A CLOCK made of bubbles is the brainchild of Fred Romberg of the California
Institute of Technology. Romberg got the idea after watching the bubbles in a
glass of soda. “I thought that if I could control the motion of the bubbles, I
could start making letters, numbers and other shapes with them.”
Romberg has now built a prototype clock to demonstrate the idea. Two sheets
of glass make the front and back of a thin tank filled with baby oil. A row of
tiny valves along the bottom releases bubbles of dye into the oil. Because the
dye is…
