Victorian physicists said it couldn’t be done. Edison, who invented the light bulb, thought we would always be limited to short-range direct current. Tesla believed it was possible, and he ‘built’ the machine to prove it – right inside his head.

The Serbian genius honed every moving part in his 3D imagination, examining the device from all angles, constantly visualising the images. When he built the real machine, it was already perfect.

I love to visualise in three dimensions. Sometimes I picture machines, but most often I imagine strange animals – a dog with feathers, a six-legged horse, a neon deer. I study them from every angle, imagining how they move, run and sleep. Try it yourself – let the workshop of your mind run overtime and see what you invent.