Grit on Instagram: "Firefighters use training dollhouses to visually demonstrate how fire, heat, and smoke behave inside buildings. These scaled models reveal real fire dynamics, showing how flames spread through rooms and hallways exactly as they would in full-sized structures. A key lesson taught with these models is door control. Opening a door or window feeds a fire with oxygen, causing rapid fire growth and dangerous heat movement, while closed doors can slow flames, reduce temperatures, an

Engineering | Science | Technology on Instagram: "The Victoria Dam, Sri Lanka’s tallest dam, isn’t just a marvel of engineering — it’s a lifeline for power, irrigation, and flood control. 🌊 During heavy rains, its spillway gates open automatically, releasing thousands of cubic meters of water per second into the Mahaweli River below. This controlled surge protects the dam from overtopping, safeguards downstream communities, and keeps hydroelectric generation running smoothly. Witnessing the gat