Anything with a laser has undeniable hacker appeal, even if the laser’s task is as pedestrian as sending data over a fiber ...

Thinking of tackling electrical repairs but don’t know where to start? With just a little knowledge–and less than $100 worth ...

This is a limited-time deal at Amazon that likely won’t stick around for long. So head over there and pick up the Fluke 107 ...

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

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 ...

If you’d like to fix or even diagnose anything involving electricity – whether it’s the energy that surges through a car, snowmobile, boat or even a wall socket or a random AAA remote control battery ...

Geiger-mode avalanche photodiodes (GM-APDs) are highly sensitive light detectors, capable of detecting single photons.

A battery-free sticker reads vitamin C levels from fingertip sweat by turning any drinking cup into a smart health sensor.

Equal resistors R added in series with both emitters will develop voltages Vr = I1*R and I2*R that will be equal if the ...