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Marcus du Sautoy

The Number Mysteries: A Mathematical Odyssey through Everyday Life

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From the author of The Music of the Primes and Finding Moonshine comes a short, lively book on five mathematical problems that just refuse be solved – and on how many everyday problems can be solved by maths.
Every time we download a song from i-tunes, take a flight across the Atlantic or talk on our mobile phones, we are relying on great mathematical inventions. Maths may fail to provide answers to various of its own problems, but it can provide answers to problems that don't seem to be its own – how prime numbers are the key to Real Madrid's success, to secrets on the Internet and to the survival of insects in the forests of North America.
In The Num8er My5teries, Marcus du Sautoy explains how to fake a Jackson Pollock; how to work out whether or not the universe has a hole in the middle of it; how to make the world's roundest football. He shows us how to see shapes in four dimensions – and how maths makes you a better gambler. He tells us about the quest to predict the future – from the flight of asteroids to an impending storm, from bending a ball like Beckham to predicting population growth.
It's a book to dip in to; a book to challenge and puzzle – and a book that gives us answers.
Эта книга сейчас недоступна
462 бумажные страницы
Год выхода издания
2010
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Цитаты

  • Mesutцитирует6 лет назад
    in the picture predicting the pendulum’s behaviour where a small change in the initial position of the pendulum wouldn’t cause it to end up at a different magnet. And it’s the same with the weather. Think of the large black region in the picture as the weather in a desert: it’s always going to be hot there, however hard a butterfly flaps its wings. And similarly for the arctic, which is like the magnet staying in a white region. But the weather for the UK is like the pendulum starting at a place where the colours in the picture change rapidly with just a small shift in the pendulum’s position.
    If we knew the precise positions and speeds of all the particles in the universe, we could predict the future with certainty. The trouble is that if you get one of those starting positions even slightly wrong, the future can turn out to be completely different. The universe may behave like clockwork, but we’ll never know the positions of the cogs accurately enough to take advantage of its deterministic nature.
    Heads or tails?

    The 1968 European Football Championship was held before penalties were introduced as a way of deciding a drawn match. So when Italy and the Soviet Union were still goalless after extra time in their semi-final, a coin was tossed to decide which of them would go through to the final. It has been universally acknowledged since Roman times that a coin is a fair way to decide a dispute. After all, it’s impossible to tell as it spins through the air how it will land. Or is it?
  • Mesutцитирует6 лет назад
    The star cluster M13 is 25,000 light years away, so we’re still waiting for a reply. Don’t expect a response for another 50,000 years!
  • Mesutцитирует6 лет назад
    A lunar month, the beginning of which is determined by the sighting of the new moon at Mecca, is about 29.53 days, making a lunar year 11 days shorter than a solar year. 365 divided by 11 is approximately 33, so it takes 33 years for the month of Ramadan to cycle its way through the solar year, which is why Ramadan slips through the year as reckoned by the Gregorian calendar.

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