The Comprehensible Cosmos: Where Do the Laws of Physics Come From?
For those fascinated by how physics explains the universe and affects philosophy, this in-depth presentation of the cosmos, complete with an appendix of mathematical formulas, makes accessible to lay readers findings normally available only to professional scientists. In a series of remarkable developments in the 20th century and continuing into the 21st, elementary particle physicists, astronomers, and cosmologists have removed much of the mystery that surrounds our understanding of the physical universe. We now have mathematical models that are consistent with all observational data, including measurements of incredible precision, and we have a good understanding of why those models take the form they do. But the question arises: Where do the "laws" revealed by the mathematical models come from? Some conjecture that they represent a set of restraints on the behavior of matter that are built into the structure of the universe, either by God or some other ubiquitous governing principle. In this challenging, stimulating discussion of physics and its implications, the author disputes this notion. Instead, he argues that physical laws are simply restrictions on the ways physicists may draw the models they use to represent the behavior of matter if they wish to do so objectively. Since mathematical descriptions of data must be independent of any specific point of view, that is, they must possess "point-of-view invariance" (maximum objectivity), they naturally conform to certain fundamental laws that insure that objectivity, such as the great conservation principles of energy and momentum. The laws of physics, however, are not simply an arbitrary set of rules since the observed data beautifully demonstrate their accuracy.
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What Are the Laws of Physics?
The Stuff That Kicks Back
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4-momentum 4-vector acceleration angular momentum assumed atoms axes axis baryon basic Beth black hole body called clock components conservation coordinate system cosmological constant decay describe dimensions direction distance early Universe Einstein electric charge electromagnetic electron energy density entropy equal equation of motion example experiment familiar fermions Feynman force Galilean gauge bosons gauge invariance gauge symmetry gauge transformation gravity interaction isospin kinetic law of motion laws of physics leptons Lorentz magnetic mass massless mathematical matrices matter measure moving Newton's second law Newtonian Note object observations operator parameters particle photon physicists Planck point-of-view invariance position potential energy pulses quantity quantum field quantum mechanics quarks radiation reality reference frame relativistic result rotation simply space-time spatial special relativity speed of light spin spontaneous symmetry breaking standard model supersymmetry tensor theory tion uncertainty principle vacuum energy vector velocity wave function zero zero-point energy