SCIENCE | FACT | KNOWLEDGE on Instagram: "This DIY setup shows how basic engineering principles can solve real rural or agricultural problems. Most rural innovations rely on: • Mechanical advantage (levers, pulleys, gears) to multiply force • Gravity-fed systems to move water without electricity • Pressure differentials for irrigation or spraying • Energy conversion (manual → mechanical → fluid movement) In agriculture, efficiency matters more than complexity. A low-cost system that reduces labo