Sound bullets in water

Sound waves are commonly used in applications ranging from ultrasound imaging to hyperthermia therapy, in which high temperatures are induced, for example, in tumors to destroy them. In 2010, researchers at Caltech led by ...

Future naval force may sail with the strength of titanium

Steel may have met its match: An Office of Naval Research (ONR)-funded project will produce a full-size ship hull section made entirely with marine-grade titanium using a welding innovation that could help bring titanium ...

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