Archive for the ‘physics’ category: Page 302
Sep 14, 2015
Extending Galactic Habitable Zone Modeling to Include the Emergence of Intelligent Life — By Morrison Ian S. and Gowanlock Michael G. | Astrobiology
Posted by Odette Bohr Dienel in categories: alien life, complex systems, physics, quantum physics, science, space travel
Sep 14, 2015
Physicists develop key component for terahertz wireless
Posted by Phillipe Bojorquez in categories: electronics, internet, mobile phones, physics
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 before terahertz wireless is ready for prime time.
Researchers from Brown University have taken a major step toward addressing one of those challenges. They’ve developed what they believe to be the first system for multiplexing terahertz waves. Multiplexers are devices that enable separate streams of data to travel through a single medium. It’s the technology that makes it possible for a single cable to carry multiple TV channels or for a fiber optic line to carry thousands of phone calls at the same time.
Sep 11, 2015
Breakthrough NIST study creates molecules out of photons
Posted by Shailesh Prasad in categories: innovation, physics
A new study in manipulating photons has created the first two-photon structure that behaves like a molecule of matter.
Sep 10, 2015
Scale of the Universe revisits “Powers of Ten”
Posted by Philip Raymond in categories: astronomy, cosmology, physics, space travel
As a follow-up to Shailesh Prasad’s thought provoking video (just below this article), I offer two equally impressive visualizations of the scope and magnificence of our universe. These videos are the epitome of a teachable moment. And it’s fun, too!
Check out this simple, one-button interactive Scale of the Universe by Cary Huang. Simply pull a slider left or right to zoom in or out. It covers the Universe from 1027 meters down to 10-35 meters (from the entire universe to the Plank length and quantum foam).
Charles and Ray Eames
Unlike the classic film by Charles & Ray Eames (more about that later), the zoom doesn’t really take viewers closer or further away. Rather, it compares relative size by allowing users navigate by magnitudes (a circle indicates each power-of-ten).
Continue reading “Scale of the Universe revisits ‘Powers of Ten’” »
Sep 8, 2015
Why Physicists Are Saying Consciousness Is A State Of Matter, Like a Solid, A Liquid Or A Gas
Posted by Sean Cusack in categories: neuroscience, physics
A new way of thinking about consciousness is sweeping through science like wildfire. Now physicists are using it to formulate the problem of consciousness in concrete mathematical terms for the first time.
Sep 4, 2015
New General Relativity Area law theory suggests time runs backward inside a blackhole
Posted by Sean Brazell in categories: cosmology, physics
Black holes are known to have many strange properties, such as that they allow nothing—not even light—to escape after falling in. A lesser known but equally bizarre property is that black holes appear to “know” what happens in the future in order to form in the first place. However, this strange property arises from the way in which black holes are defined, which has motivated some physicists to explore alternative definitions.
They reported a new area law in general relativity that is based on an interpretation of black holes as curved geometric objects called “holographic screens.”
“The so-called teleology of the black hole event horizon is an artifact of the way in which physicists define an event horizon: the event horizon is defined with respect to infinite future elapsed time, so by definition it ‘knows’ about the entire fate of the universe,” Engelhardt told Phys.org. “In general relativity, the black hole event horizon cannot be observed by any physical observer in finite time, and there isn’t a sense in which the black hole as an entity knows about future infinity. It is simply a convenient way of describing black holes.”
Sep 3, 2015
Hawking offers new solution to ‘black hole information paradox’ | KurzweilAI.net
Posted by Odette Bohr Dienel in category: physics
“Addressing a current controversy in physics about information in black holes, “I propose that the information is stored not in the interior of the black hole as one might expect, but on its boundary, the event horizon.””
Sep 2, 2015
Physicists Discover “Hidden Chaos” Lurking Everywhere
Posted by Sean Brazell in category: physics
It appears that the standard tools used to identify chaotic signatures might be missing lots of hidden chaos — especially in systems that seem like they’re not chaotic at all.
Chaos theory is famously associated with so-called “strange attractors,” marked by a telltale butterfly-wing shape (see above). But according to a new paper by two University of Maryland mathematicians, sometimes chaos looks more like “a strange repeller,” or something else entirely.
Continue reading “Physicists Discover "Hidden Chaos" Lurking Everywhere” »
Aug 30, 2015
Becoming an Interstellar Species
Posted by Benjamin T. Solomon in categories: anti-gravity, defense, disruptive technology, physics, space travel
Our interstellar challenge is, how do we as a planet confined humans, become an interstellar species? This encompasses all human endeavors, and is vitally dependent upon interstellar propulsion physics to realize our coming of age as an interstellar species.
There are so many competing ideas on how to realize interstellar propulsion. These include chemical rockets, ion propulsion, nuclear engines, solar sails, atomic bomb pulse detonation, antimatter drives, small black holes, warp drives and much more.
How do we sift through all these competing ideas?
For his objectivity and courage in stating that mathematics has become so sophisticated that it can now be used to prove anything, I have named the approach to solving this interstellar challenge the Kline Directive, in honor of the late Prof. Morris Kline.
