Nicola Tesla free energy
Nikola Tesla used ancient Sanskrit terminology in his descriptions of natural phenomena. As early as 1891 Tesla described the universe as a kinetic system filled with energy which could be harnessed at any location. His concepts during the following years were greatly influenced by the teachings of Swami Vivekananda. Swami Vivekananda was the first of a succession of eastern yogi's who brought Vedic philosophy and religion to the west. After meeting the Swami and after continued study of the Eastern view of the mechanisms driving the material world, Tesla began using the Sanskrit words Akasha, Prana, and the concept of a luminiferous ether to describe the source, existence and construction of matter. This paper will trace the development of Tesla's understanding of Vedic Science, his correspondence with Lord Kelvin concerning these matters, and the relation between Tesla and Walter Russell and other turn of the century scientists concerning advanced understanding of physics. Finally, after being obscured for many years, the author will give a description of what he believes is the the pre-requisite for the free energy systems envisioned by Tesla.
By the year 1891, Nikola Tesla had invented many useful devices. These included a system of arc lighting (1886), the alternating current motor, power generation and transmission systems (1888), systems of electrical conversion and distribution by oscillatory discharges (1889), and a generator of high frequency currents (1890), to name a few. The most well known patent centers around an inspiration that occurred while walking with a friend in a park in Budapest, Hungry. It was while observing the sunset that Tesla had a vision of how rotating electromagnetic fields could be used in a new form of electric motor. his led to the well known system of alternating current power distribution. In 1891 however, Tesla patented what one day may become his most famous invention. It is the basis for the wireless transmission of electrical power and is know as the Tesla Coil Transformer. It was during this year that Tesla made the following comments during a speech before the American Institute of Electrical Engineers:
"Ere many generations pass, our machinery will be driven by a power obtainable at any point in the universe. This idea is not novel... We find it in the delightful myth of Antheus, who derives power from the earth; we find it among the subtle speculations of one of your splendid mathematicians... Throughout space there is energy. Is this energy static or kinetic.? If static our hopes are in vain; if kinetic - and this we know it is, for certain - then it is a mere question of time when men will succeed in attaching their machinery to the very wheelwork of nature." 
Tesla's Earler Description of the Physical Universe
This description of the physical mechanisms of the universe was given before Tesla became familiar with the Vedic science of the eastern Nations of India, Tibet, and Nepal. This science was first popualized in the United States and the west during the three year visit of Swami Vivekananda.
The Vedas are a collection of writings consisting of hymns, prayers, myths, historical accounting, dissertations on science, and the nature of reality, which date back at least 5, 000 years. The nature of matter, antimatter, and the make up of atomic structure are described in the Vedas. The language of the Vedas is known as Sanskrit. The origin of Sanskrit is not fully understood. Western scholars suggest that it was brought into the Himalayas and thence south into India by the southward migrations of the Aryan culture. Paramahansa Yogananda and other historians however do not subscribe to that theory, pointing out that there is no evidence within India to substantiate such claims. 
Vedic Science and Swami Vivekananda
There are words in Sanskrit that describe concepts totally foreign to the western mind. Single words may require a full paragraph for translation into english. Having studied Sanskrit for a brief period during the late 70's, it finally occurred to this writer that Tesla's use of Vedic terminology could provide a key to understanding his view of electromagnetism and the nature of the universe. But where did Tesla learn Vedic concepts and Sanskrit terminology? A review of the well known biographies by Cheney, Hunt and Draper, and O'Neil , , , reveal no mention of Tesla's knowledge of Sanskrit. O'Neal however includes the following excerpt from an unpublished article called Man's Greatest Achievement:
"There manifests itself in the fully developed being, Man, a desire mysterious, inscrutable and irresistible: to imitate nature, to create, to work himself the wonders he perceives. Long ago he recognized 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 prodigious velocity, becomes gross matter; the force subsiding, the motion ceases and matter disappears, reverting to the primary substance."
According to Leland Anderson the article was written May 13th, 1907. Anderson also suggested that it was through association with Swami Vivekananda that Tesla may have come into contact with Sanskrit terminology and that John Dobson of the San Francisco Sidewalk Astronomers Association had researched that association. 
Swami Vivekananda was born in Calcutta, India in 1863. He was inspired by his teacher, Ramakrishna to serve men as visible manifestations of God. In 1893 Swami Vivekananda began a tour of the west by attending the Parliament of Religions held in Chicago. During the three years that he toured the United States and Europe, Vivekananda met with many of the well known scientists of the time including Lord Kelvin and Nikola Tesla.  According to Swami Nikhilananda:
Nikola Tesla, the great scientist who specialized in the field of electricity, was much impressed to hear from the Swami his explanation of the Samkhya cosmogony and the theory of cycles given by the Hindus. He was particularly struck by the resemblance between the Samkhya theory of matter and energy and that of modern physics. The Swami also met in New York Sir William Thompson, afterwards Lord Kelvin, and Professor Helmholtz, two leading representatives of western science. Sarah Bernhardt, the famous French actress had an interview with the Swami and greatly admired his teachings.
It was at a party given by Sarah Bernhardt that Nikola Tesla probably first met Swami Vivekananda.  Sarah Bernhardt was playing the part of 'Iziel' in a play of the same name. It was a French version about the life of Bhudda. The actress upon seeing Swami Vivekananda in the audience, arranged a meeting which was also attended by Nikola Tesla. In a letter to a friend, dated February 13th, 1896, Swami Vivekananda noted the following:
...Mr. Tesla was charmed to hear about the Vedantic Prana and Akasha and the Kalpas, which according to him are the only theories modern science can entertain.Mr Tesla thinks he can demonstrate that mathematically that force and matter are reducible to potential energy. I am to go see him next week to get this mathematical demonstration.