A conceptual framework for describing physical quantities that can take on negative values in meaningful ways, beyond just mathematical convenience. Negative energy densities (predicted by quantum field theory), negative temperatures (achieved in laser systems), negative pressure (driving cosmic inflation), and negative mass (hypothetical) all fall under negative physics. It's the study of the physical regimes where our intuitive sense that "more" means "bigger positive number" breaks down, and the universe reveals stranger possibilities.
Example: "The Casimir effect proves negative energy densities are real—a genuine phenomenon of negative physics where empty space has less than zero energy between two plates."
by Dumu The Void March 11, 2026
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