As air becomes thinner, the density of air decreases, and so too does the pressure of air. Many different factors affect the density of air. Most measurably, as altitude increases, air becomes ...

Back home after his trip, he built this simple Temperature, Altitude and Pressure Display Device using a few off the shelf parts. Following a brief search, he zeroed in on the BMP 180 sensor ...

iPhones made in 2014+ have a barometer for real-time elevation tracking. A barometer measures air pressure, which is crucial for calculating altitude changes. The native iPhone Compass app has a ...