Watch Mountains & Rivers Come to Life with This Sand-Based Map

Most sandboxes wait for children on a playground or the occasional zen garden raking. This one combines light, sand, and depth cameras to create a completely malleable topographical map you can alter with a brush of your hand. Video: . Gary Glesener, director of the Modeling and Educational Demonstrations Lab (MEDL) at UCLA, set up an augmented reality sandbox that projects topographical color-coding based on the height of that sand. Make a dent and it'll turn into a lake. Form a lump and...

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