A rather unassuming particle is playing an important role in the hunt for subatomic oddities. Similar to protons and neutrons ...

Astronomers have discovered a giant, 500-light-year-wide cavity between two star-forming regions in the constellations Perseus and Taurus. An ancient supernova could be the culprit.

An evaporating colloidal particle–laden droplet leaves behind a ring-like residue after drying. We routinely observe this ubiquitous phenomenon for dried coffee drops; thus, it is known as the "coffee ...

High-precision spherical parts are widely used in measurement machines, MEMS devices, and other fields, but there are few effective methods for the full annular area measurement of sphere surface. In ...

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A simulation of spherical near-field measurement based on an offset configuration is presented in this paper. The measurement error is defined according to the reference data calculated by spherical ...