ChillScrolls on Instagram: "This is called a Chladni plate experiment. When sound waves hit a surface, they create vibrations — some parts of the surface shake more, others barely move. The sand naturally shifts away from the vibrating areas and settles into the still ones, forming precise patterns. These aren’t random designs. Each frequency — each pitch of sound — creates its own unique shape. Higher frequencies usually form more complex patterns. This phenomenon shows that sound isn’t just so