Many measurements start with sensors, be they temperature, strain, light, position, or other physical properties. Accurately measuring the distance to and speed of an object has challenges relating to ...

Researchers have developed a new kind of lidar system that simultaneously measures the location, speed and material ...

If you want to know exactly how far, and fast, you've run, then a speed-and-distance monitoring (SDM) watch is an essential piece of kit. Timex, Garmin and Navman produce SDMs that use satellites to ...

You can use speedometer apps on your Android smartphone to find out the speed of your car, bike, or other vehicle. Speedometer apps tell you the current speed, average speed, over-speed alerts, trip ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...