Create a focused speaker so your music targets only the listener. That demodulates at 40 kilohertz, with an H-bridge and ...

If you wanted to build a robot that chased light, you might start thinking about Raspberry Pis, cameras, and off-the-shelf computer vision systems. However, it needn’t be so complex. [Ed] of ...

Abstract: A hollow ultrasonic motor (USM) was employed as the gimbal actuator in a novel single-gimbal control moment gyroscope (SGCMG) configuration, capitalizing on its superior torque-density ...

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