These home made transistors sacrifice a point contact diode to get the small chip of germanium, and form the other two electrodes with metal foil glued to paper. Given that germanium point contact ...

For example, you can insert a resistor, a capacitor, an inductor, a diode, or a transistor and get a readout of which pin is which. It seems like magic, but [Andreas Spiess] did the research on ...

From household chores and entertaining to garden care and camping, your trusty roll of aluminum foil is here to make life easier. Right alongside plastic wrap and parchment paper, aluminum foil enjoys ...