A dead satellite can become a high-speed hazard in an orbit that is already packed with working spacecraft. That risk is why ...

Researchers are developing a real-life tractor beam, with the goal of pulling defunct satellites out of geostationary orbit ...

This remarkable miniature rotorcraft is so lightweight and efficient that it can lift its own mass given nothing but sunlight. The entire thing weighs about as much as four paperclips, and it can fly ...

If you have an interest in audio there are plenty of opportunities for home construction of hi-fi equipment. You can make yourself an amplifier which will be as good as any available commercially, and ...

Electrostatic motors are now common in MEMS applications, but researchers at the University of Wisconsin and spinoff C-Motive Technologies have brought macroscale electrostatic motors back. [via ...

Whether you're a casual gardener or someone who needs to disinfect surfaces frequently for their actual job, you may have encountered the need for a sprayer at some point. In the past, all kinds of ...

What if the very principles that have powered industry for over a century were suddenly turned on their head? For decades, electromagnetic motors—reliant on copper windings and rare earth magnets—have ...

An electrostatic loudspeaker uses a thin plastic diaphragm residing between two perforated metal sheets (the grids or stator plates). The audio signal is applied to the grids out of phase. While one ...