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The Lazy Universe

2017-04-28 Science
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Release : 2017-04-28
Genre : Science
Kind : eBook
Book Rating : 720/5 ( reviews)

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Book Synopsis The Lazy Universe by : Jennifer Coopersmith

Download or read book The Lazy Universe written by Jennifer Coopersmith. This book was released on 2017-04-28. Available in PDF, EPUB and Kindle. Book excerpt: This is a rare book on a rare topic: it is about 'action' and the Principle of Least Action. A surprisingly well-kept secret, these ideas are at the heart of physical science and engineering. Physics is well known as being concerned with grand conservatory principles (e.g. the conservation of energy) but equally important is the optimization principle (such as getting somewhere in the shortest time or with the least resistance). The book explains: why an optimization principle underlies physics, what action is, what `the Hamiltonian' is, and how new insights into energy, space, and time arise. It assumes some background in the physical sciences, at the level of undergraduate science, but it is not a textbook. The requisite derivations and worked examples are given but may be skim-read if desired. The author draws from Cornelius Lanczos's book "The Variational Principles of Mechanics" (1949 and 1970). Lanczos was a brilliant mathematician and educator, but his book was for a postgraduate audience. The present book is no mere copy with the difficult bits left out - it is original, and a popularization. It aims to explain ideas rather than achieve technical competence, and to show how Least Action leads into the whole of physics.

The Lazy Universe

2017-05-04 Science
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Release : 2017-05-04
Genre : Science
Kind : eBook
Book Rating : 739/5 ( reviews)

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Book Synopsis The Lazy Universe by : Jennifer Coopersmith

Download or read book The Lazy Universe written by Jennifer Coopersmith. This book was released on 2017-05-04. Available in PDF, EPUB and Kindle. Book excerpt: This is a rare book on a rare topic: it is about 'action' and the Principle of Least Action. A surprisingly well-kept secret, these ideas are at the heart of physical science and engineering. Physics is well known as being concerned with grand conservatory principles (e.g. the conservation of energy) but equally important is the optimization principle (such as getting somewhere in the shortest time or with the least resistance). The book explains: why an optimization principle underlies physics, what action is, what `the Hamiltonian' is, and how new insights into energy, space, and time arise. It assumes some background in the physical sciences, at the level of undergraduate science, but it is not a textbook. The requisite derivations and worked examples are given but may be skim-read if desired. The author draws from Cornelius Lanczos's book "The Variational Principles of Mechanics" (1949 and 1970). Lanczos was a brilliant mathematician and educator, but his book was for a postgraduate audience. The present book is no mere copy with the difficult bits left out - it is original, and a popularization. It aims to explain ideas rather than achieve technical competence, and to show how Least Action leads into the whole of physics.

Energy, the Subtle Concept

2015 Science
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Author :
Release : 2015
Genre : Science
Kind : eBook
Book Rating : 745/5 ( reviews)

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Book Synopsis Energy, the Subtle Concept by : Jennifer Coopersmith

Download or read book Energy, the Subtle Concept written by Jennifer Coopersmith. This book was released on 2015. Available in PDF, EPUB and Kindle. Book excerpt: Energy is at the heart of physics and of huge importance to society and yet no book exists specifically to explain it, and in simple terms. In tracking the history of energy, this book is filled with the thrill of the chase, the mystery of smoke and mirrors, and presents a fascinating human-interest story. Moreover, following the history provides a crucial aid to understanding: this book explains the intellectual revolutions required to comprehend energy, revolutions as profound as those stemming from Relativity and Quantum Theory. Texts by Descartes, Leibniz, Bernoulli, d'Alembert, Lagrange, Hamilton, Boltzmann, Clausius, Carnot and others are made accessible, and the engines of Watt and Joule are explained. Many fascinating questions are covered, including: - Why just kinetic and potential energies - is one more fundamental than the other? - What are heat, temperature and action? - What is the Hamiltonian? - What have engines to do with physics? - Why did the steam-engine evolve only in England? - Why S=klogW works and why temperature is IT. Using only a minimum of mathematics, this book explains the emergence of the modern concept of energy, in all its forms: Hamilton's mechanics and how it shaped twentieth-century physics, and the meaning of kinetic energy, potential energy, temperature, action, and entropy. It is as much an explanation of fundamental physics as a history of the fascinating discoveries that lie behind our knowledge today.

A Universe from Nothing

2012-01-10 Science
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Release : 2012-01-10
Genre : Science
Kind : eBook
Book Rating : 476/5 ( reviews)

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Book Synopsis A Universe from Nothing by : Lawrence M. Krauss

Download or read book A Universe from Nothing written by Lawrence M. Krauss. This book was released on 2012-01-10. Available in PDF, EPUB and Kindle. Book excerpt: Bestselling author and acclaimed physicist Lawrence Krauss offers a paradigm-shifting view of how everything that exists came to be in the first place. “Where did the universe come from? What was there before it? What will the future bring? And finally, why is there something rather than nothing?” One of the few prominent scientists today to have crossed the chasm between science and popular culture, Krauss describes the staggeringly beautiful experimental observations and mind-bending new theories that demonstrate not only can something arise from nothing, something will always arise from nothing. With a new preface about the significance of the discovery of the Higgs particle, A Universe from Nothing uses Krauss’s characteristic wry humor and wonderfully clear explanations to take us back to the beginning of the beginning, presenting the most recent evidence for how our universe evolved—and the implications for how it’s going to end. Provocative, challenging, and delightfully readable, this is a game-changing look at the most basic underpinning of existence and a powerful antidote to outmoded philosophical, religious, and scientific thinking.

The Universe in Bite-sized Chunks

2018-03-22 Science
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Release : 2018-03-22
Genre : Science
Kind : eBook
Book Rating : 661/5 ( reviews)

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Book Synopsis The Universe in Bite-sized Chunks by : Colin Stuart

Download or read book The Universe in Bite-sized Chunks written by Colin Stuart. This book was released on 2018-03-22. Available in PDF, EPUB and Kindle. Book excerpt: The whole cosmos in your hands, The Universe in Bite-sized Chunks is your one-stop guide to everything you ever wanted to know about space and our place in it.

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