technologys on Instagram: "Handcuffs are mechanical restraints used to limit a person's wrist movement by locking both wrists close together. Each cuff has a ratchet mechanism with small teeth that allow it to tighten in one direction but not loosen without a key. When the cuff is closed around the wrist, the teeth engage with a spring-loaded pawl that locks it securely. A double-lock feature can also be activated to prevent the cuff from tightening further, ensuring safety and comfort. Handcuff

UNIVERSE | SCIENCE | TECHNOLOGY on Instagram: "Ever wondered how handcuffs lock so securely with just one click? 👀 This animation shows the internal locking mechanism of handcuffs, explaining how a simple mechanical system creates strong, reliable restraint 🔩 Inside the cuff, a ratchet-and-pawl mechanism allows movement in one direction only. When the cuff tightens, the teeth move forward. When pressure is released, the locking pawl drops into place — preventing it from opening backward 🔒 A s