We may receive a commission on purchases made from links. One tool you'll find stashed in all the best electrician's tool backpacks is a multimeter. Most modern multimeters are of the digital variety, ...

Frederik Dostal explains the rise of the ideal diode and how it can be used to develop more robust power systems.

Dhananjay Gadre] happened across a useful little trick the other day. Take any old 1N4148 or 1N914 glass-package signal diode and wire it up right, and you’ve got yourself a nifty little IR ...

After five years — if you are lucky — of interviews with immigration agents, dealing with changing policies, and thousands of dollars in fees, it’s finally time to become a U.S. citizen. But would you ...

Mellow Labs] wanted to grab a multimeter that could do Bluetooth. Those are cheap and plentiful, but the Bluetooth software was, unsurprisingly, somewhat lacking. A teardown shows a stock ...

From protest signs to viral posts, students have pushed free speech boundaries generation after generation. Whether it’s a political banner or a rant on TikTok, Supreme Court rulings still decide what ...

If you're looking to get into automotive electrical testing, Harbor Freight has just the right kit for you to get started. Here's what it does.

Bounced checks can mean fees and even criminal charges. Contact both the recipient and bank and try to pay quickly. Many, or all, of the products featured on this page are from our advertising ...

An office breathing test typically means you blow into a machine that measures how much air your lungs can take in and how quickly and forcefully you can blow it out. These numbers tell your doctor if ...

The Self-Administered Gerocognitive Exam, known as SAGE, is a short pen-and-paper test to detect the early signs of cognitive, memory, or thinking impairments. The exam is meant to evaluate your ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...