This is from Japan, but it's an interesting piece of technology. I found it on Engrish.com, a site that posts Asian misspellings and bad attempts of English grammar on products sold in those countries. Anyhow, the waterfall spells out words and makes images in the water by turning it on and off rapidly. I imagine the software to do this would not be complicated, but the hardware and reliable, rapid valves and actuators to make it all come together has to be quite interesting.
http://www.youtube.com/watch?v=0HeUixe_Lpg
Here's the original site I found it on:http://www.engrish.com/
http://www.youtube.com/watch?v=0HeUixe_Lpg
Here's the original site I found it on:http://www.engrish.com/
