Osaka Station Projected Images on Waterfall

[kazora1001]

woah, how is it done?

[fohkukohgeki]

@kazora1001 Based on watching it and the (poorly written) article linked to by the original poster that it uses a series of small nozzles in a line. The whole space beneath them is illuminated, lighting up any water that passes through. How long each nozzle is kept open determines the height at any given point and which nozzles are run at the same time sets the width.