火花送信機
1. Spark-gap transmitterA spark-gap transmitter is a device for generating radio frequency electromagnetic waves using a spark gap. These devices served as the transmitters for most wireless telegraphy systems for the first three decades of radio (1887–1916) and the first demonstrations of practical radio were carried out using them.
Read “Spark-gap transmitter” on English Wikipedia
Read “火花送信機” on Japanese Wikipedia
Read “Spark-gap transmitter” on DBpedia
Read “Spark-gap transmitter” on English Wikipedia
Read “火花送信機” on Japanese Wikipedia
Read “Spark-gap transmitter” on DBpedia
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