An optocoupler tester is a small device that helps verify whether an optocoupler is functioning properly or has failed. In labs and repair work, optocouplers often fail without clear signs. They may ...

An archaic DieHard device has seemingly died hard; is hacking it to resurrect a portion of its original function a worthwhile endeavor?

In this Q&A, you will learn about some of the technologies and techniques that are making it possible to address advanced packaging challenges.

The BPM Vision doesn't actually work with Withings' Cardio Check-Up—you need an ECG-enabled Withings tracker, like the ScanWatch 2 ($370), to use that feature. It's also bigger than the BPM Connect ...

Smith Could a simple blood test predict your risk of getting dementia years, or even decades, before you experience memory ...

It can be difficult to assess whether a seemingly healthy item is actually ultra-processed, but these two tests can help you find out.

Try searching for your own micrometeorites by collecting particulates from roofs or drain spouts. Use a magnet to see if any particles are attracted, and discard nonmagnetic ones. Use your microscope ...

Light aircraft often use a heading indicator as a way to know where they’re going. Retired instrumentation engineer [Don Welch] recreated a heading indicator of his own, using cheap ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Two early transistors in a sample box ...

Multi-die design using 2.5D and 3D technologies has emerged as a necessity to keep the pace of innovation. For all their benefits, these projects present new challenges. This post considers monitoring ...

Researchers from Ulsan National Institute of Science and Technology (UNIST) designed a low power semiconductor circuit ...