Besides the death ray and the oscillator that could cause earthquakes, one Nikola Tesla invention still has the power to pique the interest of those fascinated by all things physics, even today: wireless electricity. By today’s standards, Nicola Tesla was something of a populist. Free electricity was unheard of then, and it’s still unheard of today. And like many of Tesla’s inventions, this one has given rise to a flurry of speculation, extending even to the Tunguska meteor mystery. Is wireless electricity even possible? And if…
