This is different mechanism from the sound laser or SASER. The sound laser works like a laser, with a cavity where particles are bounced back and forth to stimulate a highly coherent beam of waves.
I’m not sure if this new mechanism is definitely better than the existing sound laser?
They used a concave disk-like speaker to produce sound. This solid shape makes the sound waves kind of spin around themselves like a tornado or one of those bubble rings you see people blow underwater [1] instead of a normal pressure wave that goes in all directions.
The tornado sound wave can only move forward and once it hits something is dissipated and doesn't reflect the sound.
I've only skimmed the article/paper and I also dont' understand, so I'm just as ignorant as you, but there is such a thing as a Tesla valve that is a static object that allows water to flow in one direction [0]. I would assume that maybe they can make little vortices of air/liquid (as the comment by kylebenzle suggests) that are dynamic and create a similar structure as it evolves.
This is different mechanism from the sound laser or SASER. The sound laser works like a laser, with a cavity where particles are bounced back and forth to stimulate a highly coherent beam of waves.
I’m not sure if this new mechanism is definitely better than the existing sound laser?
This seems to be similar to a microwave circulator. https://en.wikipedia.org/wiki/Circulator
I read the article and still don’t get it. Anyone want ELI5?
They used a concave disk-like speaker to produce sound. This solid shape makes the sound waves kind of spin around themselves like a tornado or one of those bubble rings you see people blow underwater [1] instead of a normal pressure wave that goes in all directions.
The tornado sound wave can only move forward and once it hits something is dissipated and doesn't reflect the sound.
1. https://youtu.be/t2kvEC852MI?si=QJjinL7AK6ZZS_SO
It is a hotel revolving door for sound waves.
But the door is also a sound wave.
I've only skimmed the article/paper and I also dont' understand, so I'm just as ignorant as you, but there is such a thing as a Tesla valve that is a static object that allows water to flow in one direction [0]. I would assume that maybe they can make little vortices of air/liquid (as the comment by kylebenzle suggests) that are dynamic and create a similar structure as it evolves.
[0] https://en.wikipedia.org/wiki/Tesla_valve
Audible laser?
Line of sight audio would be wonderful in a crowd.
We already knew a way - a shockwave
A shockwave does not travel linearly.
I just want a way to not hear my neighbor's 10 yo bounce a basketball for 3 hours a day
Classical music while you're outside
Have to wait for them to discover girls, or boys...