When we look at an object with our eyes, or with a camera, we can automatically gather enough pixels of light at visible wavelengths to have a clear image of what we see. However, to visualize a ...

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 ...

Pulse measurement equipment is now easier to use than ever before, with many devices offering easy-to-align solutions and plug-and-play computer operation, reports Neil Savage. Ultrafast lasers, which ...

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 ...

Ultrashort pulses have been measured in both space and time at and near a focus for the first time. The researchers hope that their technique will help scientists to detect and compensate for ...

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 ...

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

Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels (hypoxaemia) give ...