﻿ Water in Electric Field: Perpetual Motion
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Water in Electric Field: Perpetual Motion
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Pentcho Valev
2017-11-20 08:40:22 UTC
The standard interpretation of dielectrics in capacitors:

"Dielectrics in capacitors"

When the dielectric is liquid, e.g. water, additional effects are observed:

1. If the capacitor is only partially immersed, water rises:

"A plane capacitor with rectangular plates is fixed in a vertical position. [...] The capacitor is charged and disconnected from the battery. [...] The lower part of the capacitor is now brought into contact with a dielectric liquid:

When the plates contact the liquid's surface, a force in the upward direction is exerted on the dielectric liquid. The total charge on each plate remains constant..." [END OF QUOTATION] http://electron6.phys.utk.edu/PhysicsProblems/E&M/2-Dielectrics/capacitors_with_dielectrics.html

2. PERPETUAL (limited only by the deterioration of the system, e.g. slow discharge of the capacitor) FLOWS are seen between the plates:

"Liquid Dielectric Capacitor"

In an electric field, water develops a specific local pressure that pushes in all directions and results in perpetual (limited only by the deterioration of the system) flows in the bulk of the liquid. This pressure is NON-CONSERVATIVE. This means that, if suitably harnessed, the pressure will do work AT THE EXPENSE OF AMBIENT HEAT (in violation of the second law of thermodynamics). Here is the molecular mechanism:

If it were not for the indicated (with an arrow) dipole, other dipoles in the picture are perfectly polarized as if there were no thermal motion. Of course, this is an oversimplification – thermal motion is a factor which constantly disturbs the polarization order. The crucial point is that, as can be inferred from the picture, any thermal disturbance contributes to the creation of a local pressure. Consider the indicated dipole. It has just received a strong thermal stroke and undergone rotation. As a result, it pushes adjacent dipoles electrostatically. One can say, somewhat figuratively, that the indicated dipole has absorbed heat and now, by pushing adjacent dipoles, is trying to convert it into work.

The sum of all such disturbances is macroscopically expressed as multiple flows within the liquid and an overall pressure that counteracts the original electrostatic attraction between the plates:

"However, in experiments in which a capacitor is submerged in a dielectric liquid the force per unit area exerted by one plate on another is observed to decrease... [...] This apparent paradox can be explained by taking into account the DIFFERENCE IN LIQUID PRESSURE in the field filled space between the plates and the field free region outside the capacitor." http://farside.ph.utexas.edu/teaching/jk1/lectures/node46.html

Wolfgang K. H. Panofsky, Melba Phillips, Classical Electricity and Magnetism, pp.115-116: "Thus the decrease in force that is experienced between two charges when they are immersed in a dielectric liquid can be understood only by considering the effect of the PRESSURE OF THE LIQUID ON THE CHARGES themselves." http://www.amazon.com/Classical-Electricity-Magnetism-Second-Physics/dp/0486439240?tag=viglink21401-20

Tai Chow, Introduction to Electromagnetic Theory: A Modern Perspective, p. 267: "The strictly electric forces between charges on the conductors are not influenced by the presence of the dielectric medium. The medium is polarized, however, and the interaction of the electric field with the polarized medium results in an INCREASED FLUID PRESSURE ON THE CONDUCTORS that reduces the net forces acting on them." http://www.amazon.com/Introduction-To-Electromagnetic-Theory-Perspective/dp/0763738271

Here is an even more spectacular illustration of perpetual (limited only by the deterioration of the system) motion of water in an electric field:

"The Formation of the Floating Water Bridge including electric breakdowns"

The system is obviously able to produce work - e.g. by rotating a waterwheel - and this work will be done at the expense of ambient heat, in violation of the second law of thermodynamics.

Pentcho Valev
Pentcho Valev
2017-11-20 19:16:42 UTC
In an electric field water (or any other dielectric liquid) can cyclically rise and do work, e.g. by lifting floating weights:

"Liquid Dielectric Capacitor"x http://youtu.be/T6KAH1JpdPg

"Chapter 11.6.2 (demo only): Force on a Liquid Dielectric"

The crucial question is:

The work (lifting floating weights) will be done at the expense of what energy?

The only reasonable answer is "ambient heat" - no other source of energy is conceivable. The system is a heat engine violating the second law of thermodynamics!

Pentcho Valev
Pentcho Valev
2017-11-21 22:03:25 UTC
Water in an electric field again:

"A deviation from the second law of thermodynamics has been demonstrated experimentally for the first time. [...] To test the idea, the researchers put about 100 latex beads - each 6.3 µm across - into a WATER-FILLED CELL, which was placed on the stage of a microscope. The researchers focused a laser onto one of the beads, which induced a dipole moment in the bead and drew it towards the most intense region of the ELECTRIC FIELD in the laser beam." http://physicsworld.com/cws/article/news/2002/jul/16/small-systems-defy-second-law

Nature: "Second law broken. Researchers have shown for the first time that, on the level of thousands of atoms and molecules, fleeting energy increases violate the second law of thermodynamics. [...] They found that over periods of time less than two seconds, variations in the random thermal motion of water molecules occasionally gave individual beads a kick. This increased the beads' kinetic energy by a small but significant amount, in apparent violation of the second law." http://www.nature.com/news/2002/020722/full/news020722-2.html

Scientific American: "Second Law of Thermodynamics Violated. [...] ...the water molecules interacted with the bead in such a way that energy was transferred from the liquid to the bead. These additional kicks used the random thermal motion of the water to do the work of moving the bead, in effect yielding something for nothing. For periods of movement lasting less than two seconds, the bead was almost as likely to gain energy from the water as it was to add energy to the reservoir, the investigators say." https://www.scientificamerican.com/article/second-law-of-thermodynam/

Pentcho Valev
Pentcho Valev
2017-11-23 06:43:47 UTC