Interactive Notebook
The vacuum keeps its books.
Casimir energy is real. The scale is unforgiving. This module shows how the energy density and pressure change as plate separation moves from microns to nanometers.
Model basis
Ideal parallel-plate energy density:
u(d) = -π² ℏ c / (720 d⁴)
Ideal plate pressure:
P(d) = -π² ℏ c / (240 d⁴)
Public meaning
The model makes the scaling visible. Small gaps matter. Boundary conditions matter. The numbers grow quickly as distance shrinks.
Frontier context
This page is the bridge between real vacuum-boundary physics and frontier questions about negative energy, dynamic boundaries, and spacetime. It keeps the scale visible.