#Moiré Effect #education

本站添加: 2026-06-02

[00:00:00]This strange pattern helps catch fake money. When two sets of fine lines overlap and move, they create a wavy design called the moire effect. The same trick is used in banknotes and passports. If someone tries to copy them with a regular scanner or printer, a distorted pattern appears, making the fake easy to spot. So, this weird-looking effect is actually a smart security feature.