The ultimate navigation Failsafe. 🌊 Despite having super-accurate GPS, every ship and navy vessel carries a Sextant. Why? Because when satellites fail and the power goes out in the middle of the ocean, this 200-year-old mechanical marvel becomes your ONLY lifeline! Dive into the science of how this simple mirror instrument uses the sun to tell you exactly where you are on Earth. Pure genius!#حتمی نیویگیشن Failsafe۔ 🌊 انتہائی درست GPS ہونے کے باوجود، ہر جہاز اور بحریہ کے جہاز میں ایک Sextant ہو