In 1915, Coca-Cola challenged glassmakers to design "a bo... | funfact.wiki

In 1915, Coca-Cola challenged glassmakers to design "a bottle a person will recognize even in the dark by feel alone." The resulting ribbed contour shape worked so well that by 1949, over 99% of Americans could identify a Coca-Cola bottle blindfolded.

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In 1915 Coca-Cola asked glassmakers for a bottle recognizable by touch in the dark or by its shards. Designer Earl Dean found no images of coca leaves or kola nuts, so he sketched a similarly named cocoa pod instead—the mix-up shaped the bottle.

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Smartphone app icons are not rounded squares — they are "squircles," a portmanteau of square and circle. Defined by the mathematical equation |x|⁴ + |y|⁴ = r⁴, this superellipse shape gives a smoother, more pleasing impression than simply rounding the corners.

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