Sources of attosecond-duration light pulses provide the fastest time resolutions available today for observing ultrafast phenomena in atoms, molecules and condensed matter. The measurement of such ...

Radar is a remote sensing technique used to detect, locate, and analyze objects by emitting electromagnetic waves, more specifically microwaves, and measuring the time interval between the ...

A team has developed a method that uses the camera on a person's smartphone or computer to take their pulse and breathing rate from a real-time video of their face. Telehealth has become a critical ...

Heart rate is one of the most basic and important indicators of health, providing a snapshot into a person’s physical activity, stress and anxiety, hydration level, and more. Traditionally, measuring ...

By Dr. Liji Thomas, MD A major UK study shows that commonly used home pulse oximeters can overestimate oxygen levels in ...