I built an experimental thermopile using a heating resistor to test the linearity and accuracy of laser power measurements, ...

The Centers for Disease Control and Prevention (CDC) has paused its diagnostic testing for a host of infectious diseases, including rabies. The CDC on Monday posted a list of 27 tests that it either ...

The federal government’s disease-tracking agency has paused its diagnostic testing for rabies, mpox and a number of other infectious diseases. Subscribe to read this story ad-free Get unlimited access ...

If you don't feel well, you may worry that you have COVID-19. The only way to know for sure is to take a test. At-home tests can tell whether you have the virus right now. More specialized antibody ...

A number of instruments are heavily dependent on the performance of the detector at their core, including pyranometers designed to measure broadband solar irradiance (generally 300 to 3000 nm), and ...

The Rorschach test is a psychological test designed by psychiatrist Hermann Rorschach in the early 1900s. The test involves presenting a subject with images of inkblots; the person then describes what ...

Thermopile sensors offer a reliable way to measure temperature without physical contact, making them ideal for real-world applications where speed, safety, and precision matter. Whether you are ...

Diabetes test strips are an easy way to test your blood sugar, aka your glucose levels. This is important for people with diabetes. The strips work with glucose meters to “read” your blood sugar ...

If you’re experiencing a sluggish internet connection, it’s probably time to check the speed. We’ll show you several ways to measure the speed of your internet connection using on-board tools in ...

If it seems like everyone in your run club is talking about VO2 max these days, we wouldn’t be surprised. This metric—which is essentially a measure of your cardio fitness—is a zeitgeisty topic, ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...

The Food and Drug Administration on Monday approved Guardant Health’s blood test, called Shield, to screen for colon cancer. The test isn't meant to replace colonoscopies, but is generating enthusiasm ...