The pet of the gods, according to Hermann Helmholtz, showed his various talents at an early age. However, his main achievement lies in experimental evidence as to the existence of electromagnetic waves. The frequency measurement unit in the International System of Units (SI system) is named after him. Russian scientist and inventor Alexander Popov eternized the memory of Herz in a curious way. The first radiogram received by Popov during the meeting of Russian Physical and Chemical Society included only two words: “Heinrich Herz.”
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