Nikola Tesla
continued....
Seeing that the effect could grant humanity
enormous possibilities when once tamed, Tesla wished to study and implement
the radiant electrical action under much safer conditions. The very first
step, which he took before proceeding with this experimental line, was the
construction of special grounded copper barriers: shields to block the
electrical emanations from reaching him.
They were large, body-sized mantles of
relatively thick copper. He grounded these to insure his own complete
safety. In electrical terms, they formed a "Faraday Cage" around him. This
assembly would block out all static discharges from ever reaching Tesla
during the tests. Now he could both observe and write what he saw with
confidence.
Positioned behind his copper mantle, Tesla
initiated the action. ZZZZZZ ... the motorized switch whirring, dynamo
voltage interrupted several hundred times per second, the shock action was
now continuous. He felt a steady rhythm of electrostatic irritations right
through the barrier accompanied by a pressure wave, which kept expanding.
An impossibility. No electrical influence should have passed through the
amount of copper, which composed the shield. Yet this energetic effect was
penetrating, electrically shocking, and pressured. He had no words to
describe this aspect of the new phenomenon. The shocks really stung.
Tesla was sure that this new discovery would
produce a completely new breed of inventions, once tamed and regulated. Its
effects differed completely from those observed in high frequency
alternating current. These special radiant sparks were the result of
non-reversing impulses. In fact, this effect relied on the non-reversing
nature of each applied burst for its appearance. A quick contact charge by a
powerful high voltage dynamo was performing a feat of which no alternating
generator was capable. Here was a demonstration of "broadcast electricity".
Most researchers and engineers are fixed in
their view of Nikola Tesla and his discoveries. They seem curiously
rigidified in the thought that his only realm of experimental developments
laid in alternating current electricity. This is an erroneous conception
which careful patent study reveals. Few recognize the documented facts
that, after his work with alternating currents was completed, Tesla switched
over completely to the study of impulse currents. His patents from this
period to the end of his career are filled with the terminology equated
with electrical impulses alone.
The secret lay principally in the direct
current application in a small time interval. Tesla studied this time
increment, believing that it might be possible to eliminate the pain field
by shortening the length of time during which the switch contact is made. In
a daring series of experiments, he developed rapid mechanical rotary
switches, which handled very high direct voltage potentials. Each contact
lasted an average of one ten-thousandth second.
Exposing himself to such impulses of very low
power, he discovered to his joy and amazement that the pain field was nearly
absent. In its place was a strange pressure effect, which could be felt
right through the copper barriers. Increasing the power levels of this
device produced no pain increase, but did produce an intriguing increased
pressure field. The result of simple interrupted high voltage DC, the
phenomenon was never before reported except by witnesses of close lightning
strokes. This was erroneously attributed however to pressure effects in
air.
Not able to properly comprehend their nature at
first, Tesla also conservatively approached the pressure phenomenon as due
to air pressure. He had first stated that the pressure field effect was due
to sharp sound waves, which proceeded outward from the suddenly charged
line. In fact, he reported this in a little-known publication where he first
announced the discovery. Calling the pressure effects "electrified sound
waves", he described their penetrating nature in acoustic terms.
Further experimentation however, gradually
brought the new awareness that both the observed pressure effect and
electrical shock fields were not taking place in air at all. He demonstrated
that these actions could take place in oil immersions. Impulse charged lines
were placed in mineral oil and carefully watched. Strong pressure
projections emerged from sharp wire ends in the oil, as if air were
streaming out under high pressure.
Tesla first believed that this stream was
wire-absorbed air driven off by electrical pressure. Continual operation of
the phenomenon convinced him that the projected stream was not air at all.
Furthermore, he was not at a loss to explain the effect, but was reluctant
to mention his own theory of what had been generated by high voltage direct
current impulses.

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