Читать книгу The Concept of Uncompromising Humanism - Hans Widmer - Страница 7
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Matter from the void:
dynamics of the logically essential continuum
In order to gain an idea of the world, the human brain provides the a priori intuitions as the coordinate system (like a box) and a continuum within it (like the sand in this box). The task of physics should now be to represent the material world from the elementary particles to the universe using this “sandbox”. It is a long way from achieving this, as its two completed theories comprise 75 laws and constants, and those that are still partially incomplete well over one hundred. Despite this plethora of laws and constants, the starting point for all physics—inertia and gravity—remain unexplained; its four major theories do not interconnect, as it proceeds on the basis of phenomena, measures correlations in experiments and uses these to produce laws; in other words, it proceeds inductively. Whenever phenomena appear that are not explained by the existing laws, it adopts new concepts, thus increasing the number of independent laws and constants. It countered this tendency with a constant striving for unification (the “Theory of Everything”, “Grand Unification”, etc.)—since the pre-Socratic philosophers it has been expected that the world has a single, comprehensive explanation.
Despite all its triumphs, inductive physics1 has reached a crisis point, and significant thinkers criticise its tendencies towards the esoteric, to the extent that the Higgs boson could be said to be the carpet beneath which all contradictions are swept. String Theory, in particular, has met with scepticism and even scorn—“Not even wrong”.Woit The epilogues of textbooks often contain speculation as to the need for a totally “unexpected approach” in elementary particle physics, implying that “more of the same” would be unlikely to move things forward. Instead of “bringing down the concepts of space and time from the Olympus of the a priori”, as proclaimed by Einstein in 1921, it now appears that philosophy will have to take up the task of bringing down physics from the Olympus of the inconceivable.
The starting point of deductive physics
What all the concepts and principles of physics have in common is that they are located in the realms of human understanding. In his “Critique of Pure Reason” (1781), Kant stated that anyone who wants to understand the world must first explain what understanding means. The theory of relativity incorporates the movement of the observer in its laws, and quantum mechanics the effect of the observer, but they nevertheless perceive themselves to be uninvolved witnesses of an objective world.
A new “unexpected approach” must proceed on the assumption that
1.Physics is freely invented, not discovered in nature like hidden Easter eggs or the ideas of Plato (cf. Einstein’s notion that the concepts that occur in our minds are all free inventions);
2.These inventions are initially random hypotheses and only gain validity if they have passed through the eye of the experimental verification needle (like mutation and selection in evolution);
3.Space, time and causality are components of the system of thought—not of the world that is the subject-matter of that thought;
4.Perception is the basis of all knowledge—even if the most abstract mathematics is mounting up;
5.A continuum in space and time, in particular, is an inevitable necessity of thought;
6.There are hierarchies of knowledge whose higher levels do not arise from accumulation or abstraction, but—like concepts—are initially invented as hypotheses with their worth proved by the possibility that lower level laws and constants can be derived from them (hyperstases).
The logically essential continuum of deductive physics
The continuum does not remain a mere idea (as with Descartes) or something hidden away in mathematics (as with Einstein), but is the equivalent of a gas at a constant temperature2 (physics: “isothermal”), which is already implied by the equations of the theory of relativity; the continuum is specified by the fundamental constants3 c, G, and ħ and it explains that which inductive physics simply has to accept, namely why:
–Interactions do not happen instantaneously,
–Gravity and electromagnetism have the same velocity of propagation,
–Interferences at atomic distances bring about quantum mechanical phenomena,
–Interferences at distances of the magnitude of the elementary particle radius (Compton length) bring about the strong interaction.
In deductive physics, the dynamics of masses provides the starting point for all explanations of elementary particles, while inductive physics has not succeeded in bridging the gap between the macroscopic and elementary particles. N.B.: The continuum does not explain what it actually is—apart from indirectly through its functionality as a substrate for the idea of the material world. Those who can imagine the dynamics of the continuum have laid the foundations for all further understanding.
Dynamics of the specific continuum
Viewing the universe as filled by a continuum means that every microscopic spatial element is connected to the next, and that the connections extend across the whole of space.
Two intuitively logical accounts of a spatial element of this kind are used to determine the dynamics from which everything concerning inertia and gravity through to the theory of relativity can be derived:
–An account of the development of the density of the continuum as a result of flow: the density increases or decreases as more continuum enters or leaves. Formalising this logic gives what is known as the continuity equation4;
–An account of the development of flow as a result of downward density gradients. How does flow accelerate if at a point in space there is a drop in pressure? Pressure “wants to” level out, which triggers flow. The result is the Euler equation5, which states that the acceleration is proportional to a drop in pressure: the steeper the drop, the faster the acceleration—like when riding a bike.
Disturbance in the continuum
All the beauty, and an idea of the consequences, of this simple formulation of intuitive logic emerge on calculation of how a local pressure difference (in physics: “disturbance”) spreads vis-à-vis the smooth continuum at rest. As both “accounts” must be balanced simultaneously, there are two equations with two unknowns (density, velocity). Feeding one into the other results in a wave equation.6
Continuity
As with a pendulum, which alternates between the development of greater height or greater velocity, in a continuum there is more pressure or more flow. This imbalance moves off as a wave, because each communicates with the other, with a delay. The velocity of propagation of disturbances emerges from the solution of the wave equation; in a gas such as air this is the speed of sound. In the specific continuum this corresponds to the speed of light. As gravitational, electrical and electromagnetic fields are disturbances in the continuum, they all expand at the speed of light7. If the sun were to vanish instantaneously from the universe, not only would it go dark on Earth after 500 seconds, but the Earth would simultaneously fly out of its orbit.
Simply from the assumption of the specific continuum, mass can be reconstructed as dynamics of the continuum. Mass need no longer be considered as a corpuscle, thereby removing the insoluble puzzle of what constitutes the corpuscle. The single available “building block” of deductive physics is the continuum:
–The dynamics of masses is a pulsing of the continuum: it flows to a point8, then re-emerges in waves9 (inversely to the situation at the beach, where water rolls in as waves and returns to the sea as a flow).
–Inertia10 arises from the work needed to compress the inflow field to a mass (“Lorentz contraction”), that is associated with a relative velocity v vis-à-vis the continuum at rest.
–Gravity11 arises from the impact of the outgoing waves on inflow from a distant mass, in the same way as sources in any continuum attract sinks.
–Equivalence principle12: Einstein looked for the form of the laws that remains unchanged in accelerated coordinate systems; he called this the “equivalence principle”. It makes no difference to a mass whether it has a velocity relative to the continuum at rest or if it is in the inflow of another mass: the “headwind” is the same. The formulae are also the same, but for the fact that instead of kinetic energy, potential energy is used.
–Theory of relativity13 – the results are side effects of the dynamics of masses: contraction of inflow and radiation fields change wavelengths and consequently frequencies.
–Black holes14 occur when such huge quantities of mass have accumulated in a galaxy that the outgoing waves can no longer overcome the inflow; as a result they continuously draw in continuum together with the stars contained therein.
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–Universe15: The distance between galaxies is constantly expanding, indicated by red shift of the light received on Earth from very distant stars (like the deepening tone of a motorbike as is moves away from the listener). This expansion has also been essential in preventing the galaxies in the universe from clumping together long ago. The idea that “the universe is expanding” implies:
–Empty space: as the universe expands into a space where nothing was before, and where it was there is now less of it;
–Permanence: one and the same universe remains in place, but is redistributed in space;
–A continuum: as the expansion movement is shared with the whole and is inconceivable without a continuum,
–A drive: here, the potential c2 of the continuum is useful since it acts as the permanent pressure that also determines the dynamics of masses (in inductive physics it is an infinite! energy density at the point in time of the big bang).
Against this background, our universe is an initially-compressed continuum that since time t = 0 has been expanding into empty space. At the place where the velocity of expansion is equal to the speed of light, because signals can no longer be reflected, is the event horizon. If this is known (it is estimated at 13.75 billion light years), then—because of the constancy of expansion at the speed of light—the age is also known: 13.75 billion years. However, black holes in each of the billions of galaxies are at work re-“absorbing”the universe in the form of its inflow. There is nothing mysterious about this breathing in and out of the universe—the nature of the continuum means it could not be otherwise.
Inexplicable forces of attraction are at play in the galaxies, and inductive physics describes these with the undefined concept of dark matter. In deductive physics, on the other hand, the unexplained acceleration of stars towards the centre of galaxies does not originate in a force, but from the inflow to a black hole.
The universe is expanding with unexplained acceleration, and inductive physics describes this with the undefined concept of dark energy. In deductive physics the unexplained acceleration of the expansion comes again from black holes—those in the galaxies in the visible universe form a kind of gas made of sinks, and sinks repel one another.16
The ultimate cause of all material phenomena. The most productive dimension in physics is energy.17 For a volume of a real gas it is defined as energy = positive pressure multiplied by volume. However, if the same pressure applies outside the volume as inside it, the energy is equal to zero: it does not come from the pressure, but the difference in pressure. Similarly, the potential of the continuum is not the cause of movement in the universe, but is the same at its moment of greatest compression, the “moment of the big bang”, as in the conceivable infinite expansion with a density of zero and an infinite radius. The potential can be neither increased nor decreased; it is thus permanent, has no cause and is not itself the cause of anything.
Causes are only imbalances.18 They set the largest and smallest aspects of the world in motion. The potential of the continuum is the “substrate of dynamics” and is as permanent as the passage of time. It is the reason why time exists at all. Without wishing to stretch the concept unduly, time only comes into play with this potential, and this potential is only manifested in time. However this should not lead to any conception of the equivalence of potential and time—time remains an a priori intuition, and the potential of the continuum a logically essential model assumption.
Taken to its most abstract point, all matter arises from the density imbalance of the continuum in space, and is expressed as a dynamic, thus in time.