An illustration of Guglielmo Marconi (1874-1937),then aged 21,in his father's garden at Pontecchio,conducting early experiments with a transmitter which produced a spark between two balls,one connected to a metal plate suspended in the air,the other | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / NYPL / Science Source |
Taille de l’image : | 2724 px × 4176 px |
Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
Property Release : | Non requis |
Restrictions : |
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