Trigonometry has always been the black sheep of mathematics. It has a reputation as a dry and difficult subject, a glorified form of geometry complicated by tedious computation. In this book, Eli Maor draws on his remarkable talents as a guide to the world of numbers to dispel that view. Rejecting the usual arid descriptions of sine, cosine, and their trigonometric relatives, h...(展开全部)

Trigonometry has always been the black sheep of mathematics. It has a reputation as a dry and difficult subject, a glorified form of geometry complicated by tedious computation. In this book, Eli Maor draws on his remarkable talents as a guide to the world of numbers to dispel that view. Rejecting the usual arid descriptions of sine, cosine, and their trigonometric relatives, h...(展开全部)

Hva er mensen? Hva er utflod? Må jeg bruke BH? Hva er det som skjer? Overgangen fra barn til ungdom er ikke enkel. Kroppen forandrer seg, hormonene tar kontrollen og i hjernen skjer det en slags ommøblering. Dette vet voksne, men for den som står midt i det, er det ikke like greit å skjønne oppned på tilværelsen. I Jenteboka tar legene Nina Brochmann og Ellen Støkken Dahl deg g...(展开全部)

The Ptolemaic system of the universe, with the earth at the centre, had held sway since antiquity as authoritative in philosophy, science, and church teaching. Following his observations of the heavenly bodies, Nicolaus Copernicus (1473-1543) abandoned the geocentric system for a heliocentric model, with the sun at the centre. His remarkable work, "On the Revolutions of Heavenl...(展开全部)

The Ptolemaic system of the universe, with the earth at the centre, had held sway since antiquity as authoritative in philosophy, science, and church teaching. Following his observations of the heavenly bodies, Nicolaus Copernicus (1473-1543) abandoned the geocentric system for a heliocentric model, with the sun at the centre. His remarkable work, "On the Revolutions of Heavenl...(展开全部)

This book is a history of the development of mathematical astronomy in China, from the late third century BCE, to the early 3rd century CE - a period often referred to as 'early imperial China'. It narrates the changes in ways of understanding the movements of the heavens and the heavenly bodies that took place during those four and a half centuries, and tells the stories of th...(展开全部)

This title challenges the belief that the 18th century was essentially modern in its temper. Carl Becker demonstrates that the period commonly described as the Age of Reason was, in fact, very far from that; that Voltaire, Hume, Diderot, and Locke were living in a medieval world, and that these philosophers "demolished the Heavenly City of St. Augustine only to rebuild it with ...(展开全部)

The origins of modern Daoism can be traced to the Church of the Heavenly Master (Tianshidao), reputedly established by the formidable Zhang Daoling. In 142 CE, according to Daoist tradition, Zhang was visited by the Lord on High, who named him his vicar on Earth with the title Heavenly Master. The dispensation articulated aneschatological vision of saving initiates—the pure, th...(展开全部)