We don’t know why [stoppi71] needs to do gamma spectroscopy. We only know that he has made one, including a high-voltage power supply, a photomultiplier tube, and–what else–an Arduino. You also need a ...

A little over a year ago we’d written about a sub $100 muon detector that MIT doctoral candidate [Spencer Axani] and a few others had put together. At the time there was little more than a paper on ...

Switch-contact bounce is an unavoidable mechanical phenomenon and complicates the task of measuring contact resistance; this circuit uses a current source and classic analog peak-detector circuit to ...