Top = Before. Bottom = After. Only the E-field sine waves are shown (no B, no Poynting). Exactly one blue and one green wave per panel. In Stage 3, the bottom green wave oscillates 3× faster in time (same spatial wavelength). Blue looks the same top & bottom.
Stage 3 shows your concrete numbers. Stage 1/2 display no exchange (ΔE≈0).
| Description | Initial λ | Initial E (J) | ΔE (J) | Final λ | Final E (J) |
|---|