Showing titles in Physics

All the matter and light we can see in the universe makes up a trivial five per cent of everything. The rest is hidden. This could be the biggest puzzle that science has ever faced. Since the 1970s, astronomers have been aware that galaxies have far too little matter in them to account for the way they spin around: they should fly apart, but something concealed holds them together. That ’something' is dark matter - invisible material in five times the quantity of the familiar stuff of stars and planets.

Quantum physics is an astounding (and mind-boggling) field of science, but can you actually use it to change your life? Absolutely yes, says Dr. Quantum. On A User's Guide to Your Universe, Dr. Quantum, who goes by day as mild-mannered physicist Dr. Fred Alan Wolf, teaches that anyone can understand quantum physics. What's more, it is the most useful, immediate, and relevant kind of science you can learn to profoundly affect your day-to-day life.

In this deeply original book, science writer Anil Ananthaswamy sets out in search of the telescopes and detectors that promise to answer the biggest questions in modern cosmology. Why is the universe expanding at an ever faster rate? What is the nature of the "dark matter" that makes up almost a quarter of the universe? Why does the universe appear fine-tuned for life? Are there others besides our own?

This is the dramatic and inspirational first-person story of theoretical physicist Dr. Ronald Mallett, who recently discovered the basic equations for a working time machine that he believes can be used as a transport vehicle to the past. Combining elements of Rocket Boys and Elegant Universe, Time Traveler follows Mallett's discovery of Einstein's work on space-time, his study of Godel's work on a solution of Einstein's equation that might allow for time travel.

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.

The National Aeronautics and Space Administration - NASA - was established on July 29, 1958. Ever since that day, NASA has been at the forefront of efforts to explore outer space, resulting in the Apollo missions to the moon, the Skylab space-station, and today's space shuttle. But behind the open face of NASA, there is a much more mysterious world. NASA has been linked to a wealth of high-level cover-ups.

Long before space travel was possible, the idea of life beyond Earth transfixed humans. In this fascinating book, astronomer Jon Willis explores the science of astrobiology and the possibility of locating other life in our own galaxy. Describing the most recent discoveries by space exploration missions, including the Kepler space telescope, the Mars Curiosity rover, and the New Horizons probe, Willis asks listeners to imagine - and choose among-five scenarios for finding life.

With wonder, wit, and flair - and in record time and space - geophysicist David Bercovici explains how everything came to be everywhere, from the creation of stars and galaxies to the formation of Earth's atmosphere and oceans to the origin of life and human civilization. Bercovici marries humor and legitimate scientific intrigue, rocketing listeners across nearly 14 billion years and making connections between the essential theories that give us our current understanding of topics as varied as particle physics, plate tectonics, and photosynthesis.

In The Allure of the Multiverse, physicist Paul Halpern tells the epic story of how science became besotted with the multiverse, and the controversies that ensued. The questions that brought scientists to this point are big and deep: Is reality such that anything can happen, must happen? How does quantum mechanics "choose" the outcomes of its apparently random processes? And why is the universe habitable? Each question quickly leads to the multiverse.

Science may be known for banishing the demons of superstition from the modern world. Yet just as the demon-haunted world was being exorcized by the enlightening power of reason, a new kind of demon mischievously materialized in the scientific imagination itself. Scientists began to employ hypothetical beings to perform certain roles in thought experiments―experiments that can only be done in the imagination―and these impish assistants helped scientists achieve major breakthroughs that pushed forward the frontiers of science and technology.

What's the nature of reality? Does the universe ever end? What is time, and does it even exist? These are the biggest imagination-stretching, brain-staggering questions in the universe - and here are their fascinating answers. From quantum weirdness to freaky cosmology (like white holes - which spew out matter instead of sucking it in), This Book Will Blow Your Mind takes you on an epic journey to the furthest extremes of science, to the things you never thought possible.

For film aficionados, Walter Murch is legendary - a three-time Academy Award winner, arguably the most admired sound and film editor in the world for his work on Apocalypse Now, The Godfather trilogy, The English Patient, and many others. Outside of the studio, his mind is wide-ranging; his passion, pursued for several decades, has been astrophysics, in particular the rehabilitation of Titius-Bode, a long-discredited 18th century theory regarding the patterns by which planets and moons array themselves in gravitational systems across the universe.

Guido Tonelli nous plonge dans une véritable odyssée spatio-temporelle, remarquablement documentée et alimentée par les travaux des grands chercheurs à l’origine des avancées majeures en physique théorique.

On September 14, 2015, after 50 years of searching, gravitational waves were detected for the first time, and astronomy changed forever. Up until then, investigation of the universe had depended on electromagnetic radiation: visible light, radio, X-rays, and the rest. But gravitational waves - ripples in the fabric of space and time - are unrelenting, passing through barriers that stop light dead.

When his missionary brother renounced faith in favor of atheism, Perry Marshall was plunged into crisis and doubt. He decided: “I”m going to let science make this decision for me.” He asked: “Is the hand at the end of my arm purposeful? Or is it purposeless?” He leapt into the void of evolution and the origin of life. He could not have begun to anticipate what he was about to discover. Living things were far more sophisticated than textbooks were saying.

With all the passion, curiosity, and precise yet lyrical prose that have marked his previous books, Alan Lightman here explores the emotional and philosophical questions raised by discoveries in science, focusing most intently on the human condition and the needs of humankind. He looks at the difficult dialogue between science and religion, the conflict between our human desire for permanence and the impermanence of nature, the possibility that our universe is simply an accident, the manner in which modern technology has separated us from direct experience of the world, and our resistance to the view that our bodies and minds can be explained by scientific logic and laws.

Fear of Physics is a lively, irreverent, and informative look at everything from the physics of boiling water to cutting-edge research at the observable limits of the universe. Rich with anecdotes and accessible examples, it nimbly ranges over the tools and thought behind the world of modern physics, taking the mystery out of what is essentially a very human intellectual endeavor.

On April 10, 2019, award-winning astrophysicist Heino Falcke presented the first image ever captured of a black hole at an international press conference - a turning point in astronomy that Science magazine called the scientific breakthrough of the year. That photo was captured with the unthinkable commitment of an intercontinental team of astronomers who transformed the world into a global telescope. While this image achieved Falcke’s goal in making a black hole “visible” for the first time, he recognizes that the photo itself asks more questions for humanity than it answers.

The fundamental outlines of the physical world, from its tiniest particles to massive galaxy clusters, have been apparent for decades. Does this mean physicists are about to tie it all up into a neat package? Not at all. Just when you think you’re figuring it out, the universe begins to look its strangest, and this book illustrates how answers often lead to more questions and open up new paths to insight.

Our understanding of nature's deepest reality has changed radically, but almost without our noticing, over the past 25 years. Transcending the clash of older ideas about matter and space, acclaimed physicist Frank Wilczek explains a remarkable new discovery: matter is built from almost weightless units, and pure energy is the ultimate source of mass. He calls it "The Lightness of Being." Space is no mere container, empty and passive. It is a dynamic Grid, modern ether, and its spontaneous activity creates and destroys particles.