“Researchers have demonstrated that a laser can transmit an audible message to a person without any type of receiver equipment.”
https://phys.org/news/2019-01-technology-lasers-transmit-audible-messages.html
“Researchers have demonstrated that a laser can transmit an audible message to a person without any type of receiver equipment.”
https://phys.org/news/2019-01-technology-lasers-transmit-audible-messages.html