Nature’s Clocks

Author: J. D. Macdougall
Publisher: Univ of California Press
ISBN: 0520261615
Category : Nature
Languages : en
Pages : 284

Book Description
"A lucid and engaging account of the scientific revolution that changed the way we think about our planet and ourselves."—James Lawrence Powell, author of Grand Canyon and Mysteries of Terra Firma

Nature's Clocks

Author: Doug Macdougall
Publisher: Univ of California Press
ISBN: 0520933443
Category : Science
Languages : en
Pages : 285

Book Description
"Radioactivity is like a clock that never needs adjusting," writes Doug Macdougall. "It would be hard to design a more reliable timekeeper." In Nature's Clocks, Macdougall tells how scientists who were seeking to understand the past arrived at the ingenious techniques they now use to determine the age of objects and organisms. By examining radiocarbon (C-14) dating—the best known of these methods—and several other techniques that geologists use to decode the distant past, Macdougall unwraps the last century's advances, explaining how they reveal the age of our fossil ancestors such as "Lucy," the timing of the dinosaurs' extinction, and the precise ages of tiny mineral grains that date from the beginning of the earth's history. In lively and accessible prose, he describes how the science of geochronology has developed and flourished. Relating these advances through the stories of the scientists themselves—James Hutton, William Smith, Arthur Holmes, Ernest Rutherford, Willard Libby, and Clair Patterson—Macdougall shows how they used ingenuity and inspiration to construct one of modern science's most significant accomplishments: a timescale for the earth's evolution and human prehistory.

From Sundials to Atomic Clocks

Author: James Jespersen
Publisher: Courier Corporation
ISBN: 0486409139
Category : Science
Languages : en
Pages : 322

Book Description
Clear and accessible introduction to the concept of time examines measurement, historic timekeeping methods, uses of time information, role of time in science and technology, and much more. Over 300 illustrations.

Clocks and More Clocks

Author: Pat Hutchins
Publisher: Simon and Schuster
ISBN: 1481410725
Category : Juvenile Fiction
Languages : en
Pages : 32

Book Description
When the hall clock reads twenty minutes past four, the attic clock reads twenty-three minutes past four, the kitchen clock reads twenty-five minutes past four, and the bedroom clock reads twenty-six minutes past four, what should Mr. Higgins do? He can't tell which of his clocks tells the right time. He is in for a real surprise when the Clockmaker shows him that they are all correct!

It's About Time (eBook)

Author: Robynne Eagan
Publisher: Lorenz Educational Press
ISBN: 0787784400
Category :
Languages : en
Pages : 148

Book Description
Help children measure and tell time by the sun, the clock and the calendar; and learn why there are 24 hours in a day, 7 days in a week and 365 days in a year. Here's a cross-curriculum approach to time with learning activities that bring together history, science, language arts and math. A comprehensive look at time from the ancient civilizations who first tried to understand, arrange and measure it - to modern society where we organize our lives around the clock!

The Nature Instinct

Author: Tristan Gooley
Publisher: The Experiment
ISBN: 1615195912
Category : Nature
Languages : en
Pages : 384

Book Description
From the New York Times-bestselling author of The Secret World of Weather and The Lost Art of Reading Nature’s Signs, learn to notice nature’s hidden clues all around you “A captivating guide to finding one’s way in the wild.”—The Wall Street Journal Publisher's note: The Nature Instinct was published in the UK under the title Wild Signs and Star Paths. Master outdoorsman Tristan Gooley was just about to make camp when he sensed danger—but couldn’t say why. After sheltering elsewhere, Gooley returned to investigate: What had set off his subconscious alarm? Suddenly, he understood: All of the tree trunks were slightly bent. The ground had already shifted once and could easily become treacherous in a storm. The Nature Instinct shows how we, too, can unlock this intuitive understanding of our surroundings. Learn to sense the forest’s edge from deep in the woods, or whether a wild animal might pose danger—before you even know how you know.

Astronomy Methods

Author: Hale Bradt
Publisher: Cambridge University Press
ISBN: 9780521535519
Category : Science
Languages : en
Pages : 462

Book Description
Astronomy Methods is an introduction to the basic practical tools, methods and phenomena that underlie quantitative astronomy. Taking a technical approach, the author covers a rich diversity of topics across all branches of astronomy, from radio to gamma-ray wavelengths. Topics include the quantitative aspects of the electromagnetic spectrum, atmospheric and interstellar absorption, telescopes in all wavebands, interferometry, adaptive optics, the transport of radiation through matter to form spectral lines, and neutrino and gravitational-wave astronomy. Clear, systematic presentations of the topics are accompanied by diagrams and problem sets. Written for undergraduates and graduate students, this book contains a wealth of information that is required for the practice and study of quantitative and analytical astronomy and astrophysics.

How to Build 35 Great Clocks

Author: Joseph Daniele
Publisher: Stackpole Books
ISBN: 9780811722322
Category : Art
Languages : en
Pages : 198

Book Description
Includes the four basic types of clocks---plaque, shelf, wall, and tall case clocks. Plans, drawings, and photos included.

Natural Variation and Clocks

Author:
Publisher: Academic Press
ISBN: 0128118121
Category : Science
Languages : en
Pages : 108

Book Description
Natural Variances and Clocks, Volume 99 in the Advances in Genetics series provides the latest information on the rapidly evolving field of genetics, presenting new medical breakthroughs and advances. This updated release includes chapters on a variety of new research, including the Natural variation of the circadian clock in Neurospora, Natural variation and genetics of the photoperiodic timer in the pitcher-plant mosquito, Natural variation in human clocks, and Natural variation in the circadian clock genes in Drosophila and other insects. This series continually publishes important reviews that are ideal for geneticists and their colleagues in affiliated disciplines, critically analyzing future directions. - Critically analyzes future directions for the study of clinical genetics - Written and edited by recognized leaders in the field - Presents new medical breakthroughs that are occurring as a result of advances in our knowledge of genetics

Frequency Standards

Author: Fritz Riehle
Publisher: John Wiley & Sons
ISBN: 3527605959
Category : Science
Languages : en
Pages : 540

Book Description
Of all measurement units, frequency is the one that may be determined with the highest degree of accuracy. It equally allows precise measurements of other physical and technical quantities, whenever they can be measured in terms of frequency. This volume covers the central methods and techniques relevant for frequency standards developed in physics, electronics, quantum electronics, and statistics. After a review of the basic principles, the book looks at the realisation of commonly used components. It then continues with the description and characterisation of important frequency standards from atomic clocks, to frequency stabilised lasers. The whole is rounded of with a discussion of topical applications in engineering, telecommunications, and metrology.