Seven
years after Hertz, Jagdish Chandra Bose, working at
Calcutta (now Kolkata), succeeded in producing and
observing electromagnetic waves of much shorter
wavelength (25 mm to 5 mm) His experiment, like that
of Hertz’s, was confined to the laboratory At around the same time, Guglielmo Marconi in Italy
followed Hertz’s work and succeeded in transmitting
electromagnetic waves over distances of many kilometres Marconi’s experiment marks the beginning of the field of
communication using electromagnetic waves