Create a focused speaker so your music targets only the listener. That demodulates at 40 kilohertz, with an H-bridge and ...
Mating calls and rituals can be intercepted, or drowned out, by invasive species. Scientists are just starting to understand ...
An emerging technique harnessing ultrasound may revolutionize treatment of fatal or hard-to-cure conditions, from cancer to Alzheimer’s and Parkinson’s diseases. Prior to focused ultrasound treatment, ...
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