æ輩ã¯ãã³ãã«ã»ãã¼ã ãâãã¤ã¯âã£ã¦è¨ããããã®ããã ãããæãããã¤ã¯ã好ãã ã(ç¬)ããã¤ã¯ããã©ã³ã¯é常ããã¤ã¯ã¨ç¥ãããããæ¥æ¬èªã§ã¯âé話å¨âãä¸å½èªã§ã¯â話çâã¨è¨ãããããã¡ãªã¿ã«ãè±èªã§ã¯ãã¤ã¯ï¼é話å¨ï¼ã®ãã¨ã "transmitter" ã¨ãè¨ããã¨è¨ããã¨ã§ãæè ææã®ãã©ã³ã¹ããã¿ã¼ãä¸å¿ã«ã´ã¿ã´ã¿æ¸ãã¦ãã¿ããã¨æããã´ã¿ã´ã¿æ¸ãã¦ããããã¤ã®éã«ããã«ã¿ããã«é·ããªã£ã¦ãã¾ã£ãã^^; æ¾éç¨(ï¼)ã«ã¼ãã³ã»ãã¤ã¯ ã«ã¼ãã³ã»ãã¤ã¯ã«é¢ãã¦ã¯å ¨ãç¥èããªãã 1920年代㮠WE 社ã®ããã«ã»ãã¿ã³å¼ã ããã é»è©±ç¨ãã³ãã»ãããå©ç¨ãã èªä½ 50MHz ãã³ãã£ç¡ç·æ© ã¾ãæåã¯ã«ã¼ãã³ã»ãã¤ã¯ã ãä¸çã§æåã«çºæããããã¤ã¯ããã©ã³ãããã®ã«ã¼ãã³ã»ãã¤ã¯ãããã確ãã1877å¹´ã«ã¨ã¸ã½ã³ (Thomas Alva Edison: 1847
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