posted on Sep, 24 2011 @ 09:27 AM
reply to post by MichelJCardin
By the use of an electro-magnetic field.
This is what Tesla had really discovered which was the power of oscillating expanding and collapsing electro-magnetic fields via what is called
And hence as to how our automobile's ignition systems function by the use of an Ignition Coil generating current to create a spark via the spark
The longer the coil generates current before it collapses the longer the spark is generated and of course, vice versa.
Read and Learn about how coils function which are called Inductors symbolized by "L" in Physics.
Inductance mathematically is defined by L di/dt....which Inductance is a function of current changing over time.
And is controlled by the number of windings of the coil.
Their inverse is Capacitance and when in a parallel circuit they oppose one another. Since capacitors are a time varying device generating current
which the inductor needs, you can use the capacitance as a timer of sorts to control the duration of electromagnetic field of the Inductor...and in
answer to your question as to how one would "keep it hovering".
This is what is running your computer and monitor at the moment and is fundamentally how electronic circuits are timed and controlled.
An inductor (or reactor or coil) is a passive two-terminal electrical component used to store energy in a magnetic field. An inductor's ability to
store magnetic energy is measured by its inductance, in units of henries. Any conductor has inductance (see "Straight wire conductor" equation below)
although the conductor is typically wound in loops to reinforce the magnetic field.
Due to the time-varying magnetic field inside the coil, a voltage is induced, according to Faraday's law of electromagnetic induction, which by Lenz's
Law opposes the change in current that created it. Inductors are one of the basic components used in electronics where current and voltage change with
time, due to the ability of inductors to delay and reshape alternating currents. Inductors called chokes are used as parts of filters in power
supplies or can be used to block AC signals from passing through a circuit.
edit on 24-9-2011 by nh_ee because: typos and additions