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Researchers at the National University of Singapore have built a beam of darkness that can make objects invisible from a long distance away. This isn’t the plot from some not-so-distant sci-fi movie: It really works. The beam of darkness can create a 3D region of invisibility — or “empty light capsule” as the researchers call it — that can hide ...

In October, Nvidia revealed its new monitor synchronization technology designed to improve game experiences by synchronizing directly with the GPU rather than relying on standard timing systems. Dubbed G-Sync, the new method could revolutionize monitor technology — if it delivers as advertised. Now that the first reviews of G-Sync are in, what kind of real-world improvement do we see? So ...