New cloaking devices could hide objects from water waves and currents

The materials can reduce drag and wave motion on items in fluids

cargo ship

CALM WATERS  A new cloaking device might help prevent waves from rocking ships loading cargo in ports.

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Invisibility cloaks are making a splash. Or rather, preventing splashes, perhaps.

Although the science fiction idea of an invisibility cloak is a Harry Potter–style device that makes objects invisible to the eye, physicists have branched out.