No sound from app when using reflector 3
![no sound from app when using reflector 3 no sound from app when using reflector 3](https://i.ytimg.com/vi/5Nq15oXE5DM/maxresdefault.jpg)
Without this movement of molecules, the sound could not travel, which is why there is no sound in a vacuum.Ī basic acoustic levitator has two main parts - a transducer, which is a vibrating surface that makes the sound, and a reflector. As the side of the bell moves back in, it pulls the molecules apart, creating a lower-pressure region called a rarefaction. This area of higher pressure is a compression. As one side of the bell moves out, it pushes the air molecules next to it, increasing the pressure in that region of the air. if you strike a bell, the bell vibrates in the air. Third, the sound is a vibration that travels through a medium, like a gas, a liquid or a solid object. The particles in gasses, like the ones that make up air, are simply farther apart and move faster than the particles in liquids. Air also moves like water does - in fact, some aerodynamic tests take place underwater instead of in the air. Like liquids, air is made of microscopic particles that move in relation to one another. Second, the air is a fluid that behaves essentially the same way liquids do. Scientists haven't decided exactly what causes this attraction, but they believe it exists everywhere in the universe. An enormous object, like the Earth, easily attracts objects that are close to it, like apples hanging from trees. First, gravity is a force that causes objects to attract one another. To understand how acoustic levitation works, you first need to know a little about gravity, air and sound.