interesting facts

Why Are Banknotes Different Sizes and Colors? The Hidden Design Choices That Protect Your Money

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Take out a few banknotes from your wallet and place them side by side. Even without reading the numbers, you can probably tell which one is worth more. One feels longer, another wider. One bursts with color, while another feels deliberately restrained. This isn’t accidental. It isn’t decorative. And it certainly isn’t arbitrary. Every banknote … Read more

Why Are Airplane Windows Oval? The Life-Saving Design Choice You’ve Probably Never Noticed

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If you’ve ever flown on an airplane, you’ve looked out of the window at clouds, cities, or endless ocean below. But there’s something about airplane windows that most of us never question. They’re not square.They’re not rectangular.They’re not even perfectly round. Instead, airplane windows are oval. And that shape isn’t about aesthetics, comfort, or style.It’s … Read more