KNOWLEDGE HUB on Instagram: "🚜 Farmer Flips a Pipe to Shut Off Water in Seconds • Irrigation systems move huge volumes of water nonstop. • Fast control is critical to prevent flooding. • This trick uses basic fluid mechanics. • No electricity. No valves. No switches. • Water flows due to pressure and gravity. • When the pipe stands upright, flow remains stable. • Flipping the pipe instantly changes pressure balance. • Air rushes inside the line. • Continuous water column breaks. • Suction is lo