When [Electron Impressions] used a powerful ultrasonic array to project a narrow beam of sound toward a target, he described ...
Abstract: In this paper, a high gain and high directivity Vivaldi antenna based on near zero-index metamaterial (NZIM) is proposed. The antenna integrates a Vivaldi antenna featuring elliptical slots ...
Cathedral of St. Helena Raises Its Voice for All to Hear Crossroads Church Creates 360-Degree Immersive Worship Experience ...
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