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Toy inventor Tim Kehoe took 11 years to create the world's first colored bubbles. Why did "Zubbles" take so long to invent?
Kehoe had to search for a dye that would bond with the molecules, or two or more atoms joined together, that make up a bubble. Most dyes didn't attach to the molecules. So instead of coating the bubble in a vibrant hue, the dye just pooled in an inky puddle at the bottom of a clear bubble. After thousands of tries, Kehoe finally found a molecule-bonding dye. But it wasn't perfect: "If the bubble landed on your skin or clothes it would stain for weeks," says Kehoe.
So Kehoe hired a ...