https://jjm.net/index.html 2026-02-19 monthly 1.0 https://jjm.net/figures/cavity/cavity_ux_comparison.png Longitudinal displacement comparison showing helixity coupling signature https://jjm.net/figures/cavity/cavity_delta_ux_heatmap.png 2D heatmap of coupling-induced displacement in a microwave cavity https://jjm.net/figures/cavity/cavity_fourier.png Fourier spectrum showing third-harmonic generation from nonlinear cross-coupling https://jjm.net/figures/cavity/cavity_gw_polarisation.png Gravitational-wave polarisation profiles from helixity coupling https://jjm.net/figures/cavity/cavity_torsion_comparison.png Torsion backreaction from electromagnetic standing wave https://jjm.net/figures/cavity/cavity_torsion_heatmap.png Torsion field in coupled microwave cavity simulation https://jjm.net/vacuum.pdf 2025-12-20 monthly 0.7