Tetris played in 3D... on 9000-droplet-per-second liquid projection TV (video)
![](https://s.yimg.com/ny/api/res/1.2/z8lohEJ62PRg.WbQivZZTw--/YXBwaWQ9aGlnaGxhbmRlcjt3PTcwNTtoPTQ2NQ--/https://s.yimg.com/uu/api/res/1.2/pJcXN8ExFNsakbgXsXLCrg--~B/aD0yNzc7dz00MjA7YXBwaWQ9eXRhY2h5b24-/https://www.blogcdn.com/www.engadget.com/media/2010/07/7-4-10-tetris3dwater.jpg)
Sure, we've seen Tetris pop up in unusual places before, but never on a liquid 3DTV. While rows of droplets don't actually create the image here -- it's merely "painted" onto the falling H2O pixels -- computer-controlled solenoid valves can cycle 50-droplet curtains of water at up to 60Hz, making for a video-capable projector screen. See it in action after the break, or hit up the source link for a deep dive into how it works.