NATICK, Mass. (Sept. 17, 2013) -- One of life's greatest necessities, water, is a key ingredient for the new gentle motion retort used by the Combat Feeding Directorate at the U.S. Army Natick ...

The water spray is not strong enough to hurt an animal, but it does cause enough annoyance, making the animals go elsewhere. Can motion-activated sprinklers under or over water my vegetation? A.

You'll definitely need some gear for it—the Arduino for one, but also a PIR motion sensor, not to mention the (cleaned and rinsed!) Raid Power Sprayer motorized spray bottle.

Water cannons, called monitors in the firefighting industry, let firefighters direct water by aiming a spray nozzle mounted on a set of swivels that allow horizontal and vertical motion. Elkhart ...

Scientists have developed a water-repelling, porous sensor capable of detecting subtle water waves, tracking human movement, and even recognizing speech 1. The material can have applications in ...