What most people miss
Waves don’t only travel — they rewrite each other. Crest meets crest and brightens; crest meets trough and vanishes. The screen keeps the receipts.
Interference is honesty about path and phase — not a story that observers invent reality.
Why it matters
From soap films to antennas to precision optics, canceling and reinforcing waves are how nature edits its own patterns.
Human Life angle
Two chalk slits, circular ripples, a fringe screen — monochrome physics, no mysticism.