I’ve come across a couple of articles in the past few days that relate to synaesthesia in science – Both use water (sonar and sound respectively) as the means of bending our senses in entirely new ways.
Navies have used sonar for generations to detect objects underwater, but researchers at Cardiff University have developed a way to produce three dimensional images using sonar. It’s not entirely clear how they’re doing it, only that it has been done. I can only speculate that they’re using two or more sonar pings at a time, using some sort of motor to sweep the area back and forth or cleverly utilizing a moving boat’s GPS position relative to a single (or more) sonar to create the map.
Given the low cost of consumer-grade sonar, this could pave the way to mapping rooms on the cheap if I read into what little I know about the technology correctly.
The second article focuses (pardon the pun) on the use of lasers as a means to transfer sound. According to the BBC article: “The approach focuses laser light to produce bubbles of steam that pop and create tiny, localised explosions” which means that both the acoustic information and the rate in which the bubbles pop could have meaning to the receiver. In the first instance, sound could be potentially sent from the air into the water at different speeds/ rates/ etcetera, much like the way morse or modem code behaves. The second potential is for another form of acoustic imaging, although this seems less likely given it requires mirrors which don’t seem to behave well under water.
