AT the beginning of the paper, reference is made to the great advance recently achieved by physiologists, regarding our knowledge of the solid matter floating in the atmosphere, as they have already ...

Size and shape are measures that greatly determine particulate behavior such as flowability, compaction, and mixing. Spherical particles are adequately characterized by size-only techniques. However, ...

In quantum mechanics, measuring both the position and speed of a particle at the same time is not possible. To identify a particle's characteristics, physicists introduced the notion of ...