Editorial comment

It’s often hard to predict how the inventions created to advance one industry will find applications in others. The microwave oven was invented because American engineer Percy Spencer discovered that a chocolate bar he had in his pocket while working on an active radar set had melted. The fiberglass fabric created for the spacesuits worn by NASA astronauts is now used for roofing at several airports and sports stadiums around the world. The Gutenberg printing press borrowed screw technology used in wine and olive presses of the time, and Silly Putty was born out of an attempt to create a synthetic rubber during the shortages of World War II.

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