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What famous toy was a by-product of development for the needs of the navy? Detailed answer

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What famous toy was a by-product of development for the needs of the navy?

In 1943, engineer Richard James Thompson was working on a spring-loaded device that would compensate for sea roll for sensitive ship instruments. One day he accidentally pushed a spring off a shelf and saw it first "step" onto the table and then onto the floor and gather itself into a tight position. Deciding that such a spring could be a great toy, he experimented with different grades of steel wire for a year until he found the perfect one. Thompson and his wife set up a business, and stair-walking springs, dubbed "Slinky", gained immense popularity. Later, plastic counterparts with bright colors, known as "rainbows", appeared.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

What was the highest scoring football match in history?

In 2002, the Madagascar football club Stade Olympique L'Emirn fought for the title of national champion, but in the penultimate match it drew due to a controversial penalty in the last minutes of the meeting and lost its chances for the championship. As a sign of protest in the last match against AS Adema, the Stade Olimpika players began to score goals into their own nets from the very beginning of the match. The final score of the meeting 149:0 in favor of AS Adema has been a world record ever since.

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