As I review the events of my past life I realize how subtle
are the influences that shape our destinies. An incident of my youth may
serve to illustrate. One winter's day I managed to climb a steep
mountain, in company with other boys. The snow was quite deep and a warm
southerly wind made it just suitable for our purpose. We amused
ourselves by throwing balls which would roll down a certain distance,
gathering more or less snow, and we tried to out-do one another in this
sport. Suddenly a ball was seen to go beyond the limit, swelling to
enormous proportions until it became as big as a house and plunged
thundering into the valley below with a force that made the ground
tremble. I looked on spellbound incapable of understanding what had
happened. For weeks afterward the picture of the avalanche was before my
eyes and I wondered how anything so small could grow to such an immense
size.
Ever since that time the magnification of feeble actions
fascinated me, and when, years later, I took up the experimental study
of mechanical and electrical resonance, I was keenly interested from the
very start. Possibly, had it not been for that early powerful impression
I might not have followed up the little spark I obtained with my coil
and never developed my best invention, the true history of which I will
tell.
Many technical men, very able in their special departments, but
dominated by a pedantic spirit and nearsighted, have asserted that
excepting the induction motor, I have given the world little of
practical use. This is a grievous mistake. A new idea must not be judged
by its immediate results. My alternating system of power transmission
came at a psychological moment, as a long sought answer to pressing
industrial questions, and although considerable resistance had to be
overcome and opposing interests reconciled, as usual, the commercial
introduction could not be long delayed. Now, compare this situation with
that confronting my turbines, for example. One should think that so
simple and beautiful an invention, possessing many features of an ideal
motor, should be adopted at once and, undoubtedly, it would under
similar conditions. But the prospective effect of the rotating field was
not to render worthless existing machinery; on the contrary, it was to
give it additional value. The system lent itself to new enterprise as
well as to improvement of the old. My turbine is an advance of a
character entirely different. It is a radical departure in the sense
that its success would mean the abandonment of the antiquated types of
prime movers on which billions of dollars have been spent. Under such
circumstances, the progress must need be slow and perhaps the greatest
impediment is encountered in the prejudicial opinions created in the
minds of experts by organized opposition.
Only the other day, I had a disheartening experience when I met
my friend and former assistant, Charles F. Scott, now professor of
Electric Engineering at Yale. I had not seen him for a long time and was
glad to have an opportunity for a little chat at my office. Our
conversation, naturally enough, drifted onto my turbine and I became
heated to a high degree. "Scott," I exclaimed, carried away by the
vision of a glorious future, "My turbine will scrap all the heat engines
in the world." Scott stroked his chin and looked away thoughtfully, as
though making a mental calculation. "That will make quite a pile of
scrap," he said, and left without another word!
These and other inventions of mine, however, were nothing more
than steps forward in a certain directions. In evolving them, I simply
followed the inborn instinct to improve the present devices without any
special thought of our far more imperative necessities. The "Magnifying
Transmitter" was the product of labors extending through years, having
for their chief object, the solution of problems which are infinitely
more important to mankind than mere industrial development.
If my memory serves me right, it was in November, 1890, that I
performed a laboratory experiment which was one of the most
extraordinary and spectacular ever recorded in the annal of Science. In
investigating the behavior of high frequency currents, I had satisfied
myself that an electric field of sufficient intensity could be produced
in a room to light up electrodeless vacuum tubes. Accordingly, a
transformer was built to test the theory and the first trial proved a
marvelous success. It is difficult to appreciate what those strange
phenomena meant at the time. We crave for new sensations, but soon
become indifferent to them. The wonders of yesterday are today common
occurrences. When my tubes were first publicly exhibited, they were
viewed with amazement impossible to describe. From all parts of the
world, I received urgent invitations and numerous honors and other
flattering inducements were offered to me, which I declined. But in 1892
the demand became irresistible and I went to London where I delivered a
lecture before the Institution of Electrical Engineers.
It has been my intention to leave immediately for Paris in
compliance with a similar obligation, but Sir James Dewar insisted on my
appearing before the Royal Institution. I was a man of firm resolve, but
succumbed easily to the forceful arguments of the great Scotchman. He
pushed me into a chair and poured out half a glass of a wonderful brown
fluid which sparkled in all sorts of iridescent colors and tasted like
nectar. "Now," said he, "you are sitting in Faraday's chair and you are
enjoying whiskey he used to drink." (Which did not interest me very
much, as I had altered my opinion concerning strong drink). The next
evening I have a demonstration before the Royal Institution, at the
termination of which, Lord Rayleigh addressed the audience and his
generous words gave me the first start in these endeavors. I fled from
London and later from Paris, to escape favors showered upon me, and
journeyed to my home, where I passed through a most painful ordeal and
illness.
Upon regaining my health, I began to formulate plans for the
resumption of work in America. Up to that time I never realized that I
possessed any particular gift of discovery, but Lord Rayleigh, whom I
always considered as an ideal man of science, had said so and if that
was the case, I felt that I should concentrate on some big idea.
At this time, as at many other times in the past, my thoughts
turned towards my Mother's teaching. The gift of mental power comes from
God, Divine Being, and if we concentrate our minds on that truth, we
become in tune with this great power. My Mother had taught me to seek
all truth in the Bible; therefore I devoted the next few months to the
study of this work.
One day, as I was roaming the mountains, I sought shelter from
an approaching storm. The sky became overhung with heavy clouds, but
somehow the rain was delayed until, all of a sudden, there was a
lightening flash and a few moments after, a deluge. This observation set
me thinking. It was manifest that the two phenomena were closely
related, as cause and effect, and a little reflection led me to the
conclusion that the electrical energy involved in the precipitation of
the water was inconsiderable, the function of the lightening being much
like that of a sensitive trigger. Here was a stupendous possibility of
achievement. If we could produce electric effects of the required
quality, this whole planet and the conditions of existence on it could
be transformed. The sun raises the water of the oceans and winds drive
it to distant regions where it remains in a state of most delicate
balance. If it were in our power to upset it when and wherever desired,
this mighty life sustaining stream could be at will controlled. We could
irrigate arid deserts, create lakes and rivers, and provide motive power
in unlimited amounts. This would be the most efficient way of harnessing
the sun to the uses of man. The consummation depended on our ability to
develop electric forces of the order of those in nature.
It seemed a hopeless undertaking, but I made up my mind to try
it and immediately on my return to the United States in the summer of
1892, after a short visit to my friends in Watford, England; work was
begun which was to me all the more attractive, because a means of the
same kind was necessary for the successful transmission of energy
without wires.
At this time I made a further careful study of the Bible, and
discovered the key in Revelation. The first gratifying result was
obtained in the spring of the succeeding year, when I reaching a tension
of about 100,000,000 volts - one hundred million volts - with my conical
coil, which I figured was the voltage of a flash of lightening. Steady
progress was made until the destruction of my laboratory by fire, in
1895, as may be judged from an article by T.C. Martin which appeared in
the April number of the "Century Magazine". This calamity
set me back in many ways and most of that year had to be devoted to
planning and reconstruction. However, as soon as circumstances
permitted, I returned to the task.
Although I knew that higher electric-motive forces were
attainable with apparatus of larger dimensions, I had an instinctive
perception that the object could be accomplished by the proper design of
a comparatively small and compact transformer. In carrying on tests with
a secondary in the form of flat spiral, as illustrated in my patents,
the absence of streamers surprised me, and it was not long before I
discovered that this was due to the position of the turns and their
mutual action. Profiting from this observation, I resorted to the use of
a high tension conductor with turns of considerable diameter,
sufficiently separated to keep down the distributed capacity, while at
the same time preventing undue accumulation of the charge at any point.
The application of this principle enabled me to produce pressures of
over 100,000,000 volts, which was about the limit obtainable without
risk of accident. A photograph of my transmitter built in my laboratory
at Houston Street, was published in the " Electrical
Review" of November, 1898.
In order to advance further along this line, I had to go into
the open, and in the spring of 1899, having completed preparations for
the erection of a wireless plant, I went to Colorado where I remained
for more than one year. Here I introduced other improvements and
refinements which made it possible to generate currents of any tension
that may be desired. Those who are interested will find some information
in regard to the experiments I conducted there in my article, "The
Problem of Increasing Human Energy," in the "Century
Magazine" of June 1900, to which I have referred on a previous
occasion.
I will be quite explicit on the subject of my magnifying
transformer so that it will be clearly understood. In the first place,
it is a resonant transformer, with a secondary in which the parts,
charged to a high potential, are of considerable area and arranged in
space along ideal enveloping surfaces of very large radii of curvature,
and at proper distances from one another, thereby insuring a small
electric surface density everywhere, so that no leak can occur even if
the conductor is bare. It is suitable for any frequency, from a few to
many thousands of cycles per second, and can be used in the production
of currents of tremendous volume and moderate pressure, or of smaller
amperage and immense electromotive force. The maximum electric tension
is merely dependent on the curvature of the surfaces on which the
charged elements are situated and the area of the latter. Judging from
my past experience there is no limit to the possible voltage developed;
any amount is practicable. On the other hand, currents of many thousands
of amperes may be obtained in the antenna. A plant of but very moderate
dimensions is required for such performances. Theoretically, a terminal
of less than 90 feet in diameter is sufficient to develop an
electromotive force of that magnitude, while for antenna currents of
from 2,000-4,000 amperes at the usual frequencies, it need not be larger
than 30 feet in diameter. In a more restricted meaning, this wireless
transmitter is one in which the Hertzwave radiation is an entirely
negligible quantity as compared with the whole energy, under which
condition the damping factor is extremely small and an enormous charge
is stored in the elevated capacity. Such a circuit may then be excited
with impulses of any kind, even of low frequency and it will yield
sinusoidal and continuous oscillations like those of an alternator.
Taken in the narrowest significance of the term, however, it is a
resonant transformer which, besides possessing these qualities, is
accurately proportioned to fit the globe and its electrical constants
and properties, by virtue of which design it becomes highly efficient
and effective in the wireless transmission of energy. Distance is then
absolutely eliminated, there being no diminuation in the
intensity of the transmitted impulses. It is even possible to make
the actions increase with the distance from the plane, according to an
exact mathematical law. This invention was one of a number comprised in
my "World System" of wireless transmission which I undertook to
commercialize on my return to New York in 1900.
As to the immediate purposes of my enterprise, they were clearly
outlined in a technical statement of that period from which I quote,
"The world system has resulted from a combination of several original
discoveries made by the inventor in the course of long continued
research and experimentation. It makes possible not only the
instantaneous and precise wireless transmission of any kind of signals,
messages or characters, to all parts of the world, but also the
inter-connection of the existing telegraph, telephone, and other signal
stations without any change in their present equipment. By its means,
for instance, a telephone subscriber here may call up and talk to any
other subscriber on the Earth. An inexpensive receiver, not bigger than
a watch, will enable him to listen anywhere, on land or sea, to a speech
delivered or music played in some other place, however distant."
These examples are cited merely to give an idea of the
possibilities of this great scientific advance, which annihilates
distance and makes that perfect natural conductor, the Earth, available
for all the innumerable purposes which human ingenuity has found for a
line-wire. One far-reaching result of this is that any device capable of
being operated through one or more wires (at a distance obviously
restricted) can likewise be actuated, without artificial conductors and
with the same facility and accuracy, at distances to which there are no
limits other than those imposed by the physical dimensions of the earth.
Thus, not only will entirely new fields for commercial exploitation be
opened up by this ideal method of transmission, but the old ones vastly
extended. The World System is based on the application of the following
import and inventions and discoveries:
The Tesla Transformer:
This apparatus is in the production of electrical
vibrations as revolutionary as gunpowder was in warfare. Currents many
times stronger than any ever generated in the usual ways and sparks
over one hundred feet long, have been produced by the inventor with an
instrument of this kind.
The Magnifying Transmitter:
This is Tesla's best invention, a peculiar transformer
specially adapted to excite the earth, which is in the transmission of
electrical energy when the telescope is in astronomical observation.
By the use of this marvelous device, he has already set up electrical
movements of greater intensity than those of lightening and passed a
current, sufficient to light more than two hundred incandescent lamps,
around the Earth.
The Tesla Wireless System:
This system comprises a number of improvements and is the
only means known for transmitting economically electrical energy to a
distance without wires. Careful tests and measurements in connection
with an experimental station of great activity, erected by the
inventor in Colorado, have demonstrated that power in any desired
amount can be conveyed, clear across the globe if necessary, with a
loss not exceeding a few per cent.
The Art of
Individualization:
This invention of Tesla is to primitive tuning, what
refined language is to unarticulated expression. It makes possible the
transmission of signals or messages absolutely secret and exclusive
both in the active and passive aspect, that is, non-interfering as
well as non-interferable. Each signal is like an individual of
unmistakable identity and there is virtually no limit to the number of
stations or instruments which can be simultaneously operated without
the slightest mutual disturbance.
The Terrestrial
Stationary Waves:
This wonderful discovery, popularly explained, means that
the Earth is responsive to electrical vibrations of definite pitch,
just as a tuning fork to certain waves of sound. These particular
electrical vibrations, capable of powerfully exciting the globe, lend
themselves to innumerable uses of great importance commercially and in
many other respects. The first "World System" power plant can be put
in operation in nine months. With this power plant, it will be
practicable to attain electrical activities up to ten million
horse-power and it is designed to serve for as many technical
achievements as are possible without due expense. Among these are the
following:
- The inter-connection of existing telegraph exchanges or offices
all over the world;
- The establishment of a secret and non-interferable government
telegraph service;
- The inter-connection of all present telephone exchanges or offices
around the globe;
- The universal distribution of general news by telegraph or
telephone, in conjunction with the press;
- The establishment of such a "World System" of intelligence
transmission for exclusive private use;
- The inter-connection and operation of all stock tickers of the
world;
- The establishment of a "World System" - of musical distribution,
etc.;
- The universal registration of time by cheap clocks indicating the
hour with astronomical precision and requiring no attention whatever;
- The world transmission of typed or handwritten characters,
letters, checks, etc.;
- The establishment of a universal marine service enabling the
navigators of all ships to steer perfectly without compass, to
determine the exact location, hour and speak; to prevent collisions
and disasters, etc.;
- The inauguration of a system of world printing on land and sea;
- The world reproduction of photographic pictures and all kinds of
drawings or records...
I also proposed to make demonstration
in the wireless transmission of power on a small scale, but sufficient
to carry conviction. Besides these, I referred to other and incomparably
more important applications of my discoveries which will be disclosed at
some future date. A plant was built on Long Island with a tower 187 feet
high, having a spherical terminal about 68 feet in diameter. These
dimensions were adequate for the transmission of virtually any amount of
energy. Originally, only from 200 to 300 K.W. were provided, but I
intended to employ later several thousand horsepower. The transmitter
was to emit a wave-complex of special characteristics and I had devised
a unique method of telephonic control of any amount of energy. The tower
was destroyed two years ago (1917) but my projects are being developed
and another one, improved in some features, will be constructed.
On this occasion I would contradict the widely circulated
report that the structure was demolished by the government, which owing
to war conditions, might have created prejudice in the minds of those
who may not know that the papers, which thirty years ago conferred upon
me the honor of American citizenship, are always kept in a safe, while
my orders, diplomas, degrees, gold medals and other distinctions are
packed away in old trunks. If this report had a foundation, I would have
been refunded a large sum of money which I expended in the construction
of the tower. On the contrary, it was in the interest of the government
to preserve it, particularly as it would have made possible, to mention
just one valuable result, the location of a submarine in any part of the
world. My plant, services, and all my improvements have always been at
the disposal of the officials and ever since the outbreak of the
European conflict, I have been working at a sacrifice on several
inventions of mine relating to aerial navigation, ship propulsion and
wireless transmission, which are of the greatest importance to the
country. Those who are well informed know that my ideas have
revolutionized the industries of the United States and I am not aware
that there lives an inventor who has been, in this respect, as fortunate
as myself - especially as regards the use of his improvements in the
war.
I have refrained from publicly expressing myself on this
subject before, as it seemed improper to dwell on personal matters while
all the world was in dire trouble. I would add further, in view of
various rumors which have reached me, that Mr. J. Pierpont Morgan did
not interest himself with me in a business way, but in the same large
spirit in which he has assisted many other pioneers. He carried out his
generous promise to the letter and it would have been most unreasonable
to expect from him anything more. He had the highest regard for my
attainments and gave me every evidence of his complete faith in my
ability to ultimately achieve what I had set out to do. I am unwilling
to accord to some small-minded and jealous individuals the satisfaction
of having thwarted my efforts. These men are to me nothing more than
microbes of a nasty disease. My project was retarded by laws of nature.
The world was not prepared for it. It was too far ahead of time, but the
same laws will prevail in the end and make it a triumphal success.
Tesla Biography - Chapter VI