Hiroshi Ishii and his group at the MIT Media Lab took a ping-pong table and placed a projector above it, and on the ping-pong table they projected an image of water with fish swimming in it.
a na povrch stolu promítali obraz vody s rybičkami. Pokaždé, když se míček dotknul povrchu, způsobil kruhy kolem místa dopadu a rybičky vyplašil.