Bits of material levitating against gravity, a stream of water deflected by invisible means, sparks of light appearing out of thin air; with observations like those, it’s a wonder that the early ...

Explore jaw-dropping high-voltage experiments with a Tesla transformer as we test an old Nokia phone, generate sparks, and demonstrate a mini Tesla lamp. See how electricity behaves, witness safe but ...

"Originally published in ... Popular mechanics ... For the average boy, with few tools, and a desire to learn the principles underlying the construction of the more common electrical ...