Albert Einstein had said, in 1951, “This word ether has changed its meaning many times in the development of science.” A fundamental dividing line is between the “static ether” and the “dynamic ether.” For 19th-century physicists, The Ether was omnipresent, at absolute rest in absolute space. But ever since around 1913 and the introduction of the “torsion field” idea, The Ether began to be conceived as the actual transformation medium between the higher spatial realities and our (3-D) dimension. 
The Michelson-Morley experiment seemingly disproved the existence of the static ether. However there are weaknesses in that conclusion, as explained in Our Friend, The Ether (Part 6), the Ersjdamoo’s Blog entry of October 19, 2013.
As for the dynamic ether, authors Richard C. Hoagland and Mike Bara point out that the equations of James Clerk Maxwell had been “dumbed down.”  In fact the Scottish mathematical physicist Maxwell, although not a believer in the static ether, did believe in a hyperspatial ether, and this is another reason why the Michelson-Morley experiment is inconclusive. “Which ‘ether’ are we talking about?” (to paraphrase Albert Einstein). Even if we grant that Michelson-Morley disproved the static ether, it did not disprove the dynamic ether. 
The dynamic ether is said to manifest via the torsion field. The “torsion field” is a “spin field”, a whirling vortex. (Background: Our Friend, The Ether (Part 23), Ersjdamoo’s Blog entry of November 20, 2013.)
Viktor Schauberger, an Austrian forester and naturalist, had one day observed a trout in a clear, fast moving stream. The trout was stationary in the swift current, using a minimum of effort to remain in place: a flick of a fin here, a small movement of the tail there. As he pondered this well-known, but little understood fact, he came to the realization that the trout was using far less energy to remain motionless than conventional physics would allow. After all, the fish should have been swimming like crazy just to stand still. 
Applying himself to understand the trout phenomena, Schauberger eventually detected a spiraling motion toward the center of a vortex, a form of motion he called “implosion.” Schauberger speculated that, by deliberately compressing matter via a spiral vorticular motion, matter might reach such a state that particles in atoms become “unglued” and transform into a new form of energy. 
Schauberger, not a Nazi, was nonetheless sucked into the secret science of Adolph Hitler’s Germany. Days after the end of World War II, US intelligence agents found Schauberger and took him into custody. They did not especially care whether or not Schauberger was a Nazi. What the US intelligence agents were after was the secret science. 
Viktor Schauberger viewed nature as a complex interaction of forces that constantly created or reinvigorated matter. Schauberger noticed vortices, “energy spirals”, “creative whirlpools of Nature”, occurring naturally throughout the universe. Schauberger and his work was seized by the Americans. His research became classified, under the heading, “atomic energy research.” 
In 1943, in Philadelphia, a secret experiment is rumored to have occurred. The (static) Ether is associated with electro-magnetism. The Ether is also associated with the force of gravity. These etheric forces, electro-magnetism and gravity, are said to have been key to the “Philadelphia Experiment.” One test is said to have resulted in a ship, the USS Eldridge (image above), being rendered almost completely invisible, with some witnesses reporting a “greenish fog” appearing in its place. When the ship reappeared, some sailors were embedded in the metal structures of the ship! The experiment was repeated on October 28, 1943. This time, the USS Eldridge not only became invisible, but she physically vanished from the area in a flash of blue light and teleported to Norfolk, Virginia, over 200 miles away! 
Branching off from the rumored Philadelphia Experiment was reportedly something called the Montauk Project, a series of secret United States government projects conducted at Camp Hero or Montauk Air Force Station on Montauk, Long Island for the purpose of developing psychological warfare techniques and exotic research including time travel. 
Jacques F. Vallee, although considering “Philadelphia Experiment” and “Montauk Project” to be elaborate hoaxes, nonetheless provides a good summary of the rumors:
The Montauk project has been called one of America’s greatest modern mysteries. The story began with the pioneering work of Wilhelm Reich and Nikola Tesla, took form in government-sponsored weather control experiments in the early 1940s, and crystallized in the ill-fated Philadelphia Experiment on invisibility during World War Two. The Philadelphia Experiment was closed, but long-term research continued. The Montauk project, running through the seventies and early eighties at New York’s Montauk Air Force Base, was an attempt to explore, chart and ultimately manipulate the flow of time. 
As Vallee describes it, a Preston Nichols is said to have suffered false memory syndrome but later regained the blanked memories of his role as chief technician for the Montauk Project after years of struggle. Preston Nichols, says Vallee, is the “key witness.” Nichols has written several books on the alleged Montauk Project, including The Montauk Project: Experiments in Time. A book description gives the gist: “Starting with the ‘Philadelphia Experiment’ of 1943, invisibility experiments were conducted aboard the USS Eldridge that resulted in full scale teleportation of the ship and crew. Forty years of massive research ensued, culminating in bizarre experiments at Montauk Point that actually tapped the powers of creation and manipulated time itself.”
In summary, we have a split between German physics and other physics beginning around 1913 and accelerating during the time of the Third Reich. During World War II, secret scientific research was conducted by the governments of the warring parties. In the United States, this “secret science” was conducted underneath the umbrella of the Manhattan Project. Not all of the Manhattan Project’s secrets were later revealed, and it morphed circa 1945 into Majestic-12. Sheltered beneath Majestic-12 was “strange science” of both Nazi Germany and the United States. And somewhere still in all the classified documents are unrevealed truths about The Ether.
——- Sources ——-
 Dark Mission: The Secret History of NASA, by Richard C. Hoagland and Mike Bara. Los Angeles: Feral House, 2007
 Reich of the Black Sun: Nazi Secret Weapons & the Cold War Allied Legend, by Joseph P. Farrell. Adventures Unlimited Press, 2005
 Tales of the Holy Lance, by Brian Redman. (Published by Lulu.com)
 “Anatomy of a Hoax: The Philadelphia Experiment Fifty Years Later”, by Jacques F. Vallee. Journal of Scientific Exploration, Vol. 8, No. 1, pp. 47 -71. (1994).