Since the 1950s, scientists have used radio waves to uncover the molecular "fingerprints" of unknown materials, aiding in tasks as varied as scanning the human body with MRI machines and detecting ...
State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PRC Shenzhen R&D ...
Ideally, if you are going to transmit, you want a properly-tuned resonant antenna. But, sometimes, it isn’t practical. [Ham Radio Rookie] knew about random wire antennas but didn’t want a wire ...