In this quick science demo, I show how a simple 9 volt battery and a pad of steel wool can create sparks and fire when the circuit is completed. I start with safety glasses on and hair pulled back, ...

While it’s the easiest way to lay out a simple circuit for prototyping, breadboards are a pain. They are the ultimate kludge; they work well enough, but no one will ever say that a solderless ...

Here’s another hack that we would definitely discourage you from trying at home, 244 9 volt batteries wired in series. There’s really not much more to it than that, but [jersagfast] takes this setup ...

Drumroll please……. We are happy to announce that after much anticipation on the part of Inhabitat readers, Richart Lawson’s in-demand 9Volt Battery LED Lamp has ...