A speculative branch of physics concerned with mechanical systems operating under time-reversed conditions. If you could reverse time, Newton's laws would still hold (they're time-symmetric), but every collision, every trajectory, every mechanical interaction would play out backward. Retromechanics describes this reversed world: balls un-bouncing, pendums unsweeping, planets un-orbiting. It's a useful thought experiment for understanding why the Second Law of Thermodynamics (which isn't time-symmetric) gives time its direction, even though the underlying mechanics don't care which way the clock runs.
Retromechanics (Physics) Example: "The simulation showed planets orbiting backward, demonstrating retromechanics—gravity doesn't care about time's direction, even though everything else does."
by Dumu The Void March 11, 2026
Get the Retromechanics (Physics) mug.A broad term for any proposed physical framework that would systematically oppose or invert the known laws of physics. Unlike specific branches like anti-gravity (which opposes one force), anti-physics imagines wholesale replacement of physical law: anti-matter behaving opposite to matter in every way (not just charge), anti-entropy being the default, anti-inertia governing motion. It's the physics of mirror universes, of worlds where up is down, attraction is repulsion, and every "law" we depend on is systematically violated.
Example: "The novel's alternate dimension operated on anti-physics—light bent away from massive objects, friction accelerated things, and nothing made sense by our standards."
by Dumu The Void March 11, 2026
Get the Anti-Physics mug.Related Words
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
Get the Negative Physics mug.Reinterpreting Physics Through a Simulation Lens
This thought experiment explores the possibility that fundamental laws and constants of physics are not intrinsic properties of a naturally evolved universe, but rather emergent properties or resource-saving shortcuts implemented within a parent simulation
This thought experiment explores the possibility that fundamental laws and constants of physics are not intrinsic properties of a naturally evolved universe, but rather emergent properties or resource-saving shortcuts implemented within a parent simulation
The Heisenberg uncertainty principle is more likely digital physics 2.0 than naturally evolved physics (NEP) thus more likely resource-constrained simulation (RCS) phenomena.
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Get the Digital Physics 2.0 mug.Whenever something erradic happens in the binding of isaac, that defies the normal gameplay physics. A term coined by Sinvicta, to excuse his lack of skill.
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