Photonics: Einsteins general theory of relativity defines gravity as the curvature of space/time around objects with mass; the more massive the object, the more drastically it warps space/time. As a result, the trajectory of light bends as it whizzes past the universes denest, most massive objects, including black holes. Astronomers have confirmed this phenomenon, called gravitational lensing, by observing galaxies that distort light coming from behind them...Scientists cant experiement with massive stars and galaxies in the lab. (that is all changing) A physicist at Louisiana Tech University in Ruston and colleagues from Nanjing University in China set out to build a miniature star on a chip that...uses optics rather than gravity. (how it works) tiny glass spheres...embedded in molten plastic...roughly a micrometer thick layer of plastic...(bends light)...that came close to a sphere...(however)...William Unruh, a physicist at the University of British Columbia in Vancouver...(says)...just because the experiment mimics the influence of gravity doesnt mean its a perfect simulation...The experiment...(is)...detailed...(in the)...September 29 in Nature Photonics. Science News/Novemeber 2,2013. (We are going past Einstein...he was a great help in understanding real realtiy...but he grew up when there was no knowlege about photons--quantum small energy that together form individual photons or waves of photons...like or not...scientist are evolving past Einstein.) (CiR)
Posted on: Mon, 11 Nov 2013 22:46:35 +0000
Trending Topics
Recently Viewed Topics
© 2015