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Inventions

Color Screens on Black and White TV Sets

Who remembers putting color screens on their black-and-white TV sets?It was the dream for many middle class American families in the 1950s and 1960s: colored TV. Although the technology was available since 1953, the high prices of colored television sets meant most families couldn’t afford the exciting advancement.Back when color television sets were luxury items,

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History of the Shopping Cart

Chronological Outline of the Evolution of Shopping Carts and SupermarketsOn June 4, 1937, Sylvan Goldman revolutionized the shopping experience with an innovation that seems almost mundane today but was transformative at the time—the shopping cart. Goldman, who owned the Humpty Dumpty supermarket chain in Oklahoma City, observed that customers often struggled to carry their purchases

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