Why do big ships float? [Buoyancy and flotation explained]

👁️ on Instagram: "The post features a montage of physics demonstrations that mimic magic, such as the fire-induced vacuum pulling an egg into a bottle via rapid air cooling and pressure differential, a classic experiment rooted in the ideal gas law (PV=nRT). Ferrofluid spikes formed by a neodymium magnet illustrate ferromagnetism, where nanoscale iron particles align in a carrier fluid under magnetic fields, as studied in materials science for applications like seals and sensors (e.g., peer-rev