The drive unit would take water into itself, separate the ionized molecules, and expose them to an electric field.
In other words it creates an electric field that doubles for sound.
They're using an electric field of very high frequency, but variable frequency.
This means a variation in the electric field between the filament and the plate.
These differences in appearances are accompanied by great difference in the strength of the electric field.
We have already seen that the sun is an electrified body, possessing its electric field, with its electric lines of force.
They're using an electric field all right, and projecting it.
It is very convenient to represent an electric field by means of what are called lines of electric force.
Let any line drawn in an electric field be divided up into small elements of length.
The lines of electric force will thus completely represent the electric field.
electric field |
The distribution in space of the strength and direction of forces that would be exerted on an electric charge at any point in that space. Electric fields themselves result directly from other electric charges or from changing magnetic fields. The strength of an electric field at a given point in space near an electrically charged object is proportional to the amount of charge on the object, and inversely proportional to the distance between the point and the object. See also electromagnetism, electrostatic force.