Engineering Physics

Oxford mathematician and author John Lennox takes a closer look at Hawking's logic regarding what brought the universe into being. In lively, layman's terms, Lennox guides us through the key points in Hawking's arguments - with clear explanations of the latest scientific and philosophical methods and theories - and demonstrates that far from disproving a creator God, they make his existence seem all the more probable.

As we navigate through life we instinctively model time as having a flowing present that divides a fixed past from open future. This model develops in childhood and is deeply saturated within our language, thought, and behavior, affecting our conceptions of the universe, freedom, and the self. Yet as central as it is to our lives, physics seems to have no room for this flowing present. What Makes Time Special? demonstrates this claim in detail and then turns to two novel positive tasks.

What are we made up of? What holds material bodies together? Is there a difference between terrestrial matter and celestial matter? When Democritus stated that we are made up of atoms, few people believed him. Not until Galileo and Newton in the seventeenth century did people take the idea seriously, and it was another four hundred years before we could reconstruct the elementary components of matter.

What keeps objects from floating out of your hand? What if your feet drifted away from the ground? What stops everything from floating into space? Gravity. Author Jason Chin takes this complex subject and makes it brilliantly accessible to young listeners in this innovative book. His expansive but simple narrative does justice to the subject at hand, looking at the concept of gravity in a whole new way. From the redwoods to the oceans to a small island, he now takes us to outer space in this thoroughly researched, exceptional addition to his body of children's nonfiction.

Roberts' model, called quantum space theory, has been praised for how it offers an intuitively accessible picture of 11 dimensions and for powerfully extending the insight of general relativity, eloquently translating the four forces into unique kinds of geometric distortions while offering us access to the underlying deterministic dynamics that give rise to quantum mechanics. That remarkably simple picture explains the mysteries of modern physics in a way that's fully commensurate with Einstein's Intuition.

For going on two decades, Scientific American’s “Ask the Experts” column has been answering reader questions on all fields of science. We’ve taken your questions from the basic to the esoteric and reached out to top scientists, professors, and researchers to find out why the sky is blue or whether we really only use 10 percent of our brains. Now, we’ve combed through our archives and have compiled some of the most interesting questions (and answers) into a series of books.

Parents and parents-to-be are bombarded with information, from what to expect to what to do (and not to do) when it happens. But what they may not realize is that from the chemistry of pregnancy tests to the vacuum physics of breastfeeding, there is fascinating science at the heart of every aspect of creating and raising a new human.

What is time? What does it mean for time to pass? Is it possible to travel in time? What is the difference between the past and future? Until the work of Newton, these questions were purely topics of philosophical speculation. Since then we've learned a great deal about time, and its study has moved from a subject of philosophical reflection to instead became part of the subject matter of physics.

After the Apollo program put 12 men on the moon and safely brought them home, anything seemed possible. In this spirit, the team at NASA set about developing the space shuttle, arguably the most complex piece of machinery ever created.

Einstein’s revolutionary scientific ideas have transformed our world, ushering in the nuclear age. The current pace of scientific and technological progress is simply astounding. So is there any place for faith in such a world? Einstein himself gave careful thought to the deepest questions of life. His towering intellectual status means he is someone worth listening to when we think through the big questions of life.

Whether searching for extra-terrestrial life, managing the effects of space weather or learning about dark matter, the study astrophysics has profound implications for us all. NASA scientist and astronomer Sten Odenwald explains the key concepts of this vast topic, bringing clarity to some of the great mysteries of space.

What do apples, atoms, black holes, and time machines all have in common? They all follow the same rules, the laws of physics. Physics 101 is is a fast-paced, story-driven walkthrough of how we figured out the rules that govern reality. From ancient thinkers dropping guesses to modern geniuses dropping equations, this book tracks the wild, mind-bending history of motion, matter, energy, and everything in between.

Are you fascinated by the laws of nature, quantum physics, and its basic concepts that seem meaningless? Quantum mechanics is a field that attempts to understand the behavior of subatomic objects using mathematical notions. The book explains uncertainty and time dependence by further elaborating on the principles of quantum states. It also describes the entanglement of particle and wave states, thereby offering interested listeners the possibility of understanding physics at a slower tempo.

Când a descoperit legea gravitației, Newton a unificat regulile care guvernează cerurile și Pământul; de-atunci, fizicienii au tot așezat noi forțe în teorii tot mai cuprinzătoare. Însă provocarea supremă este realizarea unei sinteze monumentale a teoriei relativității și teoriei cuantice. Ar fi realizarea de căpătâi a științei, o fuziune profundă a tuturor forțelor naturii într-o singură ecuație minunată, care să descifreze cele mai profunde mistere ale științei: Ce s-a întâmplat înainte de Big Bang?

Have you ever wondered how bridges don’t fall down or how really old buildings stay standing up? Basic principles of architecture and engineering, including an introduction to bridges, locks, arches, columns, and skyscrapers, are explored in this newest engaging addition to the How Do series.

المادَّة هي المكوِّن الأساسي للكون. ونحن نعرف الذرَّة جيداً وأنها جُسيم شديد الصِّغر لدرجة أن شعرة الإنسان الرفيعة قد تتَّسع لمليون ذرَّة. إلا أن المادَّة بحرٌ أوسع من هذا بكثير، وفَـهْـم طبيعتها عملية دؤوبة لا تنتهي. يستكشف «جيف كوتريل» خبايا جميع أشكال المادَّة، بدايةً من أشكالها المألوفة مثل المواد الصلبة والسائلة والغازيَّـة، وحتى البلازما والأشكال غير المألوفة، مثل المادَّة الكميَّـة والمادَّة المضادَّة. يستعرض كوتريل كذلك نشأة المادَّة في الانفجار العظيم، فيتحدَّث عن تكوين الذرَّة والطاقة والكتلة والأشكال الغامضة للمـادَّة المظلمة والطاقة المظلمة، فيتضح لنا أننا ما زلنا لا نعلم الكثير عن المادَّة التي يتكوَّن منها عالمنا.

What happens when particles lose their individuality and merge into a single quantum being? This is the mystery of the Bose–Einstein condensate — a state of matter predicted by Einstein and Bose a century ago, first realized with ultracold atoms in the 1990s, and later extended to photons, exciton–polaritons, and other exotic systems. In this book, Boris Kriger guides the listener through the history of this extraordinary discovery — from a letter written in Calcutta to Einstein, to the Nobel-winning experiments that cooled atoms to the edge of absolute zero.

Science starts to get interesting when things don't make sense. Science's best-kept secret is that there are experimental results and reliable data that the most brilliant scientists can neither explain nor dismiss. If history is any precedent, we should look to today's inexplicable results to forecast the future of science. Michael Brooks heads to the scientific frontier to meet 13 modern-day anomalies and discover tomorrow's breakthroughs.

Does alien life exist? Is time travel possible? How did the universe begin, and how will it end? Is the future predetermined? These are just some of the fascinating questions posed in this book, which stretches across physics, the life sciences and cosmology. Each chapter considers a separate question and ends with either an answer or, if there is insufficient evidence, a ‘best guess’ answer.

El prestigioso físico teórico Michio Kaku expone en Supremacía cuántica todas las promesas y los escollos que pueden surgir a partir del uso del ordenador cuántico, del que se espera que permita desvelar algunos de los mayores misterios de nuestro universo y resolver muchos de nuestros principales problemas.