Wearable health sensors such as photoplethysmography (PPG) wristbands, ECG patches and multi-modal biometric devices are typically developed and calibrated under controlled laboratory conditions.

Wrist pulse oximeters can look similar, making it hard to decide which one to buy. This in-depth guide covers everything you need to know to find your best fit.

A biomechanical well plate inspired by the pressure-sensing lateral line of fish can wirelessly monitor the pulse of multiple ...

How nitrous works. How does a nitrous oxide system increase horsepower? By adding nitrous oxide to an intake charge, an engine can burn more fuel, thus creating more power. This video will explain how ...

One of the most important measurements we make while tuning an engine is finding out what the actual balance of air and fuel was inside the engine. It doesn’t matter if we have a carburetor, port ...

So you either have hardware underway, or are considering getting rusEFI hardware. This manual is intended for those that are using purchased hardware. If you are not, don't worry, we also encourage ...

Forced induction is getting more and more popular with automakers. Turbocharging is an effective way to add performance to your vehicle, even if it didn’t come equipped with it from the factory. And ...

The Apple Watch Series 10 has a slimmer design and a brighter screen, while the Series 8 has an active blood oxygen sensor. Should you trade in your old Series 8 or keep it? We're here to help you ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. Black Friday is always a ...

While this year’s Apple Watch lineup may not look significantly different from what’s come before, the established designs belie the impressive new capabilities that Apple has packed into its new ...

Hybrid integration of photonic chips with electronic and micromechanical circuits is projected to bring about miniature, but still highly accurate and reliable, laser spectroscopic sensors for both ...