Nikola Tesla was an inventor and futurist whose contributions to the electrical revolution transformed daily life at the turn of the 20th century. He was a pioneer of AC electricity, induction motor, and X-rays, and contributed to the development of radio and television. He invented the Tesla coil to generate high-voltage, low-current, high-frequency alternating current (AC) electricity, and he thought it could be used for wireless power transmission. As a futurist, Tesla speculated on various technological possibilities for mankind, visualising robots that he called tele automatons, flying machines that used ambient energy and systems that exploited solar energy.
Tesla spoke of converting matter into energy, and he presumed that this could, in turn, be used for wireless applications. Evidence for this comes from the pen of Swami Vivekananda whom he met in 1896 at a party organised by the actress Sarah Bernhardt. The philosopher and celebrity Vivekananda had knowledge of Indian physics. It is generally accepted that he changed the world by bringing the movement for self-knowledge to America and influenced some of the greatest minds of the 20th century. This is what Vivekananda had to say of that meeting in a letter dated February 13, 1896: ‘Mr. Tesla was charmed to hear about the Vedantic prana and akasha and the kalpas. He thinks he can demonstrate mathematically that force and matter are reducible to potential energy. I am to go to see him next week to get this mathematical demonstration. In that case Vedantic cosmology will be placed on the surest of foundations. I clearly see their perfect union with mod- ern science and the elucidation of one will be followed by that of the other.’
As we know, Tesla did not succeed in showing this equivalence of mass and energy, and the equation E = mc2 was published just a few years afterwards. However, even after the publication of this equation, Tesla wrote about future possibilities related to wireless energy transmission that went beyond standard physics.
In this note, I present Tesla’s general ideas in the context of akasa of Indian physics, which is supposed to be interconvertible with matter and other forms of energy. I argue that this property of akasa, which has not been discussed in relation to Tesla, was the reason why he was so persistent in developing new schemes for remote transmission of energy.
Tesla’s life
A hundred years ago, Tesla was a superstar. He competed with Thomas Edison, inventor and businessman, over what should be the industry standard for power transmission. Tesla was in favour of AC and Edison for direct current (DC), and Tesla won; so in the sense of delivery of electric power, we live in the Age of Tesla.
Tesla was born on July 10, 1856, in what is now Smiljan, Croatia. His father was a Serbian Orthodox priest. He studied engineering in Graz, Austria, but never graduated. Next, he worked at the Central Telephone Exchange in Buda-Pest, where he got the idea for the induction motor. After failing to get people interested in this invention, Tesla, in 1884, decided to leave Europe for America.
Tesla first worked for Thomas Edison, but they parted ways very soon. In 1885, he got backing from the Tesla Electric Light Company to improve arc lighting. This venture failed, and for some time, he worked as a labourer. In 1887, he found backing for his AC electric system, and this became Tesla Electric Company. He filed for many patents and soon attracted the attention of George Westinghouse, who bought his patents for US$ 60,000 in cash and stock in the Westinghouse Corporation.
Tesla, through Westinghouse, developed a range of electrical devices. His inventions include an AC induction motor, power sources and a generator of high-frequency currents. The Westinghouse Corporation was chosen to supply the lighting at the 1893 World’s Exposition in Chicago, which provided publicity for his AC system. Two years later, Tesla designed an AC hydroelectric power plant at Niagara Falls that was used to supply power to the city of Buffalo. These successes soon made the AC system the pre-eminent power system of the world.
In 1900, Tesla began working on a global wireless communication system – to be transmitted through a large electrical tower – for sharing information and providing free electricity throughout the world. He received funding for the project and, in 1901, built a laboratory with a power plant and a huge transmission tower on Long Island, New York, known as Wardenclyffe. His idea was to use the earth as a means of return of current. He envisioned a machine which, to explain its operation in plain language, resembled a pump in its action, drawing electricity from the earth and driving it back into the same at an enormous rate, thus creating ripples or disturbances which, spreading through the earth as through a wire, could be detected at great distances by carefully at- tuned receiving circuits. In this manner, I was able to transmit to a distance not only feeble effects for the purposes of signalling, but considerable amounts of energy, and later discoveries I made convinced me that I shall ultimately succeed in conveying power without wires for industrial purposes, with high economy, and to any distance, however great.
As doubts about the plausibility of Tesla’s system arose and his rival, Gug- Guglielmo Marconi, won the financial support of Andrew Carnegie and Thomas Edison, Tesla was forced to abandon the project. The Wardenclyffe staff was laid off in 1906, and by 1915, the site had fallen into foreclosure. Two years later, Tesla declared bankruptcy.
Tesla’s general ideas on wireless transfer of energy
Tesla concluded that the atmosphere itself could conduct electricity, and this could be used to send energy without the need for wires. He had two broad ideas:
1. Electricity can be conducted through the atmosphere, and he hoped that methods could be devised to control its distribution from one place to another. He believed that very high voltages in the range of 15–20 million volts could be used for this purpose at a height of 30,000–35,000 feet above sea level. He argued that such a system would be more efficient than an omnidirectional broad-casting antenna as is the case of radio transmissions, and thus allow the construction of a ‘World Wireless Telephony and Telegraphy System’. He believed this would make the transmission of simultaneous and non-interfering messages practical in a manner which is reminiscent of modern computer networks.
2. Energy could be transmitted through the earth by exploiting its resonances. ‘The chief discovery, which satisfied me thoroughly as to the practicability of my plan, was made in 1899 at Colorado Springs, where I carried on tests with a generator of fifteen hundred kilowatt capacity and ascertained that under certain conditions the current was capable of passing across the entire globe and returning from the antipodes to its origin with undiminished strength. It was a result so unbelievable that the revelation at first almost stunned me. I saw in a flash that by properly organised apparatus at sending and receiving stations, power virtually in unlimited amounts could be conveyed through the earth at any distance, limited only by the physical dimensions of the globe, with an efficiency as high as ninety-nine and one- half per cent.
Tesla also believed that energy could be extracted from the sun’s rays and, in this sense, he was a pioneer of solar energy as well. He thought that directed electromagnetic energy in the atmosphere could be used for the propulsion of flying machines without the need for ground connection.
Akasa and Indian physics
Indian physical ideas, of which the concept of the akasa is a part, are described in the Vaisesika system. It has categories not only for space-time–matter but also for attributes related to the perception of matter. It starts with six categories (padarthas) that are nameable and knowable. Nothing beyond these six fundamentals is necessary because they are sufficient to describe everything in the universe, from concrete matter to the abstract atom.
The six categories are – substance, quality, motion, universal, particularity and inherence. The first three have objective existence, and the last three are a product of intellectual discrimination. Universals are recurrent generic properties in substances, qualities and motions. Particularities reside exclusively in the eternal, non-composite substances, that is, in the individual atoms, souls and minds, and in the unitary substances ether, space and time. Inherence is the relationship between entities that exist at the same time. It is the binding amongst categories that makes it possible to synthesize experience.
Of the six categories, the basic one is that of substance and the other five are qualities associated with the substance. Observers belong to the system in an integral fashion, for, if there were no sentient beings in the universe, there would be no need for these categories. There are nine classes of substances, some of which are non-atomic, some atomic, and others all-pervasive. The non-atomic ground is provided by the three substances of akasa, space, and time, which are unitary and indestructible; prthivī ,apas, tejas and vayu are atomic composed of indivisible and indestructible atoms. The basic atoms of prthivī, apas, tejas and vayu will be represented by P, Ap, T and V, respectively. The sequence of evolution of the elements, which occurs in extraordinary circumstances, is given as V T Ap P.
The ordinary molecules of matter have all the basic atoms present in them. The interactions of the atoms are governed by four different forces: P interacts with all four, Ap with three, T with two and V with one. The commentators of the Vaisesika claim that only P and Ap have mass; T and V do not. The four atoms are a function of four different subtle elements called Ru (rūpa), Ra (rasa), Ga (gandha) and Sp (sparśa). Symbolically, we may summarise this in terms of the following expressions.
P: 1 (Ru, Ra, Ga, Sp),
Ap: 2 (Ru, Ra, Sp),
T: 3 (Ru, Sp),
V: 4 (Sp).
Molecules that are comprised of many atoms may be represented by Molecule: (Pm, Apn, T, V), with mass equal to m Mass(P) +nMass(Ap), since T and V do not possess mass.
In this system, distinguishing characteristics and motion are essential for the classification of matter. Space and time are identified through the motion of matter or in relation to the motion of the sun. Among the substances, four are material (that is, consisting of atoms) and capable of motion, whereas others (time, space, akasa) are non-material and, therefore, no motion may be associated with them.
When the universe ceases to be at the end of the cosmic cycle (kalpa mentioned in Vivekananda’s letter), the matter is not annihilated; rather, it reaches a quiescent state where its atoms have no extrinsic motion and so becomes invisible, which appears similar to the conception of the state of the giant atom at the beginning of the cycle of creation. The lack of motion represents a cessation of time because time is a measure of change.
In an article written in 1907 but published in 1930, Tesla wrote about the use of akasa and prana to solve mankind’s greatest problems:
Long ago… [mankind] recognised that all perceptible matter comes from a primary substance, or tenuity beyond conception, filling all space, the Akasha or luminiferous ether, which is acted upon by the life-giving Prana or creative force, calling into existence, in never-ending cycles all things and phenomena. The primary substance, thrown into infinitesimal whirls of progressive velocity, becomes gross matter; the force subsides, the motion ceases, and matter disappears, reverting to the primary substance.
In the above quote, Tesla defines the akasa as ether, but then he associates properties to it that are not mentioned in the context of ether in the Western tradition and are true for akasa. We have mentioned earlier how, under certain conditions, the akasa can generate energy and give rise to atoms that constitute matter. In the reverse process, matter and energy can transform into akasa. It appears, therefore, that Tesla was not only hoping to convert one form of energy into another but also exploit theākāśa, which he may have visualised as a field similar to the electromagnetic field, to transmit energy from one place to another; his goal was to harness the primal energy within space itself.
It appears that Tesla was hoping to tap into the fundamental interconvertibility of akasa with matter and other forms of energy to develop new ways of harnessing and transmitting energy. In spite of some of his speculations not being practical, his intuition was to seek other novel ways for such interconversion.
Note further that Tesla’s use of prānais ultimately concerns the relationship between energy and information. Indian philosophy speaks of akasa serving as an intermediary between mind and matter, which to the subject is available as prana(e.g. Brahma Sutra 1.1.22-23, 2.4.9). Note further that the six ontological categories of the Vaisesika are neatly divided into three for matter and three for the mind of the observer. This was an issue that was not a part of the physics of Tesla’s times, but it has come into contemporary physics due to the problem of measurement of quantum mechanics to which the Copenhagen Interpretation provides one resolution (although it is not universally accepted). In von Neu mann’s orthodox version of this Interpretation, mind and matter are two distinct ontological categories, suggestive of the corresponding dichotomy in the Vai-sesika (though the two dichotomies should not be considered identical).
More recently, it has become accepted that the vacuum state is associated with a zero-point energy, and this zero-point energy has measurable effects. Indeed, the vacuum is teeming with the creation and destruction of particles, and some have visualised this as the akashic field. The idea of an akashic field that is the medium of consciousness has been proposed by the Hungarian scientist Ervin László12, who posits a field of information as the substance of the cosmos.
Although Vaisesika postulates that theākāśa is an element, it cannot be the medium that carries consciousness. Also, consciousness is not a new state of matter because if it were so, then the equations of physics are incomplete. Physics, as we know it, can only be about inert objects and not the experiencing self.
In conclusion, Tesla proposed several speculative systems of power and information transfer, some of which anticipated modern technological inventions. In speaking of the akasa he was considering processes and phenomena whose validity is yet to be demonstrated by experiments.
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