Sound has dimension, and it's sometimes easy to forget just how big sound can be. At 20 Hz we're talking about a 56.5-foot wavelength, calculated using 1130 feet per second as a typical value for the ...
Researchers have revealed how high-frequency sound waves can be used to build new materials, make smart nanoparticles and even deliver drugs to the lungs for painless, needle-free vaccinations. While ...
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