Inductive sensors are non-contact proximity sensors that detect ferrous targets, ideally ones made of mild steel thicker than one millimeter. They consist of four major components: a ferrite core with ...

Technically, very few phones are absolutely waterproof — don't expect to take one for a swim, much less scuba diving. But for reasonably possible scenarios like getting caught in the rain, spilling a ...

Can you take your phone swimming? Can your phone go in the sea? Here's what you should know about your phone's waterproofing. When he's not testing the latest phones or phone cameras, Andrew can ...

Biosensors are devices used to detect the presence or concentration of a biological analyte, such as a biomolecule, a biological structure or a microorganism. Biosensors consist of three parts: a ...

Ultrasound is a non-invasive imaging technique that uses the differential reflectance of acoustic waves at ultrasonic frequencies to detect objects and measure distances. It is commonly used for ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Jenni Gritters and Claire Wilcox We’ve added a new upgrade pick, the Arc’Teryx ...