The point-source fields were computed using the supplied direct 2D Yee FDTD solver with a moving Gaussian Norton source and split-field PML. Two constant-velocity runs provide forward-time playback in either direction. Scroll selects and advances recorded fields; changing direction blends between runs, rather than solving a new acceleration event in your browser. Display colors use a shared fixed scale.

Video-derived geometry is an approximation of shape and motion. Material properties and internal anatomy are separate modeling inputs.

The heart, hand, drone and falling-person animations are illustrative 2D Yee calculations with video-derived PEC masks. The drone plays briefly; the falling sequence now continues through landing and the brief leg rebound. The source video crops the lower silhouette after landing. The hand clip skips the initial entry and extra tail. Scroll direction controls forward or backward playback of the recorded video-derived fields; reaching a hand, drone or fall clip’s end while playing forward moves to the next section. Rewinding is recorded playback, not a new physical simulation. The supplied videos crop the forearm at the right edge; the adapted view keeps that crop at its boundary so the hand enters and exits naturally. Display-only spatial smoothing and contrast enhancement make the field visible; the electric field is masked to zero inside PEC. Scrolling changes playback speed. This is not a validation benchmark for the production software.