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