In a series of experiments, Hertz verified that electromagnetic waves were being produced by the transmitter: when the transmitter sparked, small sparks also appeared across the receiver's spark gap, which could be seen under a microscope.
In a series of UHF experiments, Hertz verified that electromagnetic waves were being produced by the transmitter. When the transmitter sparked, small sparks also appeared across the receiver's spark gap, which could be seen under a microscope.