Physical FORCE -- What It REALLY IS ! Most orthodox physicists do NOT know what a force REALLY IS. The best that they can do is to define it in terms of what it DOES -- accelerate a mass, (F = ma). Yet, they ARROGANTLY use the terms "PSEUDO FORCE" and "FICTIONAL FORCE" to describe forces like CENTRIFUGAL FORCE and the CORIOLIS FORCE. The physicists have FAILED to pick up the CLUE, about what a force really IS, from the fact that these so-called "pseudo forces" result from MOTIONS. According to the GENERAL UNIFIED Theory of the Physical Universe developed by the late Physicist Dewey B. Larson, each force is a MOTION, or a COMBINATION OF MOTIONS, or a RELATIONSHIP BETWEEN MOTIONS, including INWARD and OUTWARD SCALAR MOTIONS, in the form of TRANSLATIONAL, VIBRATIONAL, ROTATIONAL, or ROTATIONAL-VIBRATIONAL motions. For example, the expansion of the Physical Universe is simply an OUTWARD SCALAR MOTION, which is an INHERENT PROPERTY of the Universe and NOT a result of a "big bang", [which means that "Hubble's constant", whatever its correct value, can NOT be used to determine the age of the physical Universe.]. Gravitation is an INWARD SCALAR MOTION that obeys the inverse square law. MOTION is what makes a homogeneous gravitational field "EQUIVALENT" to a uniformly accelerated reference frame, (which is in a certain kind of MOTION). For objects moving at speeds close to the speed of light, acceleration drops toward zero, (a = F/m), NOT because "mass increases toward infinity" (mass really STAYS CONSTANT), but because FORCE decreases toward ZERO (because of the RELATIONSHIP BETWEEN MOTIONS of the near-light speed of the object and the OUTWARD SCALAR MOTION of light at the speed of light). In Larson's Theory, the "strong nuclear force" and the "weak nuclear force" DO NOT EXIST. They are merely AD HOC ASSUMPTIONS, resulting from an ERRONEOUS model of the atom. A WEALTH of information about Physicist Dewey B. Larson's GENERAL UNIFIED Theory of the Physical Universe, ("The Reciprocal System of Theory"), can now be found at the web site http://www.rstheory.com . Robert E. McElwaine B.S., Physics and Astronomy, UW-EC P.S.: PASS IT ON !