New research challenges the thinking that sound cannot be heard in space, by demonstrating situations when sound can be transmitted in a vacuum.
for more insight on the paper. Maasilita mentioned that he actually found it surprising that "100 % of the power could be transmitted .”
He explained the situations in which a sound wave can jump or ‘tunnel’ across a vacuum gap, sharing that there are instances when “an incoming sound wave can be converted to a special sound wave that is localized [not] only on the surfaces of the solids, but on both sides of the gap .” It is this localization that makes it possible for the sound to transmit fully. “The coupling between the two surfaces is facilitated by electric fields, which can exist in vacuum, unlike the actual vibrations of the sound wave ,” he explained further.Utilizing such piezoelectric materials can make it possible to hear a scream in space, confirmed the researcher. It could work “across a gap below 1 m , but details would have to worked out how loud it would be,” he wrote in our email exchange.
One complication would be how well the sound produced inside the air-containing spacesuit could be converted to the right type of input mode in the piezoelectric material.
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