Ernst Walter Ruhmer

Born: 1878

Died: 1913

Is thematised in:

Empfänger für Lichttelephonie nach Ruhmer : Technikgeschichte | Physik | Elektrizität | Photoelektrizität
Metallband-Bogenlampe von Ruhmer : Technikgeschichte | Physik | Elektrizität | Drahtlose Telegraphie und Telephonie
Lichttelephonie mittels Selenzelle nach Ruhmer, Schema : Technikgeschichte | Physik | Elektrizität | Photoelektrizität
Sender für Lichttelephonie nach Ruhmer : Technikgeschichte | Physik | Elektrizität | Photoelektrizität

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Ernst Walter Ruhmer

Is thematised in:

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