Nicola Tesla’s dream was to supply the entire planet with wireless communication. Even if in the end he could not realise this dream, his attempt led to countless brilliant inventions. One of them is the Tesla coil, which does indeed transmit energy without wires. Unfortunately, the signal intensity decreases rapidly with the distance, limiting its use to short-range interactions. Nevertheless, his coil paved the way for modern communication antennas, and served as inspiration for today’s wirelessly connected world.