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È convinzione generale che la matematica sia una materia difficile da capire, che usa simboli esoterici e un linguaggio poco comprensibile, che sia soprattutto calcolo. Certamente, è una materia particolare, che ha bisogno di formule e che necessita di un linguaggio formale a volte molto sofisticato. Tuttavia, è anche una scienza piena di idee, che non hanno solo la funzione di progredire in una qualche teoria o di servire altre scienze per i loro modelli quantitativi. Come la filosofia, come la letteratura, la matematica è utile all'uomo per cercare di capire un po' meglio il mondo che lo circonda, e soprattutto se stesso. Convinto profondamente di questo, l'autore propone alcuni argomenti, che sono particolarmente adatti a mettere in luce questo aspetto della matematica. L'autore utilizza, a volte, un linguaggio più matematico per completare il ragionamento, ma è del tutto convinto che il lettore interessato possa seguire tutti i suoi ragionamenti perché, parafrasando un grande matematico del secolo scorso, "chi non ha dimestichezza con le tecniche matematiche si renderà conto di potersela cavare senza problemi ignorandole del tutto" (J.F.Nash, jr).

Science --- popularisering wetenschap --- wetenschappen

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Science --- popularisering wetenschap --- geneeskunde

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Why Popcorn Costs So Much at the Movies, And Other Pricing Puzzles unravels the pricing mysteries we encounter every day. Have you ever wondered why all movies, whether blockbusters or duds, have the same ticket prices? Why sometimes there are free lunches? Why so many prices end with "9"? Why ink cartridges can cost as much as printers? Why merchants offer sales, coupons, and rebates? Why long lines are good for shoppers? Why men earn more than women, around the globe - and why they always will? Richard McKenzie goes on to show how the 9/11 terrorists still kill Americans every day, because their attack distorted the perceived risks and relative prices of air vs. automobile travel, and jacked up both security costs and flight delays. Professor McKenzie also explores the unintended consequences of well-meaning efforts to spur the use of environmentally friendly fuels: starvation among millions of people around the world, and the destruction of rainforests in Malaysia and Indonesia. How can these things be? If you think you know the answers, think again. Why Popcorn Costs So Much at the Movies, And Other Pricing Puzzles shows you that the real reasons are sophisticated and surprising - and in Professor McKenzie's hands, both informative and entertaining. You won't need a degree in economics to enjoy this fascinating book, just an armchair and an inquiring mind. "This is one of the very best books on pricing. If you are looking to understand the economics of the world around you, you can do no better than to start here." Tyler Cowen, George Mason University; economics blogger of "www.marginalrevolution.com" "Truly liberating. Using a series of fascinating enigmas we've all encountered in our daily lives, Richard McKenzie reveals how the real economic world works. Highly readable. Extraordinarily enlightening." W. Michael Cox, senior vice president and chief economist at the Federal Reserve Bank of Dallas "Anything we think about every day is important. And who goes a day without thinking about prices? But prices are more important than most people realize. If you are interested in reducing pollution from cars, or not being fooled into paying too much, or too little, for products, or in just getting the best deal on popcorn at the movies, you will benefit from knowing more about prices than most people do. And there is no easier, or entertaining, way of finding out more on how and why prices are important than by reading McKenzie's fascinating book Why Popcorn Costs So Much at the Movies, And other Pricing Puzzles. And are people really fooled by all those prices that end in 99 cents? You'll be surprised." Dwight Lee, University of Georgia

Science --- Economics --- popularisering wetenschap --- economie

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Science --- Economics --- popularisering wetenschap --- economie

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There have been only a handful of famous deep sky "catalogs," including Charles Messier's, which was the first and remains the most famous. Messier was a comet hunter, and in the late 1700s he published a list of 109 objects in the sky that were not comets. In December 1995, Sky & Telescope published a list of deep sky objects sent to them by British amateur astronomer extraordinare, Sir Patrick Moore (officially, Sir Patrick Caldwell-Moore). It was a huge hit! Sir Patrick may be the most prolific authors of astronomy books for all time and has been presenting the BBC Sky at Night television series since April 1957. Moore's list contained 109 non-Messier objects that were Patrick's favorites, many of them visible only in the southern hemisphere. Accompanying the list of objects were long exposure black and white and color photographs of some of these objects. In this book Martin Mobberley, who has known Sir Patrick Moore for many years, describes these objects and tells how to locate them. He discusses the best ways to visually observe them and image them. He also tells a little of Moore's life and observing practices and how he made his choices for the "catalog." If you're wanting a challenge for your newly acquired telescope, or are interested in seeing what others have highlighted as some of the greatest sights in the night sky, this book will set you on the path of discovery.

Science --- Astrophysics --- Astronomy --- astrofysica --- popularisering wetenschap --- astronomie