Free Republic

For the first time, physicists have demonstrated a phenomenon known as the Terrell-Penrose effect, which causes an object moving close to the speed of light to warp before our eyes. The new findings, a collaboration between TU Wien and the University of Vienna, once again confirm a key prediction of Einstein’s theory of relativity by making an optical illusion of relativistic motion observable for the first time. Terrell-Penrose Effect According to Einstein’s special theory of relativity, objects moving close to the speed of light experience unusual effects, including changes in length and time compared to objects at rest. Many relativistic...

A nanostructured copper alloy, Cu-Ta-Li (Copper-Tantalum-Lithium), could be a groundbreaking new high-temperature material for aerospace, defense, and industrial applications, combining properties of several materials into a useful hybrid. Developed in a collaboration between the U.S. Army Research Laboratory (ARL) and Lehigh University (LU), the alloy is one of the toughest copper-based materials ever devised due to its high thermal stability and mechanical strength. Arizona State University and Louisiana State University scientists also contributed to the creation of this new heat-resistant alloy. Cutting Edge Material Science “This is cutting-edge science, developing a new material that uniquely combines copper’s excellent conductivity with...

Astronomers using the James Webb Space Telescope to peer back in time into the farthest reaches of the universe have found stunning evidence for an alternate theory of gravity. Current models of galaxy formation in the early cosmos predict the presence of excess gravity caused by dark matter to pull material into slowly forming galaxies. However, an alternate theory of gravity first proposed in 1998 called Modified Newtonian Dynamics (MOND) suggests that structures in the early universe formed very quickly without the need for theoretical dark matter. Now, researchers from Case Western Reserve University say that scans of ancient galaxies...