We are always impressed with something so simple can actually be so complex. For example, what would you think goes into an analog computer? Of course, a “real” analog computer has opamps that can do ...

Sometimes the simplest hacks can be the most useful or ingenious, and such is the case with [Keri Szafir]’s method of ensuring that potentiometers used in audio devices are matched. If you consider a ...

This is a preview. Log in through your library . Abstract A simple and inexpensive method of monitoring the movement of an isolated frog heart provides comparable results to those obtained with a ...