Artículos con la etiqueta ‘Miguel Lerma’

How to Build a Time Cloak with Mirrors

Por • 17 ago, 2013 • Category: Ciencia y tecnología

Miguel Lerma at Northwestern University in Evanston, Illinois, goes even further. Lerma has worked out how to build time cloaks that can operate for arbitrarily long periods of time using little more than a few cleverly placed mirrors. The new approach creates temporal holes that are equal to the time it takes the light to travel the extra distance. So by making this distance arbitrarily long, by bouncing the light back and forth off the Moon or for example, it ought to be possible to make holes in time of almost any length. That’s an impressively simple trick but it is not the first time that physicists have shown that invisibility cloaks are actually much easier to make than had been thought. A couple of months ago, physicists unveiled an invisibility cloak that used mirrors rather than metamaterials to hide objects of almost any size.