Everyone knows that a vacuum cleaner, an air conditioner filter, a coffee filter, etc. have the task of "damming a large object and allowing only small items" to pass. On the contrary, however, a ...

A "straight out of science fiction" liquid membrane developed by a team of Penn State mechanical engineers acts as a "reverse filter" that lets large objects through while blocking small ones. The ...

Snapchat is rolling out new filters that can recognize what’s in your photos in order to suggest graphics, like borders or stickers, to accompany your posts. These filters today are capable of ...