Stress - Relieving Sandscapes Transform with Every Flip Funky, colorful and shaped like a 70's TV screen, the Screenies are cool interactive desk art where the sand landscapes slowly changes each and every time you turn it over. It's meditative and cool to watch! Measuring 7" x 4" Screenie frames (which include a drop in base) are made of durable plastic. The Science Behind the Sand Pictures Screenies include natural sands and crushed minerals. Water permeates between the grains, resulting in the exchange of sand and water from top to bottom. The weight of the sands creates pressure. The sands fall through the weakest links in the air barrier to create mountains, valleys and dunes. With different densities, each mineral has its own weight so these sands won't mix.
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