"We may take what I call the broad sense of 'physical' to mean objects that are spacetime-occupying and energy possessing (at least, we will see, above the Planck scale). ... I will mean something narrower, namely the objects of high-energy physics, the domain of reality for quantum, relativistic, cosmological theories, and the laws of thermodynamics, or what is called 'fundamental' physics. The physical is the smallest components and widest environments of of spacetime-energetic systems.

"Whatever else it refers to, 'material' indicates ponderable matter with non-zero mass, the kinds of things studied by classical solid-state physics, astronomy, chemistry, and the Earth sciences, and not fields, waves, and mass-less particles like photons."

"We may take what I call the broad sense of 'physical' to mean objects that are spacetime-occupying and energy possessing (at least, we will see, above the Planck scale). ... I will mean something narrower, namely the objects of high-energy physics, the domain of reality for quantum, relativistic, cosmological theories, and the laws of thermodynamics, or what is called 'fundamental' physics. The physical is the smallest components and widest environments of of spacetime-energetic systems.

"Whatever else it refers to, 'material' indicates ponderable matter with non-zero mass, the kinds of things studied by classical solid-state physics, astronomy, chemistry, and the Earth sciences, and not fields, waves, and mass-less particles like photons."

Slots and Values
ref	90
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