Technology

Material that sends sound from water to air could help eavesdroppers

Material that sends sound from water to air could help eavesdroppers

Sound usually can’t journey between air and water

ICP/incamerastock/Alamy

A fabric that may transport underwater sounds into the air, permitting them to be heard clearly above the water’s floor, might be used for monitoring aquatic environments or eavesdropping on underwater communications.

Sound usually can’t journey between water and air due to a mismatch in densities between the 2 mediums. It as an alternative displays on the boundary.

Now, Bin Liang at Nanjing College in China and his colleagues have developed a fabric that enables nearly the entire sound to cross …

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