They’re inexpensive and easy to use, and they help keep you safe when doing DIY electrical work. Solution: Test. Use. Verify. First, test the tester by holding it to a known live circuit, like a ...

A Planet Analog article, “ 2N3904: Why use a 60-year-old transistor? ” by Bill Schweber, inspired some interest in this old ...

Because the electron beam spot is so fine, the patterns reached scales of only a few hundreds of nanometers across. That ...

Scientists at Rice University have demonstrated a way to “write” light sources and nanoscale wiring directly onto crystals ...