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, ...

Before the age of lithium batteries, any project needing to carry its own power had to rely on batteries that were much less energy-dense and affordable. In many ways, we take modern lithium ...

Transform ordinary citrus fruits into natural batteries! This experiment demonstrates how chemical energy can be converted into electrical energy using simple household items. You'll create enough ...