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Own every card of: Telecommunications.
Sending a message faster than a horse was a challenge of the 19th century. The telegraph linked continents. The wire then carried the voice. Radio, television and satellites removed the wires and the distances. Each step brought people a little closer.
The start of their anecdote. The album's other cards are for you to discover in the game.
by Valdemar Poulsen
A singing electric arc: around 1899 William Duddell had made a carbon arc lamp oscillate at audio frequencies. A Danish engineer took up the question and raised the efficiency and frequency to the level wanted.
Photo: Clemens PFEIFFER (CC BY 2.5)
by Émile Baudot
A farmer's son who was meant to till the land like his parents received only a primary education. Self-taught, he became a telegraph engineer.
Photo: Ricardo Ferreira de Oliveira (CC BY-SA 3.0)
by Giovanni Caselli
A drawing traced with an insulating pencil on a conductive tin sheet is scanned by a stylus regulated by a heavy pendulum. An Italian priest and physicist exiled in Florence presented a prototype of this device in 1856.
Photo: Alessandro Nassiri for Museo nazionale scienza e tecnologia, Milano (CC BY-SA 4.0)
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