The magnetic detector or Marconi magnetic detector, sometimes called the "Maggie", was an early radio wave detector used in some of the first radio receivers to receive Morse code messages during the wireless telegraphy era around the turn of the 20th century. Developed in 1902 by radio pioneer Guglielmo Marconi from a method invented in 1895 by New Zealand physicist Ernest Rutherford it was used in Marconi wireless stations until around 1912, when it was superseded by vacuum tubes. It was widely used on ships because of its reliability and insensitivity to vibration. A magnetic detector was part of the wireless apparatus in the radio room of the RMS Titanic which was used to summon help during its famous 15 April 1912 sinking.
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| - مكشاف كهربائي ذهبي الوريقات (ar)
- Magnetischer Detektor (de)
- Détecteur magnétique (fr)
- Detector magnetico (it)
- Magnetic detector (en)
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| - المكشاف الكهربي ذهبي الوريقات يحتوي على شريطين رقيقين من أوراق الذهب متدليين في إناء زجاجي فيبتعدان عن بعضهما البعض عندما يشحنان، وتعتمد زاوية ابتعادهما على كمية الشحنة. وعلى الرغم من أن استخدام هذا المكشاف مستمر حتى الآن في التجارب الإيضاحية داخل الفصول الدراسية، فإن الإلكترومتر الإلكتروني قد حل محله. (ar)
- Der magnetische Detektor war eines der ersten Geräte, mit denen es möglich war, drahtlose Funksignale über Kopfhörer zu empfangen. Obwohl nicht ganz so empfindlich wie andere Detektoren zur damaligen Zeit, wurden magnetische Detektoren wegen ihrer Zuverlässigkeit bevorzugt auf Schiffen eingesetzt. (de)
- The magnetic detector or Marconi magnetic detector, sometimes called the "Maggie", was an early radio wave detector used in some of the first radio receivers to receive Morse code messages during the wireless telegraphy era around the turn of the 20th century. Developed in 1902 by radio pioneer Guglielmo Marconi from a method invented in 1895 by New Zealand physicist Ernest Rutherford it was used in Marconi wireless stations until around 1912, when it was superseded by vacuum tubes. It was widely used on ships because of its reliability and insensitivity to vibration. A magnetic detector was part of the wireless apparatus in the radio room of the RMS Titanic which was used to summon help during its famous 15 April 1912 sinking. (en)
- Au début du XXe siècle, le détecteur magnétique était l'un des premiers dispositifs capables de rendre les signaux radios audibles avec une paire d'écouteurs ou un casque audio. (fr)
- Il detector magnetico, detto anche detector Marconi, è uno dei primi rivelatori di onde radio della storia. All'inizio del XX secolo fu largamente utilizzato negli apparecchi radio per ricevere messaggi telegrafici trasmessi in codice Morse. (it)
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| - المكشاف الكهربي ذهبي الوريقات يحتوي على شريطين رقيقين من أوراق الذهب متدليين في إناء زجاجي فيبتعدان عن بعضهما البعض عندما يشحنان، وتعتمد زاوية ابتعادهما على كمية الشحنة. وعلى الرغم من أن استخدام هذا المكشاف مستمر حتى الآن في التجارب الإيضاحية داخل الفصول الدراسية، فإن الإلكترومتر الإلكتروني قد حل محله. (ar)
- Der magnetische Detektor war eines der ersten Geräte, mit denen es möglich war, drahtlose Funksignale über Kopfhörer zu empfangen. Obwohl nicht ganz so empfindlich wie andere Detektoren zur damaligen Zeit, wurden magnetische Detektoren wegen ihrer Zuverlässigkeit bevorzugt auf Schiffen eingesetzt. (de)
- The magnetic detector or Marconi magnetic detector, sometimes called the "Maggie", was an early radio wave detector used in some of the first radio receivers to receive Morse code messages during the wireless telegraphy era around the turn of the 20th century. Developed in 1902 by radio pioneer Guglielmo Marconi from a method invented in 1895 by New Zealand physicist Ernest Rutherford it was used in Marconi wireless stations until around 1912, when it was superseded by vacuum tubes. It was widely used on ships because of its reliability and insensitivity to vibration. A magnetic detector was part of the wireless apparatus in the radio room of the RMS Titanic which was used to summon help during its famous 15 April 1912 sinking. (en)
- Au début du XXe siècle, le détecteur magnétique était l'un des premiers dispositifs capables de rendre les signaux radios audibles avec une paire d'écouteurs ou un casque audio. (fr)
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