Perepiteia
Encyclopedia
Perepiteia is claimed to be a new generator developed by the Canadian
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

 inventor Thane Heins. The device is named after the Greek word for peripety
Peripeteia
Peripeteia is a reversal of circumstances, or turning point. The term is primarily used with reference to works of literature. The English form of peripeteia is peripety. Peripety is a sudden reversal dependent on intellect and logic...

, a dramatic reversal of circumstances or turning point in a story. The device was quickly attributed the term "perpetual motion machine" by several media outlets. Due to the long history of hoaxes and failures of perpetual motion machines
History of perpetual motion machines
The history of perpetual motion machines dates back to the Middle Ages. For millennia, it was not clear whether perpetual motion devices were possible or not, but the development of modern theories of thermodynamics has indicated that they are impossible. Despite this, many attempts have been made...

 and the incompatibility of such a device with accepted principles of physics
Second law of thermodynamics
The second law of thermodynamics is an expression of the tendency that over time, differences in temperature, pressure, and chemical potential equilibrate in an isolated physical system. From the state of thermodynamic equilibrium, the law deduced the principle of the increase of entropy and...

, Heins' claims about Perepiteia have been treated with considerable skepticism.

In 2003, Heins filed a patent application
Patent application
A patent application is a request pending at a patent office for the grant of a patent for the invention described and claimed by that application. An application consists of a description of the invention , together with official forms and correspondence relating to the application...

 in Canada but no patent
Patent
A patent is a form of intellectual property. It consists of a set of exclusive rights granted by a sovereign state to an inventor or their assignee for a limited period of time in exchange for the public disclosure of an invention....

 was granted. Heins also founded Potential Difference Inc, the website of which contains a series of videos of the inventor demonstrating the machine.

Heins has recently stated that he is unsure whether or not the machine really produces energy, but in communications with science writer David Bradley of ScienceBase, Heins made claims of up to 7000% efficiency for a bi-toroidal transformer. Heins, who reportedly works 8–12 hours a day on the Perepiteia, insists that it is viable and that "This technology should be mainstream."

Theory

Mechanically, the device appears to be an induction motor
Induction motor
An induction or asynchronous motor is a type of AC motor where power is supplied to the rotor by means of electromagnetic induction. These motors are widely used in industrial drives, particularly polyphase induction motors, because they are robust and have no brushes...

 with a magnetic material placed inside the rotor core. Heins believes that the device's potential may rest in its atypical manipulation of the back electromotive force (back EMF). A more detailed description of the device may be found in the patent application, minus supporting figures.

The apparent unique quality of the Perepiteia machine is that instead of maintaining a certain state of motion, it appears to generate acceleration. According to Heins, the Perepiteia produces magnetic friction which somehow gets turned into a magnetic boost. Using an electric motor, the drive shaft is attached to a steel rotor with small round magnets lining its outer edges. In this set-up of a simple generator, the rotor spins so that the magnets pass by a wire coil just in front of them, generating electrical energy.

Operation

Perepiteia's process begins by overloading the generator to get a current, which typically causes the wire coil to build up a large electromagnetic field. Usually, this kind of electromagnetic field creates an effect called the back electromotive force (back EMF)
Counter-electromotive force
The counter-electromotive force also known as back electromotive force is the voltage, or electromotive force, that pushes against the current which induces it. CEMF is caused by a changing electromagnetic field. It is the effect of Lenz's Law of electromagnetism...

 due to Lenz's law
Lenz's law
Lenz's law is a common way of understanding how electromagnetic circuits must always obey Newton's third law and The Law of Conservation of Energy...

. The effect should repel the spinning magnets on the rotor, and slow them down until the motor stops completely, in accordance with the law of conservation. However, instead of stopping, the rotor accelerates - i.e. the magnetic friction did not repel the magnets and wire coil. Heins states that the steel rotor and driveshaft had conducted the magnetic resistance away from the coil and back into the electric motor. In effect, the back EMF was boosting the magnetic fields used by the motor to generate electrical energy and cause acceleration. The faster the motor accelerated, the stronger the electromagnetic field it would create on the wire coil, which in turn would make the motor go even faster. Heins seemed to have created a positive feedback loop. To confirm the theory, Heins replaced part of the driveshaft with plastic pipe that wouldn't conduct the magnetic field. There was no acceleration.

Scientific examination

In early 2008, Heins was given access to equipment to demonstrate it by professor Riadh Habash of the University of Ottawa
University of Ottawa
The University of Ottawa is a bilingual, research-intensive, non-denominational, international university in Ottawa, Ontario. It is one of the oldest universities in Canada. It was originally established as the College of Bytown in 1848 by the Missionary Oblates of Mary Immaculate...

, who says of it, "It accelerates, but when it comes to an explanation, there is no backing theory for it. That's why we're consulting MIT. But at this time we can't support any claim."

After examining the machine and witnessing a demonstration, Massachusetts Institute of Technology
Massachusetts Institute of Technology
The Massachusetts Institute of Technology is a private research university located in Cambridge, Massachusetts. MIT has five schools and one college, containing a total of 32 academic departments, with a strong emphasis on scientific and technological education and research.Founded in 1861 in...

 (MIT) professor Markus Zahn admitted that he could not fully explain its operation. Although he refused to call it perpetual motion
Perpetual motion
Perpetual motion describes hypothetical machines that operate or produce useful work indefinitely and, more generally, hypothetical machines that produce more work or energy than they consume, whether they might operate indefinitely or not....

, he stated that it might be an extremely efficient motor. Regarding the device, Zahn stated that "It's an unusual phenomena I wouldn't have predicted in advance. But I saw it. It's real. Now I'm just trying to figure it out...To my mind this is unexpected and new, and it's worth exploring all the possible advantages once you're convinced it's a real effect." However, even if Perepiteia does not produce perpetual motion
Perpetual motion
Perpetual motion describes hypothetical machines that operate or produce useful work indefinitely and, more generally, hypothetical machines that produce more work or energy than they consume, whether they might operate indefinitely or not....

, Zahn still believes that the device could have considerable practical applications, noting that "There are an infinite number of induction machines in people's homes and everywhere around the world. If you could make them more efficient, cumulatively, it could make a big difference."

Criticism

Critics of the system have pointed out that the system described by Heins simply demonstrates a change in the motor's hysteresis drag
Rolling resistance
Rolling resistance, sometimes called rolling friction or rolling drag, is the resistance that occurs when a round object such as a ball or tire rolls on a flat surface, in steady velocity straight line motion. It is caused mainly by the deformation of the object, the deformation of the surface, or...

, increasing the speed of the rotor but not producing any energy. In other words, when the rotor exhibits acceleration following a specific electrical short-out
Short circuit
A short circuit in an electrical circuit that allows a current to travel along an unintended path, often where essentially no electrical impedance is encountered....

, the device is merely more efficiently converting the input electricity to mechanical energy
Mechanical energy
In physics, mechanical energy is the sum of potential energy and kinetic energy present in the components of a mechanical system. It is the energy associated with the motion and position of an object. The law of conservation of energy states that in an isolated system that is only subject to...

 than in the other test configurations.

On February 29, 2008, six members of Ottawa Skeptics, all of whom possess qualifications in engineering and technology, met at the Colonel By building at the University of Ottawa
University of Ottawa
The University of Ottawa is a bilingual, research-intensive, non-denominational, international university in Ottawa, Ontario. It is one of the oldest universities in Canada. It was originally established as the College of Bytown in 1848 by the Missionary Oblates of Mary Immaculate...

 to witness a demonstration of Perepiteia. Heins, who conducted the demonstration, later met with the members to discuss his device and answer questions. In a subsequent report released in May, Ottawa Skeptics expressed severe doubts about Heins' claims regarding Perepiteia. They noted that Perepiteia produces either observed acceleration or a slight increase in generator electrical output but that this alone does not automatically mean that "free energy" or perpetual motion is being produced or that there is a "real and measurable effect." While acknowledging that the speed-up behaviour of the generator cannot be fully explained, they stated that there is no evidence that Perepiteia "represents any challenge to currently known laws of physics."

On May 21, 2009, a skeptic writing under the name Natan Weissman wrote an explanation of Perepiteia in relation to its motor, a Ryobi
Ryobi
Ryobi Limited is a manufacturer of components for the automobile, electronics, and telecommunications industries. They also create printing equipment, power tools and builders' hardware....

 bench grinder. The author states that the acceleration behavior of the machine is due to the consumption of torque
Torque
Torque, moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....

 from the induction motor
Induction motor
An induction or asynchronous motor is a type of AC motor where power is supplied to the rotor by means of electromagnetic induction. These motors are widely used in industrial drives, particularly polyphase induction motors, because they are robust and have no brushes...

, rather than any unconventional manipulation of Electromagnetic fields
Electromagnetic field
An electromagnetic field is a physical field produced by moving electrically charged objects. It affects the behavior of charged objects in the vicinity of the field. The electromagnetic field extends indefinitely throughout space and describes the electromagnetic interaction...

.

External links

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