Quantum Level
2012-11-20 10:38:18

Michael Harper for redOrbit.com — Your Universe Online Toshiba and Cambridge University have been working together to find a cheaper and more efficient way to protect networks from criminal thievery and spying. To find the answer, these two teams looked to quantum physics, landing on a solution which allows high-speed fiber cables to be just as secure as dedicated fiber optics lines. Though this advance will likely first appear in government and military networks, this method could...

Supercharged Atoms Force Rethink On Existing Theories
2012-11-12 12:21:38

Brett Smith for redOrbit.com - Your Universe Online An international team of researchers has created ionized xenon atoms so positively charged that scientists involved in the study are now saying the existing theories need to be reexamined. Using the world´s most powerful laser, the Linac Coherent Light Source (LCLS) at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory at Stanford University, the physicists were able to kick out up to 36 electrons from a...

Researchers Reveal New Method For Entangling Photons
2012-11-03 08:24:56

April Flowers for redOrbit.com - Your Universe Online A research team led by the University of Vienna has developed a new method for entangling single photons that gyrate in opposite directions. This is the first step towards entangling and twisting even macroscopic, spatially separated objects in two different directions, according to the team. The findings of this study have been published in the journal Science. Quantum physics is the theory of lightweight objects such as atoms or...

Measuring State Of The Art Beams In Table Top Accelerator
2012-10-25 09:00:23

Studies by Berkeley Lab scientists of electron beam quality in laser plasma accelerators include novel tests for slice-energy spread Part Two: Slicing through the electron beam Wim Leemans of Berkeley Lab´s Accelerator and Fusion Research Division heads LOASIS, the Laser and Optical Accelerator Systems Integrated Studies, an oasis indeed for students pursuing graduate studies in laser plasma acceleration (LPA). Among the most promising applications of future table-top accelerators...

Optical Vortex Beams Placed On Chip
2012-10-19 13:46:28

Lee Rannals for redOrbit.com — Your Universe Online Scientists have demonstrated integrated arrays of emitters of "optical vortex beams" onto a silicon chip for the first time. Light in these beams, as reported to the journal Science, does not propagate in straight rays, but instead travels in a spiral fashion in a hollow conical beam shape. The beams look like a vortex or cyclone, with its light rays "twisted" either left-handed or right-handed. The researchers wrote that...

Interstellar Travel May Be Easier Thanks To New Findings
2012-10-10 09:04:25

April Flowers for redOrbit.com - Your Universe Online Last month in Houston, Texas, Former President Bill Clinton addressed the 100 Year Starship Symposium to express his support for interstellar travel. The Symposium is an international event advocating for human expansion into other star systems. Interstellar travel for humans will depend upon extremely precise measurements of every factor of the mission, and the knowledge of these factors may be improved by the solution to a puzzle...


Latest Photon Reference Libraries

6_c9b95f985acbe749f13bf6301a3180a85
2004-10-19 04:45:41

Electromagnetic Spectrum -- The electromagnetic spectrum describes the various types of electromagnetic radiation based on their wavelengths. Radio, representing wavelengths from a few feet to well over a mile, is at one end of the spectrum. Gamma ray radiation is at the other end: the wavelength of the harder types is so short, in the subatomic range, that we do not have instruments capable of directly measuring it. While the above classification scheme is generally accurate, in...

6_c9b95f985acbe749f13bf6301a3180a84
2004-10-19 04:45:41

Electromagnetic Radiation -- Electromagnetic radiation is a combination of oscillating electric and magnetic fields propagating through space and carrying energy from one place to another. Light is a form of electromagnetic radiation. The theoretical study of electromagnetic radiation is called electrodynamics, a subfield of electromagnetism. When any wire (or other conducting object such as an antenna) conducts alternating current, electromagnetic radiation is propagated at the same...

More Articles (2 articles) »
Word of the Day
abrosia
  • Wasting away as a result of abstinence from food.
The word 'abrosia' comes from a Greek roots meaning 'not' and 'eating'.