This was fascinating– real sand paired with AR gear to project contour lines and simulated rain and water. The tech being used isn’t that expensive either. There is a Kinect camera, a fairly basic PC, and a projector. Kreylos states in the video that the camera can detect marks in the sand as small as 2mm. This would be a fascinating way for students (young or old) to learn about topography, rain fall, water erosion, etc.
Is the Star Trek holodeck finally here?