Decantation is a separation technique used to separate a liquid from solid particles or another liquid with different densities. This process involves carefully pouring the liquid from a container, leaving the solid or denser liquid behind. It is commonly used in laboratories and industries to clarify liquids or remove impurities. In everyday life, decantation can be seen when pouring wine from a bottle into a glass, allowing sediment to remain in the bottle. This method is also used in processes like water treatment and oil refining, where separating components is essential for achieving purity and quality.