| Date: Fri, 9 May 2003 16:45:16 
      -0500
       
        
        Dear Malcolm, 
        
          
        
        The assumption that an 
        object or physical system cannot start moving through space from an 
        internal force produced inside the system is based on Newton's third 
        law; that for every action there is a reaction. 
        
          
        
        What is usually 
        assumed is that the reaction force is equal and opposite to the action 
        force, but this is rigorously true only in a flat spacetime.  In 
        Newton's time, general relativity and curved spacetime were not yet 
        conceived or known.  The Newtonian flat spacetime assumption is usually 
        good for the vast majority of ordinary applications and situations. 
        
          
        
        However, more 
        rigorously the production of an internal force involves producing a 
        curvature of spacetime acting upon a mass.  The production of its 
        opposite and equal reaction force (internal) also involves producing a 
        curvature of spacetime acting upon that mass. 
        
          
        
        If the overall 
        spacetime where these two forces exist has a net curvature, i.e., if the 
        two spacetime curvatures that produce the action force and its reaction 
        force are not equal in magnitude, then the internal force and its 
        reaction force are not equal and opposite. That is a general 
        relativistic situation in a net curved spacetime, so then there does 
        exist a net unilateral force on the vehicle. 
        
          
        
        This is more easily 
        seen when one envisions the time flowing at a different rate for the 
        internal action force than for the internal reaction force.  The two 
        impulses then (force x time) are unequal.  This results in a net force 
        (thrust) of the vehicle vis a vis the local curved spacetime. 
        
          
        
        In that case, the 
        object can indeed move unilaterally to a generated internal force, in 
        such a curved spacetime, by creating unbalanced internal forces 
        judiciously. 
        
          
        
        It is also true that 
        all 3-space energy enters 3-space at a given point, from the time 
        dimension, and then exits back to the time dimension. What we call 
        "propagation of energy through 3-space" does not and cannot exist.  
        3-space along is totally static; without a time dimension, everything is 
        frozen and is a single frozen snapshot (observation) of something 
        ongoing in 4-space, by introducing the operator d/dt(LLLT) = LLL.  No 
        observable exists in time a priori, since time is not observable, even 
        in theory. 
        
          
        
        What we call 
        "propagation of energy through 3-space" is actually the propagation of 
        that 4-circulation in 4-space, with us seeing iterative 3-space "frozen 
        snapshots" called "observations" of the object.  Precisely like a 
        "motion picture" where we think we see motion, but actually see only an 
        iterative series of changes of frozen 3-space snapshots. 
        
          
        
        Except for 
        extraordinarily powerful EM fields, the normal EM fields do not produce 
        sufficient gravity or antigravity (curvatures of spacetime) to be 
        practical at all. To be practical, enormously more energy density in 
        spacetime is required than in normal EM fields alone.  However, that can 
        be achieved when one realizes that the present EM field theory has been 
        grossly distorted.  Specifically, a field from a source charge is 
        actually a flow of EM energy from that charge, and since fields are 
        actually misdefined as what gets diverged from them by a unit point 
        static charge, what is usually called the "field" of the source charge 
        is only the Poynting diverged component that flows from the source 
        charge.  I.e., it is the component of the energy flow that is in a 
        linear form and can be diverged by intercepting/diverging charges.  In 
        addition to that linear Poynting component of flow, there is an 
        enormously larger circuital (non-diverging) Heaviside component of the 
        flow that usually does not interact with anything, and thus was 
        arbitrarily discarded by Lorentz on the grounds that "it has no physical 
        significance" because it doesn't do anything. 
        
          
        
        However, there are 
        ways to intercept that circuital flow; the Bohren experiment (negative 
        resonance absorption of the medium) is one.  That type experiment is 
        done in all nonlinear optic labs routinely, and results in the emission 
        of some 18 times as much EM energy from the medium as one inputs to the 
        medium in one's Poynting component.  One actually also inputs a very 
        large Heaviside unaccounted component as well, of course --- energy is 
        conserved in the Bohren experiment, but only if one accounts the 
        Heaviside circuital flow component (which can be a trillion times as 
        great in magnitude as the Poynting component's magnitude). 
        
          
        
        Discarding the 
        Heaviside component freed the electrodynamicists from having to face the 
        awful truth that every generator or battery (or other power source) 
        actually outputs about a trillion times as much energy as we input to 
        the silly shaft of the generator or dissipate as chemical energy in the 
        battery.  But almost all that output is in the Heaviside circuital form, 
        and usually does not interact with much of anything.  Good thing!  Else 
        just to take a flashlight battery into New York City would fry the 
        entire city (if all that Heaviside energy flow component interacted). 
        
          
        
        Practical antigravity 
        is achieved by using the Dirac sea 4-hole (the negative energy 
        4-electron) in the vacuum (in spacetime itself) as a "source charge" 
        BEFORE it interacts with mass to form a positron.  The positron has 
        positive mass-energy and positive energy fields.  The 4-hole has 
        negative mass-energy and negative energy fields. When one adds the 
        Heaviside component to the fields (the component discarded by Lorentz 
        circa 1890s), then the negative energy EM fields with their enormous 
        extra negative energy component can and do accomplish curvature of the 
        local spacetime in the negative sense, resulting in antigravity rather 
        than gravity. 
        
          
        
        To use such practical 
        antigravity, one must first produce Dirac Sea holes that do not quickly 
        interact, but that persist for awhile.  That way its negative energy 
        fields and their giant Heaviside components persist for awhile, 
        accomplishing powerful antigravitational curvature of local spacetime.  
        That locally curved spacetime acts upon the vehicle or power system 
        producing the source 4-holes, thereby producing force that is opposite 
        in direction from the normal gravitational force.  When the AG-force 
        equals the G-force, hovering exists.  When the AG-force exceeds the 
        G-force, levitation occurs.   By "inclining" the levitation force, a 
        forward thrust component can be achieved in any direction, much like a 
        Helicopter produces forward thrust. 
        
          
        
        The Sweet experiment  
        is  mentioned in my book, Energy from the Vacuum: Concepts and 
        Principles, Cheniere Press, 2002.  One chapter of the book goes into 
        practical antigravity and the Sweet experiment and its results. 
        
          
        
        Best wishes, 
        
        Tom Bearden 
        
          
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