lasers

  • New 3D Printer Draws In Midair Like Magic

    New 3D Printer Draws In Midair Like Magic

    Lasers and metal were part of 3D printing for decades before the machines became affordable for personal use. But researchers at Harvard are demonstrating a new technique by which 3D metal structures can be printed in midair, without the need for anything supporting them.


  • How Lasers Will Change The Way We Fight Wars

    When war changes, it usually changes slowly. We’re used to military technology advancing in predictable, plodding steps – incremental advances on what went before, with one side spending years developing its new plane, or tank, or missile, the other side simultaneously developing ways to undermine it. The first nation builds a thing, the second builds…