COLORED BUBBLES—A BREAKTHROUGH.

COLORED BUBBLES—A BREAKTHROUGH. An article by Ann Zimmerman in the Wall Street Journal (April 1) told how scientists at Crayola after years of work have come up with a product that lets kids blow bubbles in vivid colors. Crayola is thrilled about the product. The scientific problem in making colored soap bubbles is that the wall of the film of soap is less than a millionth of an inch thick. If you add enough color to make it noticeable, it’s hard to make bubbles. The article seems to focus on the drawbacks of the new product. There’s a long list of products that the bubbles have to be kept away from (brick, wood, carpeting…). Repeat clothes washing may be necessary. I prefer to think about Crayola’s achievement.