Modern physics: ‘Mass ain’t what it used to be…’

13617_88fce63f42b8b78770aae2e70ccb67bc‘…We’ve certainly come a long way since the ancient Greek atomists speculated about the nature of material substance, 2,500 years ago. But for much of this time we’ve held to the conviction that matter is a fundamental part of our physical universe. We’ve been convinced that it is matter that has energy. And, although matter may be reducible to microscopic constituents, for a long time we believed that these would still be recognizable as matter—they would still possess the primary quality of mass.

Modern physics teaches us something rather different, and deeply counter-intuitive. As we worked our way ever inward—matter into atoms, atoms into sub-atomic particles, sub-atomic particles into quantum fields and forces—we lost sight of matter completely. Matter lost its tangibility. It lost its primacy as mass became a secondary quality, the result of interactions between intangible quantum fields. What we recognize as mass is a behavior of these quantum fields; it is not a property that belongs or is necessarily intrinsic to them.

Despite the fact that our physical world is filled with hard and heavy things, it is instead the energy of quantum fields that reigns supreme. Mass becomes simply a physical manifestation of that energy, rather than the other way around.’

via Nautilus


Was there really a big bang?

keating_brianCosmologist Brian Keating:

‘You can’t prove a theory, but you can falsify alternatives to it. What’s raging right now in cosmology is the question of whether inflation is a theory. Is it science? Is it falsifiable? There are many eminent cosmologists and theoreticians, from Roger Penrose, Paul Steinhardt, and many others who are just as eminent as a physicist working on inflationary cosmology, who claim that not only is it not provable, it’s not even science because it cannot in principal be falsified.’