A gently lobbed baseball is easy to see. The same ball, however, can seem to vanish from the hand of a skilled pitcher, whizzing invisibly into the catcher's mitt. Given enough acceleration, moving ...

Fast-moving objects don’t always look the way you’d expect. When something travels near the speed of light, strange things happen—not just to time and space, but also to how the object appears. For ...

When an object in space appears to be racing at nineteen times the speed of sound, it instantly jumps from routine data point to global headline. The claim that NASA tracked such a hyperfast visitor ...

When an object moves extremely fast – close to the speed of light – certain basic assumptions that we take for granted no longer apply. This is the central consequence of Albert Einstein's special ...

Objects rotating at high speed are a feature of modern engineering in various fields, and online inspection of them is a critical challenge. A project at China's Jinan University has now developed a ...

To demonstrate the system, the researchers showed that it could reconstruct real-time high-quality still images of a model jet engine rotating at about ∼2170 rpm (top images) and a CPU cooling fan ...

Multi-material 3D printing lets users fabricate customized objects with multiple colors and varied textures. Yet the process can be time-consuming and wasteful because existing 3D printers must switch ...

In 1959, physicists James Terrell and Roger Penrose (Nobel laureate in 2020) independently concluded that fast-moving objects should appear rotated. However, this effect has never been demonstrated.