IOP Science: Metamaterials (MMs) typically consist of periodic distributions of metal resonators that can be engineered to yield both negative electric permittivity and magnetic permeability, exhibiting effective responses not present in naturally occurring materials. At present, most of the applications based on MMs are limited by their planar fabrication approach. Contemporary MMs are hard and stiff.
The supermassive black hole is 40 million times as massive as the sun and powers a quasar that existed 700 million years after the Big Bang.
Vision Pro is here and it’s a surprisingly capable device. Apple has also loaded the headset with a ton of options and features that aren’t obvious at first glance.
Engineers expect to lose contact with the private US moon lander Odysseus on Tuesday, cutting short the mission after its sideways touchdown last week.
