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Build a Radio Wave Detector With Balls of Aluminum Foil!
用铝箔球自制无线电波探测器，边玩边学电磁波原理，有趣又有料！
Here’s how you can hack together a radio transmitter and receiver out of stuff you have at home—and explore the weirdness of wireless.
用铝箔球自制无线电波探测器，边玩边学电磁波原理，有趣又有料！
Here’s how you can hack together a radio transmitter and receiver out of stuff you have at home—and explore the weirdness of wireless.