Each mirror, there are four of them, is made of a single piece of glass, a monolithic piece of high-tech ceramic, that has been ground down and polished to such accuracy that the only way to understand what that is is to imagine
Cada espejo, hay 4 en total, está hecho de una pieza de vidrio, una pieza monolítica de cerámica de alta tecnología, nivelada y pulida con tanta precisión que la única manera de entender de qué se