According to the researchers, the approach uses what they call a “fingerprint matrix,” which is a mathematical description of the way each object uniquely scatters waves such as light or ultrasound.

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...

Installing a smart water sensor can save you a lot of money and hassle. The best leak detectors we've tested immediately alert you to issues and even shut off your home's water supply. I’ve been ...