If you build engines, tune cars, or even just like mashing your foot on the throttle with conviction, you’ve probably heard the term “wideband O2 sensor” being thrown around at the track, dyno ...

IR sensors rely on an emitter (IR LED) and a detector (photodiode or photoresistor) to measure infrared light and convert it ...

We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are ...

University of Texas at Dallas researchers, in partnership with Texas-based biotech company EnLiSense, have demonstrated a ...

Image: Draper Eric Fossum, the inventor of the modern CMOS image sensor and a longtime friend of DPReview, was recently ...

A vehicle’s Check Engine light can turn any car ride into a harrowing experience. As soon as the check engine light illuminates, it’s hard not to hear the cha-ching sound of a ...

Could Luna beat Oura at the smart ring game?

Knowing a few precise mechanic terms can turn a confusing estimate into a clear conversation and keep you from paying for work you do not need. By understanding what these 14 concepts actually mean, ...

The Oura Ring does not directly measure blood pressure. This feature is not currently available on the device. Oura focuses on sleep quality, heart rate variability (HRV), resting heart rate, and body ...

Wearable health devices, such as smartwatches, have become commonplace, enabling the continuous monitoring of physiological ...

When the cell's recycling stations, the lysosomes, start leaking, it can become dangerous. Toxic waste risks spreading and ...

The light-sensitive tissue of birds’ eyes is not supplied with oxygen by blood vessels – instead, it powers itself with a ...