Water provides amazing opportunities for life at the interface, but can also pose potentially lethal threats to insects. The danger stems from the physics at fluid interfaces. The small length scale of most insects (described by some characteristic length\(\ell\)) causes the force of surface ten...
Inspection time.After the process of eyeglass cleaning is complete, you’ll want to inspect your work. There’s nothing more irritating than taking the time to clean your glasses only to notice a smudge that you missed as soon as you step outside. So, grab your glasses, hold them by the...