OpenStax
Open Stax: Gauge Pressure, Absolute Pressure, and Pressure Measurement
From a chapter on Fluid Statics in a Physics textbook. This section of the chapter looks at the definitions of gauge pressure and absolute pressure, and how barometers work. It also discusses how blood pressure is measured. Includes...
PBS
Pbs Teachers: Scientific American: The Intimate Machine: Weighing In
Explore the "intelligent floor," which contains sensors that can track movements, and emulate the weighing technique associated with this technology. Explore the relationship between volume and mass and the difference between accuracy...