Text-only transcript of the video New Ice Age Near 58 part evidence - 3 by Rolf Witzsche 

New Ice Age Near 58 part evidence - 3


(01 Critical evidence of a changing world )



Part 3 - Critical evidence of a changing world

Part 3 deals with the supporting evidence of the impending solar cut-off point. The evidence represents some rarely understood principles that render our sun a variable star.

Electromagnetic processes are variable processes. The intensity of the expression of the operating principles varies with the energy density in the driving processes. Let's quickly review the relevant principles that enable a Sun to be a variable star.


(02 Dense plasma sphere surrounding the Sun )



The Sun can be seen as existing within a large electromagnetic structure that concentrates interstellar plasma streams and focuses them onto the Sun.

The results is a dense plasma sphere surrounding the Sun. 


(03 Primer Fields static experiments )



As I said before, the dynamics of the electromagnetic structure have been explored in detail by the researcher David LaPoint, who has termed the structure, the Primer Fields. He explored the basic structure with static experiments.


(04 High-energy electric flow experiments )



He used the static experiments to explore the details of the electromagnetic geometry that have previously been known and theorized from known principles, and have been seen evident in space, and were recognized also as a natural, universal, plasma-flow geometry as it has been observed in high-energy electric flow experiments, shown in the example on the right, produced at the Los Alamos National Laboratory presented by Anthony Paratt, the director of the experiments.


(05 Revealed the existence of a magnetic confinement dome )



The static experiments have revealed the existence of a magnetic confinement dome and magnetic ring structures that facilitate the concentration of plasma.


(06 Magnetic retention strength )



It has been verified that by these natural features plasma becomes focused onto a sun.

David LaPoint also discovered that when the confined density exceeds the magnetic retention strength of the confinement dome, some of the excess escapes through the weakest point of the dome. By this feature that limits the plasma pressure that is focused onto the Sun, the Sun remains relatively steady.


(07 Excess plasma becomes solar wind )



Excess plasma pressure becomes thereby simply vented back into space, typically in the form of solar wind.


(08 venting' feature )



This 'venting' feature too, has been replicated in laboratory experiments.


(09 Concentrated in the fusion reaction cells )



#47

The regulating principle applies especially to the processes on the surface of the Sun, where the highest concentration of plasma exists, which is forged from the concentrated plasma that surrounds the Sun, that becomes further concentrated in the fusion reaction cells to a density that enables nuclear fusion to occur.


(10 Electrically powered fusion generates some thermal heating )



The resulting electrically powered fusion generates some thermal heating in the process, which heats the surface of the Sun to 5,505 degrees Celsius. When the input plasma has too high a density, which it currently still has, the excess plasma is ejected through the confinement dome.


(11 For as long as the solar winds flow )



#48

The ejected plasma from the confinement dome, flows away explosively from the surface of the Sun and becomes the solar wind. When the plasma's input density is extremely high, a strong solar wind results. Inversely, when the input density diminishes, the solar wind diminishes to a lesser wind-pressure. This means that for as long as the solar winds flow, we have enough plasma pressure focused onto the Sun to maintain the fusion process and with it the heating of the Sun.


(12 The occurrence of sunspots is proof )



#49

Inversely, when the plasma flow is inhibited in the reaction cells on the surface of the Sun, such as by built-up localized back pressure, the electromagnetic processes that enable the reaction cells to function, breaks down. When this happens, the cells become inactive, either individual or in groups, even in large groups. The result gives us the sunspots. Sunspots occur when we have strong activity occurring that results in greater backpressure than the escape mechanism can handle. This means that the occurrence of sunspots is proof that we live under an electric Sun.

The occurrence of the sunspots also tells us that we have a strongly operating, 'healthy' Sun.

When the sunspots no longer occur, then we know that the plasma pressure onto the Sun has diminished below what is needed for optimal operation. That's cause to worry.


(13 The measure of the solar-wind pressure )



#50

The most immediate measurement that we have for judging the health of the solar system, however, is not the existence of sunspots alone, but is the measure of the solar-wind pressure. When we see a trend of diminishing solar-wind pressure, extended over time, we have cause to become greatly concerned. This, unfortunately is the current state in the solar system.


(14 NASA's Ulysses measured a 30% reduction )



#51

The solar wind pressure has been diminishing for some time. NASA's Ulysses satellite has seen a brief window of this trend when it measured a 30% reduction of the solar-wind pressure in the space of ten years. This is a huge reduction. If this trend is projected forward in a linear manner, the solar wind will cease completely in the 2030s timeframe. Past the point of zero solar wind, any reduced plasma input pressure must result in a weaker Sun, or the Sun going inactive from a point on. We are not at this point yet. But we may get to this point soon.

In forecasting the future, we need to consider that the self-regulating system that keeps the Sun at a constant output level at the present time, can only maintain itself when excess input pressure exists. Once this is gone, anything can happen. The only unknown factor here, which no one can foretell, is, to what low level the solar output can diminish before the Primer Fields shut down that enable the entire solar process to function.


(15 Magnetic measurements )



Fortunately other measurements are also possible that give us additional measurements as to where we stand. These are magnetic measurements.

It is physically possible to measure fairly accurately the 'health' of the 'primary' Primer fields that focus interstellar plasma onto the Sun.

The Primer Fields are essentially magnetic fields that are created by the self-concentrating principle of plasma flow, which generates bowl-type magnetic field structures near a focal point. These large magnetic fields that focus plasma around the Sun, interact with the Earth's magnetic field. The resulting interaction can be measured.


(16 The dynamo effect of the spinning Earth )



#52

The Earth's magnetic field is generated by the dynamo effect of the spinning Earth. Since the Earth has become pervaded with plasma particles that carry an electric charge, the spinning of the electric plasma creates a magnetic field perpendicular to the rotation, so that the resulting magnetic field becomes aligned with the planet's spin axis, regardless of how the spin axis is oriented. That's the dynamo-field effect. Since the Earth's spin axis is inclined 23.5 degrees off the ecliptic plane, the dynamo-magnetic-field is likewise so inclined.


(17 Magnetic effect from the Primer Fields )



But when the magnetic effect from the Primer Fields is interacting with the dynamo field, the resulting magnetic pole becomes deflected away from the geographic pole, towards the Primer Fields' magnetic orientation. The magnetic effect of the Primer Fields is oriented perpendicular to the ecliptic.


(18 When the Primer Fields are strongly dominant )



#53

All this means that when the Primer Fields are strongly dominant, the Earth's magnetic north pole becomes deflected away from the dynamo north pole, which is the geographic pole, towards the 70 degree latitude, in accord with the 23 degree inclination of the spin axis. This extreme condition existed in 1831, according to on-the-ground measurements conducted by an expedition in northern Canada. The marked location was the location where the effective magnetic field lines stood perpendicular to the horizon at the ground level where the measurements were made. Since the 1831 measurement was made, the electric environment in the solar system has become increasingly weaker.


(19 Zero degrees deflection would mean )



By the time NASA's Ulysses spacecraft began its measurements of the solar-wind pressure in 1992, the Primer Fields had already diminished so extensively that the deflection of the magnetic pole had already diminished so dramatically that barely more than half of the 1831 deflection had remained. By the time the Ulysses satellite was turned off, the magnetic deflection had been reduced to a mere 5 degrees. By 2014 it stood at only 4 degrees. Zero degrees deflection would mean that the Primer Fields have diminished to zero, meaning that they would have ceased to exist. The magnetic measurements indicate that we are not far from this point.


(20 A shift of the boundary zone )



Of course, what we have measured is the combined effect of a number of principles interacting. The 'measured' magnetic weakening of the Primer Fields evidently also includes the effect of a shift of the boundary zone between the opposite magnetic fields of the in-flowing and out-flowing Primer Fields. The boundary would shift somewhat in a dynamically weakening system. This means that the shifting of the magnetic pole cannot be regarded as an absolute measurement. What is measured represents more likely a magnified effect. Nevertheless, the measured effect indicates that a tremendous weakening is in progress that has not been seen on Earth since such measurements were made.


(21 Diminishing magnetic-pole deflection )



The diminishing magnetic-pole deflection is now even visible from space. The location of the southern aurora confirms, that what has been measured in the North with magnetometers on the ground, is visibly evident from space. The southern aurora, as it is seen here from space, is barely 5 degrees offset from the geographic South pole. The reduced deflection is not insignificant if one considers that the overall magnetic field strength of the Earth itself, has diminished to possibly the lowest level since measurements were recorded. The total field-intensity of the Earth is evidently affected by the intensity of the all-pervading Primer Fields that may be far-more important for the Earth than we may know, which we are just beginning to discover.


(22 Maintaining the spin-rate of the planets )



For example, it appears that the Primer Fields are critical for maintaining the spin-rate of the planets. If the spin-rate was not actively assisted, the planets would have stopped spinning long ago. It is interesting to note that the two innermost planets have almost no axial spin, which may be due to their being so close to the Sun that the swirling of the Sun's magnetic field overpowers the steady effect of the Primer Fields. While the Earth makes one rotation around its axis in 24 hours, it takes Venus 243 days for a single rotation, and less than 10 hours for Jupiter to accomplish the same. There is a pattern evident here, for which the cause remains yet to be discovered fully. When we get there, we will likely realize that many of our modern exotic theories such as curved space, time dilation, tunnelling effects, even aspects of quantum theory and relativity, and such exotic off-shoots as neutron stars, black holes, stellar explosions, and the Big Bang, may be nothing more than glorified epicycles of the type that Ptolemy has pioneered to proof a reality that doesn't exist.


(23 Ptolemy had bent to the doctrine )



Ptolemy had bent to the doctrine that all heavenly bodies must follow the path of perfect circles, and that the Earth is the center of the Universe. This doctrine had ruled for more than a thousand years, and so did the epicycles theory that Ptolemy had invented in defending the doctrine. In today's age the ruling doctrine is, that mass and gravity are the only causative factors in the universe, so that all effects must be seen as rooted in their interaction. In the absence of the recognition of the electric nature of the universe and its vastly greater forces, extremely exotic epicycles have been invented to fill the gap, and to prove a 'reality' that doesn't actually exist, while ignoring an entire aspect of reality that actually does exist. 


(24 Hannes Alfven model of the electric universe )



Some of this may be intentional. When Hannes Alfven developed his model of the electric universe in the mid 1900s, the Big Bang theory was developed as a counter pole. While the difference was academic then, as it didn't have immense worldwide consequences, those consequences are coming to light now and demand that the paradox that results from such differences, be resolved.


(25 How soon the Sun will go inactive )



The determination as to how soon the Primer Fields will diminish to the point that the solar winds stop completely, and how soon the Sun will go inactive afterwards, is critical for the whole of humanity, though it cannot be forecast to the day and year. More factors than we may know, may determine this outcome. We can only recognize the principles that are glaringly evident, and the changing effects they cause that we have measured. This is all that we have available to respond to. But do we really need to know the precise day when the solar winds will stop, and how many days thereafter the Sun will go inactive? It is not the task of scientific forecasting to make such predictions. The task of science is fulfilled when it brings the principles to the foreground that can enable us to recognize with a great degree of certainty, on the basis of these measurements that we have already made, what type of future we are heading into, and what preparations must be made for humanity to live and prosper, and develop further, in that future.


(26 Absence of tell-tale boundary conditions )



#54

That the Primer Fields as a dynamic system are highly sensitive to the prevailing electric conditions is evident on the Sun by the complete absence of any tell-tale boundary conditions that would indicate with certainty where the next sunspot will erupt. Until the very moment when a reaction cell 'blows out' and becomes a dark spot on the Sun, everything looks perfectly normal on the surface. We only know that under present conditions the sunspots will happen on the Sun somewhere. We also know from observing the sunspots, that once a sunspot has erupted, it takes a long time for it to heal, especially when the eruption extends over a wide area. Forecasting the start of the next Ice Age is not much different. the current projections indicate that we may have still 30 years left to prepare ourselves. But those are just projections.


(27 Vulnerable to a sudden collapse without warning )



The primary Primer Fields may be equally as vulnerable to a sudden collapse without warning, as the fusion-reaction cells are, on the surface of the Sun.

And when the primary Primer Fields collapse and render the Sun inactive, they may likely take a long time too, to heal. Ice core measurements indicate that this healing may take 1470 years, as it did throughout the last Ice Age, according to the measured Dansgaard Oeschger oscillations.


(28 A reactive response is not sufficient )



All this tells us that a reactive response to the unfolding event of the coming Ice Age transition is not sufficient as a measure for protecting humanity. The response has to begin now while we still have time to implement the protective measures based on understood principles and all the knowledge we have gained so far about them.

In this manner, by reacting before the crisis begins, we give ourselves a chance to survive and have a future. If we fail to act upon what we know, the principles we know tell us with a high degree of certainty, that we won't have a future at all.


(29 Experience a 70% loss of solar energy )



#55

When the Primer Fields collapse, the solar radiation will diminish rapidly to the low temperature that we presently measure in the umbra of sunspots, which appears to be in the range of 3,000 to 4,000 degrees Kelvin. This means we will experience a 70% loss of radiated solar energy the moment the Sun goes inactive. If we prepare ourselves in advance, we will live on in spite of the consequences. While the consequences will be harsh above the 40 degree latitudes, we can live with those consequences on the Earth quite easily if we have the requisite infrastructures in place. Unfortunately, the building of the type of infrastructures that are required, is not even envisioned today, much less set in motion.


(30 Highly-efficient self-regulating features )



The reason why the Sun remains at a constant energy level, even through its 11-year solar cycles, is that the Sun's Primer Fields system incorporates highly-efficient self-regulating features that keep the system operating efficiently under any circumstances, until the threshold is reached, beyond which the active fields collapse and nothing works anymore. We won't likely see a gradual change towards Ice Age conditions. We can only observe the insignificant-seeming fringe effects that we have observed, and react as if this is all the warning we get, which may be the case.


(31 Diminishing that Ulysses has reported )



#56

This means that we need to look intensively at the fringe events that we know, like the diminishing solar-wind pressure that Ulysses has reported, in order to acknowledge the solar system as an electric system with a weakening electric environment, and that we do this long before the big threshold event occurs. The fringe-event measurements that were made by the Ulysses spacecraft, suggest that we may have still 30 years left to prepare our world before the greatest climate change in the history of humanity, begins. But will we do it? We see the huge diminishing of the solar-wind pressure, by 30% in a decade, and the reduced magnetic field of the Sun by the same 30% over the same time span. We also see the dramatic increase in Galactic Cosmic Ray flux by 20% as the result of the weakening.


(32 Resulting from the increased cosmic-ray-flux )



We see increased cloudiness resulting from the increased cosmic-ray-flux, which results in the cooling of the Earth as more solar energy is reflected back into space. We see greater temperature fluctuations now happening as the increased cloud forming reduces the water vapor, and with it the moderating greenhouse effect that is caused mostly by water vapor. We see increasing drought and flooding happening as the water-retention in the clouds is being reduced by the combined effect of the dynamic weakening on these numerous fronts. Surprisingly, society keeps its eyes and minds closed to the already visible fringe effects that are but precursors in a trend that promises to become increasingly more severe of the next 30 years, with immense consequences for agriculture.


(33 We may not even have 30 years left )



The magnetic measurements suggest that we may not even have 30 years left. But does anyone raise an eyebrow in the face of this ever-growing evidence? No! Instead, the world grinds on.


(34 Electric weakening far-reaching reflections )



#57

The electric weakening that presently affects the solar system, has far-reaching reflections throughout the entire solar system. Some of these, we are just beginning to discover. One of the items of evidence that is coming to light is the weakening of the big red spot on Jupiter that has stood unchanged since it was discovered, which suddenly has become noticeably smaller over the last twenty years in which the major electric weakening of the solar system has accelerated. Do we have three more decades of time left? No one can answer this.


(35 Might give us potentially 30 years )



Fortunately, we do have those known items of tell-tale evidence that a significant weakening is in progress, which, according to the principles involved, might give us a space of potentially 30 years, and maybe less, to prepare our world for living with an inactive Sun.

The proper response would be, to begin the work towards protecting our existence. The transition to an inactive Sun will likely occur rapidly, potentially within a day, or a few weeks, or a months at the most. The fast transition rules out reactive responses. The Sun may appear as a dark yellow star one morning that at first will glow with residual energy for some time. It will likely be larger in size, then, while the Sun's plasma sphere expands in the absence of external plasma pressure. It may also glow with some remaining plasma interaction.


(36 White Dwarf examples )



 In time, however, the inactive Sun will likely cool down and become a White Dwarf that shines from a small point in the center with the energy of nuclear decay. A White Dwarf star, is a star that is powered exclusively by the nuclear-fission decay of atoms that are drawn to its core and are crushed there by the Sun's gravity.

Evidence for both stages appears to have been located by NASA's Hubble Space Telescope in many places, like in the more-densely populated star clusters shown here where such evidence would be more likely detected. It is believed that up to 40,000 stars in the M4 cluster have gone dark. In the picture shown here, the White Dwarf examples are encircled. Also examples of the dark red or yellow-stage for stars are apparent. What we see here seems to tell us that 40,000 solar systems have already gone inactive in the cluster shown here.

In the empty box of the entropic universe, a White Dwarf  is deemed to be a stellar remnant that is composed mostly of electron-degenerate matter from a depleted star that has used up its fusible fuel. Since the theoretical construct of electron-depleted matter cannot exist, as electric repulsion would force the remnant apart and become infinitely diffused, the White Dwarfs are not what they are deemed to be. Since all stars are spheres of plasma, as they cannot exist as anything else, they cannot degenerate, burn out, or collapse. 


(37 A White Dwarf is a star that became inactive )



Consequently, a White Dwarf is a star that became inactive. In considering that the Milky Way galaxy has been in an extremely weakened state for the last 2 million years, it is not surprising that one finds a great many inactive stars in the galaxy. Most likely, all the inactive stars that we see today as white dwarves will become active again in due course, over time.


(38 The Sun had recovered for brief periods )



Ice core records from the last Ice Age tell us that the Sun had recovered for brief periods in beats of 1470 years, all the way through the glaciation period. The recovery would have repeatedly recharged the Sun's residual stores of energy and of atoms for its fission process while being inactive. Therefore, for most of the glaciation periods, our Sun would have joined the rank of the inactive stars.


(39 Dust accumulations in glacial deposits )



#58

We do have ample evidence locked in ice on Antarctica, that the primary Primer Fields are real and have a larger effect on the solar system than people care to acknowledge. The dust in ice also tells us that the primary Primer Fields did not exist during the glaciation periods, and that as a consequence the Sun was essentially inactive during the glaciation periods.

The evidence exists in the form of dust accumulations in glacial deposits, near the end of every glaciation period that we have records for. The dust accumulation that we see is precisely what one would expect in times when the Sun has been inactive for long periods. In such a case, the electromagnetic assistance of the orbits of the planets would not have existed for long periods, which an active Primer Fields system brings to bear on the planets to stabilize their orbits.

The result of the loss of this effect would be that the orbits decay over time, especially that of the lighter asteroids in the asteroid belts. When the active maintenance for the orbits is missing for tens of thousands of years, extensive asteroid intrusions would become normal on Earth, and would increase until the start of the next interglacial period, when the primary Primer Fields become active again. At this point the Sun becomes active again, and everything with it, and the orbits in the solar system become readjusted to normal again. 

Thus, the ice on Antarctica tells us that the Primer Fields system is real and is powerfully effective when it is active, and that the ice ages are consequences of the Primer Fields being inactive.


(40 Dust in ice, and White Dwarf stars )



In the larger context, the evidence of dust in ice, and the existence of orange, red, and brown stars, even White Dwarf stars, all tell us the same story, each in its own dimension. And the story concludes - like the story of the solar wind and of the magnetic pole shift - that we must rouse ourselves to build the required infrastructures with which to protect our existence. This is the core reality that we cannot escape. We cannot run away from this battle and hope to live. We must win this battle. We are in a war, and the enemy is ourselves. The enemy is our small-minded thinking. It is called indifference, doubt, disinterest, inhumanity, a lack of love for one another, and so on. And this war must be won by all. The Ice Age challenge is not a physical challenge. The physical resources exist to meet the requirements for the impending climate transformation. But will we do it? The answer becomes a challenge rooted in the mind and involves the entire social, political, and economic scene.


(41 The entire world is affected )



When the Sun goes inactive, the entire world is affected, and is is extremely affected. The zone in which agriculture remains viable will shrink to a narrow band across the equator. Since little land exists there, most of the world's agriculture will have to be relocated onto floating platforms located across the equatorial seas, complete with floating cities, floating industries, and floating bridges to connect everything. As many as 6000 new cities will have to be built to enable the relocation of entire nations out of the by then uninhabitable zones, when the Sun goes inactive. While these necessary infrastructures can all be built, for which the material and energy resources exist in abundance, nothing is presently being build, or even considered. On this track we are presently loosing the war and are committing our children to death. 

This failure is evident on the entire front, even in science. What is termed science, has been buried with perversion - buried under politically motivated doctrines, such as the manmade global warming doctrine where the truth, the discovery of principles, and raising the welfare of humanity, is no longer the objective of science. Science itself has been trashed to its very core by political perversions of it. And so, without a clear understanding of the actual principles that are expressed in the Ice Age dynamics, society will continue dreaming that it has a vastly longer period to prepare for the coming Ice Age transition, and that the severity will be negligible, instead of being extremely severe and being tangibly near. The point is that we don't have much time left to waste, considering the scope of the work that needs to be done.

Ultimately the universe won't be cheated by us, no matter what we may choose for our future. If we choose to remain indifferent and get wiped off the map when the next Ice Age begins, a few may survive, and the resulting culture may stand at the same stage 120,000 years from now, that we stand on today and may choose more wisely and move forward. Only we, ourselves, are affected by how we choose. The potential certainly exists for the standard of truth to be raised once again, in science and in society, in the interest of the general welfare of humanity. When we start breaking ground on this front, then we have a basis for winning the war, and a basis for hope. Failure to move on this front is an act of committing suicide by default. Moving forward on this front is the path to life and freedom. We are in a race against ignorance, and this includes ignorance of what humanity really is and is capable of achieving.


(42 Free universal housing in new cities )



When this ground-braking progress begins, the human potential that we have, becomes realized, which is the potential we all have as human beings. Then, the awakening realization may inspire in society a commitment to break with its past of colonial, imperial looting and wars, even nuclear wars and doctrines for depopulation, and will inspire in society a commitment to the building of a renaissance of culture and freedom in human living, such as has never been imagined as being possible before. Even the concept of the nation and national culture will then become uplifted towards the common embrace of all mankind. If this uplifting of the identity of a nation as a human treasure remains unrealized, then many a great nation, especially from among the northern nations, will cease to exist when their territory becomes uninhabitable under the coming inactive Sun.

A nation isn't a land. It is far greater than that. A nation is a diamond, made great by productive and creative potential. The future rests on this potential. Land is only needed to fulfill the potential. If not enough land exists in areas where it needs to be, let's create it. Let's build vast automated industries for high-temperature processing, powered with nuclear energy, processing basalt for building the infrastructures with, and for the production of free universal housing in the new cities. If we commit ourselves to this, we are on course towards survival. 


(43 In honour of Canada's birthday celebration )



Canada, as a nation, can greatly contribute to the process. It owns the world's second-largest deposits of basalt, the needed energy resources to utilize the material, a commitment to technological progress, and a history devoted in many ways to the freedom of mankind. This video is produced in part in honour of Canada's birthday celebration, commemorating its formal founding on the First of July in 1867. 


(44 American birthday celebration on the Fourth of July )



The video is also produced in honour of the American birthday celebration on the Fourth of July that commemorates the nation's founding with the adoption of its Declaration of Independence in 1776. These celebration days become meaningless when the nations' commitment to their future is lost.

Into which direction Canada and the world will be heading, will be decided in the near term wile time remains. The choice shouldn't be hard to make. Also it needs to be made by the whole of humanity. The failure to respond to the Ice Age imperatives would be synonymous with the world committing its children to death. Inversely, the timely responding to the imperatives would usher in a bright new world for everyone. And so, in considering what is at stake, I would say that we will make the effort to do what is necessary to survive, and not just to 'survive', but to have an endless future with abundantly rich living and happiness in every respect.


(45 Supporting exploration videos )



Supporting exploration videos by Rolf Witzsche


(46 Celebrating the Near New Ice Age )



Celebrating the Near New Ice Age


(47 Cold Fusion powers the sun )



Cold Fusion powers the sun


(48 Ice Age of the dimmer sun in 30 years )



Ice Age of the dimmer sun in 30 years


(49 Our electric fusion Sun )



Our electric fusion Sun


(50 Electric planets electric Earth )



Electric planets electric Earth


(51 Electric Mars )



Electric Mars


(52 Energy future )



Energy future


(53 Unlimited fresh water )



Unlimited fresh water

Home Page

Please consider a donation - Thank You

Published by Cygni Communications Ltd. North Vancouver, BC, Canada - (C) in public domain - producer Rolf A. F. Witzsche