Brainbites.io on Instagram: "The post features video demonstrating a physics experiment using two connected glass bottles on a beach: water poured into the upper empty bottle creates a pressure differential, causing colorful sprinkles in the lower bottle to rise through the tube via buoyancy and fluid flow, forming a vibrant, hourglass-like ascent. This setup illustrates hydrostatic pressure and Archimedes’ principle, where denser water descends, displacing lighter air and particles upward; a 20