In this article, I’ll explain more detail about this concept.
How does it work? It depends on how you want to use acoustic levitation for the most optimal results (what is the best acoustic levitation technique for what task, and more precisely for which person and situation).
An overview of acoustic levitation using a single object or a group
Here’s an overview for two very practical scenarios:
a single object: You want to levitate an object with two objects placed on both sides. The object (and the two objects) should be at different heights. If, for instance, you are using an ordinary kitchen cupboard, one of the two objects should be lower than the other.
You want to levitate an object with two objects placed on both sides. The object (and the two objects) should be at different heights. If, for instance, you are using an ordinary kitchen cupboard, one of the two objects should be lower than the other. a group: If two objects with different values of the amplitude of sound are placed on the same floor, and in the proper situation, the acoustic levitation will lift them up with ease.
In the first case, the object is the kitchen cupboard with two wooden shelves. It is not necessary to lift the entire cupboard because the acoustic levitation can lift the shelves. However, if one of the wooden shelves is slightly higher (but still low), you should place both other shelves slightly higher (but still the same).
The second case uses two objects placed on the same floor. They won’t lift up the entire floor with ease as in the case above, but they will lift each other up. This is the case of a kitchen table, which has a height of 1.6m and two shelves. I’ve also left the two floor surfaces at different heights to keep things simple.
The first object’s amplitude should be equal to that of the other object (the table). If both objects are exactly equal in amplitude, the acoustic lift will be negligible. However if one is high, the other one will be low.
Here I’ve been using 3:1.5 as a common scale of intensity, to be a general scale and not to be particular about the exact scales you use.
When to use acoustic levitation versus other acoustic levitation methods vs. a single object
There is no exact right or wrong answer here, in my opinion. You should experiment with
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