Código da imagem : C042/3265 Dimensões : 3.461 X 5.050 pixels Orientação : horizontal |
Data do upload no fornecedor : 13/12/2018 Tamanho máximo não comprimido : 50,0MB |
Pauta: | Guglielmo Marconi, Italian physicist and inventor, 1926 |
Título: | Guglielmo Marconi, Italian physicist and inventor, 1926 |
Descrição: | Guglielmo Marconi, Italian physicist and inventor, 1926. Marconi discovered a way in which waves could be used to send messages from one place to another without wires or cables. Having read about Heinrich Hertz's work with electromagnetic waves, he began experiments of his own, and in 1894 successfully sounded a buzzer 9 metres away from where he stood. In 1902 Marconi sent a radio signal across the Atlantic in Morse code. Five years later, a Canadian scientist, Reginald Fessenden, transmitted a human voice by radio for the first time. Marconi's inventiveness and business skills made radio communication a practical proposition. From An Outline of Christianity, The Story of Our Civilisation, volume 4: Christianity and Modern Thought, edited by RG Parsons and AS Peake, published by the Waverley Book Club (London, 1926). (Colorised black and white print). |
Coleção: | Science Photo Library |
Crédito: | The Print Collector/Heritage Images/SCIENCE PHOTO LIBRARY/ Fotoarena |
Disponibilidade: | imediata |
Direito de uso: | Direito controlado |
Autorização do(a) modelo: | não |
Autorização da propriedade: | não |
Esta imagem pode conter outros direitos. Cabe a quem usa, verificar e licenciar.
COPYRIGHT 2008-2025 FOTOARENA. PROIBIDA A CÓPIA OU REPRODUÇÃO SEM AUTORIZAÇÃO PRÉVIA.