liquid clock

waterclock.jpg
a 8m (26.5 feet) high clock that displays time as colored & filled up water vessels, using 260l (70 gallons) of a solution of water, methyl alcohol & food coloring. the alcohol prevents algae & fungus from growing inside the pipes while the food coloring allows visitors to see the clock’s function more clearly.
see also moniac machine.
[childrensmuseum.org & europa-center-berlin.de & marcdatabase.com|via luckypix.com]

wow!