Mark Denny – författare

How do meteorologists design forecasts for the next day's, the next week's, or the next month's weather? Are some forecasts more likely to be accurate than others, and why? Making Sense of Weather and Climate takes readers through key topics in atmospheric physics and presents a cogent view of how weather relates to climate, particularly climate-change science. It is the perfect book for amateur meteorologists and weather enthusiasts, and for anyone whose livelihood depends on navigating the weather's twists and turns. Making Sense of Weather and Climate begins by explaining the essential mechanics and characteristics of this fascinating science. The noted physics author Mark Denny also defines the crucial differences between weather and climate, and then develops from this basic knowledge a sophisticated yet clear portrait of their relation. Throughout, Denny elaborates on the role of weather forecasting in guiding politics and other aspects of human civilization. He also follows forecasting's effect on the economy.Denny's exploration of the science and history of a phenomenon we have long tried to master makes this book a unique companion for anyone who wants a complete picture of the environment's individual, societal, and planetary impact.

The alarm calls of birds make them difficult for predators to locate, while the howl of wolves and the croak of bullfrogs are designed to carry across long distances. From an engineer's perspective, how do such specialized adaptations among living things really work? And how does physics constrain evolution, channeling it in particular directions?Writing with wit and a richly informed sense of wonder, Denny and McFadzean offer an expert look at animals as works of engineering, each exquisitely adapted to a specific manner of survival, whether that means spinning webs or flying across continents or hunting in the dark-or writing books. This particular book, containing more than a hundred illustrations, conveys clearly, for engineers and nonengineers alike, the physical principles underlying animal structure and behavior.Pigeons, for instance-when understood as marvels of engineering-are flying remote sensors: they have wideband acoustical receivers, hi-res optics, magnetic sensing, and celestial navigation. Albatrosses expend little energy while traveling across vast southern oceans, by exploiting a technique known to glider pilots as dynamic soaring. Among insects, one species of fly can locate the source of a sound precisely, even though the fly itself is much smaller than the wavelength of the sound it hears. And that big-brained, upright Great Ape? Evolution has equipped us to figure out an important fact about the natural world: that there is more to life than engineering, but no life at all without it.

Addressing general readers and biologists, Mark Denny shows how the physics of fluids (in this case, air and water) influences the often fantastic ways in which life forms adapt themselves to their terrestrial or aquatic "media."

Life is a chancy proposition: from the movement of molecules to the age at which we die, chance plays a key role in the natural world. Traditionally, biologists have viewed the inevitable "noise" of life as an unfortunate complication. The authors of this book, however, treat random processes as a benefit. In this introduction to chance in biology, Mark Denny and Steven Gaines help readers to apply the probability theory needed to make sense of chance events--using examples from ocean waves to spiderwebs, in fields ranging from molecular mechanics to evolution. Through the application of probability theory, Denny and Gaines make predictions about how plants and animals work in a stochastic universe. Is it possible to pack a variety of ion channels into a cell membrane and have each operate at near-peak flow? Why are our arteries rubbery? The concept of a random walk provides the necessary insight. Is there an absolute upper limit to human life span? Could the sound of a cocktail party burst your eardrums? The statistics of extremes allows us to make the appropriate calculations. How long must you wait to see the detail in a moonlit landscape?Can you hear the noise of individual molecules? The authors provide answers to these and many other questions. After an introduction to the basic statistical methods to be used in this book, the authors emphasize the application of probability theory to biology rather than the details of the theory itself. Readers with an introductory background in calculus will be able to follow the reasoning, and sets of problems, together with their solutions, are offered to reinforce concepts. The use of real-world examples, numerous illustrations, and chapter summaries--all presented with clarity and wit--make for a highly accessible text. By relating the theory of probability to the understanding of form and function in living things, the authors seek to pique the reader's curiosity about statistics and provide a new perspective on the role of chance in biology.

The world's oceans account for roughly 71 percent of the planet's surface and 99 percent of its livable volume. Any study of this huge habitat requires a solid foundation in the principles that underlie marine biology and physical and chemical oceanography, yet until now undergraduate textbooks have largely presented compilations of facts rather than explanations of principles. How the Ocean Works fills this gap, providing a concise and accessible college-level introduction to marine science that is also ideal for general readers. How are winds and currents driven? What is the dilemma of the two-layered ocean? Mark Denny explains key concepts like these in rich and fascinating detail. He explores early scientific knowledge of oceans, photosynthesis, trophic interactions and energy flow, and the impacts of human activities on marine and atmospheric systems. Focusing each chapter on a major topic and carefully explaining the principles and theory involved, Denny gives readers the conceptual building blocks needed to develop a coherent picture of the living ocean.How the Ocean Works is an indispensable resource that teaches readers how to think about the ocean--its biology, mechanics, and conservation. * Provides a concise, up-to-date introduction to marine science * Develops the conceptual basis needed to understand how the ocean works * Explains fundamental principles and theory * Includes color illustrations and informative diagrams * Serves as a college textbook and a reference for general readers

Plants and animals interact with each other and their surroundings, and these interactions--with all their complexity and contingency--control where species can survive and reproduce. In this comprehensive and groundbreaking introduction to the emerging field of ecological mechanics, Mark Denny explains how the principles of physics and engineering can be used to understand the intricacies of these remarkable relationships. Denny opens with a brief review of basic physics before introducing the fundamentals of diffusion, fluid mechanics, solid mechanics, and heat transfer, taking care to explain each in the context of living organisms. Why are corals of different shapes on different parts of a reef? How can geckos climb sheer walls? Why can birds and fish migrate farther than mammals? How do desert plants stay cool? The answers to these and a host of similar questions illustrate the principles of heat, mass, and momentum transport and set the stage for the book's central topic--the application of these principles in ecology. Denny shows how variations in the environment--in both space and time--affect the performance of plants and animals.He introduces spectral analysis, a mathematical tool for quantifying the patterns in which environments vary, and uses it to analyze such subjects as the spread of invasive species. Synthesizing the book's materials, the final chapters use ecological mechanics to predict the occurrence and consequences of extreme ecological events, explain the emergence of patterns in the distribution and abundance of organisms, and empower readers to explore further. Ecological Mechanics offers new insights into the physical workings of organisms and their environment.

This text introduces and draws together pertinent aspects of fluid dynamics, physical oceanography, solid mechanics, and organismal biology to provide a much-needed set of tools for quantitatively examining the biological effects of ocean waves. "Nowhere on earth does water move as violently as on wave-swept coasts," writes the author, "and every breaker that comes pounding on the shore places large hydrodynamic forces on the organisms resident there." Yet wave-swept coral reefs and rocky shores are home to some of the world's most diverse assemblages of plants and animals, and scientists have chosen these environments to carry out much of the recent experimental work in community structure and population dynamics. Until now these studies have been hampered because biologists often lack a working understanding of the mechanics of the wave-swept shore. Mark Denny here supplies that understanding in clear and vivid language.Included are an introduction to wave-induced water motions and the standard theories for describing them, a broad introduction to the hydrodynamic forces these water movements place on plants and animals, and an explanation of how organisms respond to these forces. These tools are put to use in the final chapters in an examination of the mechanisms of "wave exposure" and an exploration of the mechanical determinants of size and shape in wave-swept environments. Originally published in 1988. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

This text introduces and draws together pertinent aspects of fluid dynamics, physical oceanography, solid mechanics, and organismal biology to provide a much-needed set of tools for quantitatively examining the biological effects of ocean waves. "Nowhere on earth does water move as violently as on wave-swept coasts," writes the author, "and every breaker that comes pounding on the shore places large hydrodynamic forces on the organisms resident there." Yet wave-swept coral reefs and rocky shores are home to some of the world's most diverse assemblages of plants and animals, and scientists have chosen these environments to carry out much of the recent experimental work in community structure and population dynamics. Until now these studies have been hampered because biologists often lack a working understanding of the mechanics of the wave-swept shore. Mark Denny here supplies that understanding in clear and vivid language.Included are an introduction to wave-induced water motions and the standard theories for describing them, a broad introduction to the hydrodynamic forces these water movements place on plants and animals, and an explanation of how organisms respond to these forces. These tools are put to use in the final chapters in an examination of the mechanisms of "wave exposure" and an exploration of the mechanical determinants of size and shape in wave-swept environments. Originally published in 1988. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Ingenium is medieval English vernacular for "an ingenious contrivance." In this fascinating book, physicist Mark Denny considers five such contrivances-the bow and arrow, the waterwheel, the counterpoise siege engine (including the trebuchet), the pendulum clock anchor escapement, and the centrifugal governor-and demonstrates how they literally changed the world. Interweaving an entertaining narrative with diagrams, equations, and drawings, Denny shares the history of each device, explains the physics behind it, and describes how it was used, how it evolved, and why it is significant in today's world. Consider the bow and arrow, which transformed warfare by allowing soldiers to attack their enemies at a safe distance. Or the waterwheel, which enabled Old World civilizations to grind grain, pump water, and power machines during a period of extreme labor shortages. Medieval warriors engaged in an early form of biological warfare by using the trebuchet to launch dead animals or plague-ridden corpses over enormous fortress walls.The pendulum clock forever enslaved modern humans to the clock by linking the accurate measure of time to the burdens of schedules, deadlines, promptness, and tardiness. And the centrifugal governor gave rise to an entire branch of modern engineering science: feedback control. Reflecting on the inventors of these ancient machines and the times in which they lived, Denny concludes with thought-provoking observations about inventors, inventiveness, genius, and innovation. Whether you dream of making a better mousetrap or launching pumpkins into the stratosphere, Ingenium will tickle your fancy.

The science of ballistics has a long history and starts with one question: How does a projectile move through the air? Even before physicists worked that one out, military engineers had been tinkering with ballistic devices for centuries. The trebuchet of the Middle Ages has given way to rocket power, and the science of ballistics has evolved to match the technology. Mark Denny's survey covers this dynamic subject from prehistory to the weapons of tomorrow. Taking the bang-whiz-thud approach, Denny first talks about internal ballistics-Bang!-from before gunpowder to the development of modern firearms. External ballistics-Whiz!-are next, with discussions about short- and long-range trajectories. Denny's lesson ends with a Thud!-an explanation of terminal ballistics. Throughout, Denny conveys applicable physics principles in a way that will appeal to technology buffs and ballistics enthusiasts alike. His fun and factual explanations are free of complicated equations; notes cover the key aspects of ballistics physics for the more technically inclined. Denny has perfected this engaging balance of science and story.For study or hobby, Their Arrows Will Darken the Sun is an entertaining guide to the world of ballistics.

Long Hops explains the science of bird migration in accessible language—from the aeronautics of bird flight to the newly unraveled mysteries of their magnetic compasses. The author provides a sideways look, from the perspective of an experienced physicist, at the amazing long-distance migration journeys of many bird species. Birds are breathtaking works of engineering as well as beautiful creatures possessed of spectacular capabilities. Consider what it takes for a bird to navigate from Alaska to Hawai‘i, as thousands of birds do every fall.They fly 2,500 miles nonstop and land on a small island in the middle of a vast ocean. How do they endure such marathon journeys, and how on earth do they know which direction to travel over featureless ocean? These migrants head straight for their island of choice from the get-go (they don’t just fly south and hope to bump into an island chain). Now consider this: many of the migration journeys described in this book, in all parts of the world and performed by birds as small as warblers and as large as swans, cover much longer distances.The mysteries of migration are being revealed to us via recent research aided by technology—this book makes an important contribution to explaining these developments, with original observations and transparent explanations of one of nature’s most fascinating phenomena.

Power generation is a relatively recent concern because humans had little need for sustained power until the dawn of the Industrial Revolution. Today, modern civilization is wholly dependent on the production and distribution of power. Without it, our way of life would be extinguished. In Lights On!, Mark Denny reveals the mysterious world of power generation. He takes us on a fun tour, examining the nature of energy, tracing the history of power generation, explaining the processes from production through transmission to use, and addressing questions that are currently in the headlines, such as: Is natural gas the best alternative energy source in the near term?; Could solar power be the answer to all our problems?; and Why is nuclear power such a hard sell, and are the concerns valid? Devoting individual chapters to each of the forms of power in use today-electrical, coal, oil and natural gas, hydro, nuclear, and solar-Denny explains the pros and cons of each, their availability worldwide, and which are in dwindling supply.Making clear that his approach is that of "a scientist and engineer, not a politician or businessman," Denny addresses environmental concerns by providing information to help readers understand the science and engineering of power generation so they can discuss contemporary energy issues from an informed perspective. For those who wish to delve deeper into the science, a technical appendix provides estimations for a variety of power generators. Anyone who is interested in how energy works and how it is transformed to power our lives will get a charge out of Lights On!

Ever since Nobel Prize-winning atmospheric chemist Paul Crutzen coined the term "Anthropocene" to describe our current era-one in which human impact on the environment has pushed Earth into an entirely new geological epoch-arguments for and against the new designation have been raging. Finally, an official working group of scientists was created to determine once and for all whether we humans have tossed one too many plastic bottles out the car window and wrought a change so profound as to be on par with the end of the last ice age. In summer 2016, the answer came back: Yes. In Making the Most of the Anthropocene, scientist Mark Denny tackles this hard truth head-on and considers burning questions: How did we reach our present technological and ecological state? How are we going to cope with our uncertain future? Will we come out of this, or are we doomed as a species? Is there anything we can do about what happens next?This book * explains what the Anthropocene is and why it is important* offers suggestions for minimizing harm instead of fretting about an impending environmental apocalypse * combines easy-to-grasp scientific, technological, economic, and anthropological analyses In Making the Most of the Anthopocene, there are no equations, no graphs, and no impenetrable jargon. Instead, you'll find a fascinating cast of characters, including journalists from outer space, peppered moths, and unjustly maligned Polynesians. In his bright, lively voice, Denny envisions a future that balances reaction and reason, one in which humanity emerges bloody but unbowed-and in which those of us who are prepared can make the most of the Anthropocene.

This is a book about rocket science: what it is and what it does. Neither a pure textbook nor a populist space travel tome, the book will educate, inform and above all entertain anyone intrigued by rocket science.

Using a unique blend of physics and history, this book explores the dynamics of ancient weapons within a historical context. The factors that influenced the development and usefulness of ancient weapons are manifold, from the materials available at the time and the technology needed to assemble them, to conditions in which they were used and their capabilities relative to other available weaponry. This book takes the main categories of ancient weapons – bows, boomerangs, spears, slings, and siege engines – and presents a detailed analysis of their history and development, answering questions about the physics, materials science, and engineering behind them, as well as their uses in hunting and warfare, and capabilities and drawbacks. This book is suitable for a general audience, with mathematical details included as appendices for readers who want to go deeper into the science. History enthusiasts will find many fascinating details which are not available elsewhere, whereas an archaeologist presented with an ancient sling or ballista will be able to estimate its performance. Physics and engineering teachers will find ideas for enrichment activities on mechanics and aerodynamics.

Have you ever wondered how stealth planes achieve "invisibility," how sunken ships are found, or how fishermen track schools of fish in vast expanses of ocean? Radar and sonar echolocation-a simple matter of sending, receiving, and processing signals. Weaving history with simple science, Mark Denny deftly reveals the world of radar and sonar to the curious reader, technology buff, and expert alike. He begins with an early history of the Chain Home radar system used during World War II and then provides accessible and engaging explanations of the physics that make signal processing possible. Basic diagrams and formulas show how electromagnetic and sound waves are transmitted, received, and converted into images, allowing you to literally see in the dark. A section on bioacoustic echolocation, with a focus on the superior sonar systems of bats and whales and a discussion of the advanced technology of next-generation airborne signal processors, opens the imagination to fascinating possibilities for the future.

An estimated 4.1 million people in the United States participate in recreational sailing. Yet the large library of sailing literature leaves many of them high and dry. On one side are technical guides for America's Cup boat-builders; on the other, simplistic books for weekend sailors with little interest in science. In Float Your Boat! professional and amateur boaters alike will find intelligent and understandable answers to such questions as: What were the key innovations that made sailboats more efficient? How do you increase the speed of a boat? How do sailboats travel into the wind? Why are so many explanations of sailing so wrong? Sailing enthusiast and physicist Mark Denny first traces the evolution of the sailing craft, from prehistoric coracles made of animal skins and antlers to the sailboat's reinvention as a pleasure craft during the Industrial Revolution. He then identifies specific sailing phenomena-how wind drives modern Bermuda sloops, how torque determines stability, why hull speed exists-and provides the key physics principles behind them.Whether you are an inquisitive landlubber who has never set foot in a boat, a casual weekend sailor, or an old salt who lives for the sea, Float Your Boat! is an accessible guide to the physics of sailing.

Ever wonder where the bubbles in your beer came from, which way they are going, and why? Have you considered the physical differences among ales, lambics, and lagers? Do you contemplate your pint? Accomplished homebrewer and physicist Mark Denny has crafted a scientifically sound and witty investigation of the physics and chemistry of beer. He recounts and explains the history of and key technological advances in brewing, provides basic instructions for making your own-including a scientific-yet-accessible account of the changes in appearance during each stage of the process-and looks at the fascinating physical phenomena contained within a pint of beer. Along the way he defines the main concepts and terms involved in the process and shows how you can subject the technical aspects of brewing to scientific analysis. If you've ever been curious about how beer is made, why it froths so well, and what makes different types...well...different, then Froth! is for you.

Ever wonder how a graceful and slender bridge can support enormous loads over truly astonishing spans? Why domes and free-standing arches survive earthquakes that flatten the rest of a city? Physicist Mark Denny looks at the large structures around us-tall buildings, long bridges, and big dams-and explains how they were designed and built and why they sometimes collapse, topple, or burst. Denny uses clear, accessible language to explain the physics behind such iconic structures as the Parthenon, the Eiffel Tower, the Forth Rail Bridge in Edinburgh, and Hoover Dam. His friendly approach allows readers to appreciate the core principles that keep these engineering marvels upright without having to master complex mathematical equations. Employing history, humor, and simple physics to consider such topics as when to use screws or nails, what trusses are, why iron beams are often I-shaped, and why medieval cathedrals have buttresses, Denny succeeds once again in making physics fun.

The science of ballistics has a long history and starts with one question: How does a projectile move through the air? Even before physicists worked that one out, military engineers had been tinkering with ballistic devices for centuries. The trebuchet of the Middle Ages has given way to rocket power, and the science of ballistics has evolved to match the technology. Mark Denny's survey covers this dynamic subject from prehistory to the weapons of tomorrow. Taking the bang-whiz-thud approach, Denny first talks about internal ballistics-Bang!-from before gunpowder to the development of modern firearms. External ballistics-Whiz!-are next, with discussions about short- and long-range trajectories. Denny's lesson ends with a Thud!-an explanation of terminal ballistics. Throughout, Denny conveys applicable physics principles in a way that will appeal to technology buffs and ballistics enthusiasts alike. His fun and factual explanations are free of complicated equations; notes cover the key aspects of ballistics physics for the more technically inclined. Denny has perfected this engaging balance of science and story.For study or hobby, Their Arrows Will Darken the Sun is an entertaining guide to the world of ballistics.

As anyone from cold climates knows, living with lots of ice and snow can lead to a special appreciation of sports such as skiing, sledding, and skating. Prolific physics popularizer Mark Denny's take on winter athletics lays out the physical principles that govern glaciated game play. After discussing the physical properties of ice and snow and describing the physics behind sliding friction and aerodynamic drag, Denny applies these concepts to such sports as bobsledding, snowboarding, and curling. He explains why clap skates would only hinder hockey players, how a curling rock curls, the forces that control luge speed, and how steering differs from skiing to snowboarding. With characteristic accuracy and a touch of wit, Denny provides fans, competitors, and coaches with handy, applicable insights into the games they love. The separate section of technical notes offers an original and mathematically rigorous exploration of the key aspects of winter sports physics. A physics-driven exploration of sports played on ice and snow that is truly fun and informative, Gliding for Gold is the perfect primer for understanding the science behind cold weather athletics.

As anyone from cold climates knows, living with lots of ice and snow can lead to a special appreciation of sports such as skiing, sledding, and skating. Prolific physics popularizer Mark Denny's take on winter athletics lays out the physical principles that govern glaciated game play. After discussing the physical properties of ice and snow and describing the physics behind sliding friction and aerodynamic drag, Denny applies these concepts to such sports as bobsledding, snowboarding, and curling. He explains why clap skates would only hinder hockey players, how a curling rock curls, the forces that control luge speed, and how steering differs from skiing to snowboarding. With characteristic accuracy and a touch of wit, Denny provides fans, competitors, and coaches with handy, applicable insights into the games they love. The separate section of technical notes offers an original and mathematically rigorous exploration of the key aspects of winter sports physics. A physics-driven exploration of sports played on ice and snow that is truly fun and informative, Gliding for Gold is the perfect primer for understanding the science behind cold weather athletics.

In today's world of online maps and travel directions delivered wirelessly to hand - held devices, getting from place to place requires little thought from most of us - which is a good thing, since accurate navigation can be tricky. Get your bearings with Mark Denny - an expert at explaining scientific concepts in non-technical language - in this all - encompassing look at the history and science of navigation. Denny's tour kicks off with key facts about the earth and how its physical properties affect travel. He discusses cartography and early mapmakers, revealing fascinating tidbits such as how changes over time of the direction of true north, as well as of magnetic north, impacted navigation. Denny details the evolution of navigation from the days of coastal piloting to GPS and other modern-day technologies. He explains the scientific breakthroughs in accessible, amusing terms and provides an insightful look at their effects on societies, cultures, and human advancement.Throughout, Denny frames the long history of navigation with amazing tales of such people as Pytheas, an ancient Greek navigator, and Sir Francis Drake and of such discoveries as the magnetic compass and radio direction finding. Whether you have an interest in orienteering and geocaching or want to know more about the critical role navigation has played in human survival and progress since ancient people learned to use lodestones, "The Science of Navigation" is for you. With it you'll finally understand the why of wayfinding.