Showing titles in Physics

Today, across the universe, at the heart of every galaxy, and dotted throughout, mature black holes are creating chaos. And in a quiet part of the universe, the Swift satellite has picked up evidence of a gruesome death caused by one of these dark powers. High-energy X-ray flares shooting out from deep within the Draco constellation are thought to be the dying cries of a white dwarf star being ripped apart by the intense tides of a supermassive black hole—heating it to millions of degrees as it is shredded at the event horizon.

The Great Courses has produced thousands of lectures that have introduced millions of lifelong learners to some of the biggest and most fascinating ideas that humans have ever thought. Now, enjoy 36 lectures specially curated from some of our most popular courses and get an interesting learning experience across a wide range of disciplines.

"It doesn't take an Einstein to understand modern physics," says Professor Wolfson at the outset of these 24 lectures on what may be the most important subjects in the universe: relativity and quantum physics. Both have reputations for complexity. But the basic ideas behind them are, in fact, simple and comprehensible by anyone. These dynamic and illuminating lectures begin with a brief overview of theories of physical reality starting with Aristotle and culminating in Newtonian or "classical" physics. After that, you'll follow along as Professor Wolfson outlines the logic that led to Einstein's profound theory of special relativity and the simple yet far-reaching insight on which it rests. With that insight in mind, you'll move on to consider Einstein's theory of general relativity and its interpretation of gravitation in terms of the curvature of space and time.From there, you'll embark on a dazzling exploration of how inquiry into matter at the atomic and subatomic scales led to quandaries that are resolved-or at least clarified-by quantum mechanics, a vision of physical reality so profound and so at odds with our experience that it nearly defies language.By bringing relativity and quantum mechanics into the same picture, you'll chart the development of fascinating hypotheses about the origin, development, and possible futures of the entire universe, as well as the possibility that physics can produce a "theory of everything" to account for all aspects of the physical world. But the goal throughout these lectures remains the same: to present the key ideas of modern physics in a way that makes them clear to the interested layperson.

In the 18th century, the British minister and mathematician Thomas Bayes devised a theorem that allowed him to assign probabilities to events that had never happened before. It languished in obscurity for centuries until computers came along and made it easy to crunch the numbers. Now, as the foundation of big data, Bayes's formula has become a linchpin of the digital economy. But here's where things get interesting: Bayes's theorem can also be used to lay odds on the existence of extraterrestrial intelligence, and on the biggest question of all: how long will humanity survive?

In this fascinating collection of articles and speeches, Albert Einstein reflects not only on the scientific method at work in his own theoretical discoveries, but eloquently expresses a great appreciation for his scientific contemporaries and forefathers, including Johannes Kepler, Isaac Newton, James Clerk Maxwell, Max Planck, and Niels Bohr. While Einstein is renowned as one of the foremost innovators of modern science, his discoveries uniquely his own, through his own words it becomes clear that Einstein viewed himself as only the most recent in a long line of scientists driven to create new ways of understanding the world and to prove their scientific theories.

The only child of Holocaust survivors who fled to Australia in 1950, Kruszelnicki has always forged his own destiny in an idiosyncratic way. Before he became one of the world's favourite scientific storytellers, he ambled through a convoluted cacophony of a career. In this long-awaited autobiography, you will learn that it's okay not to have a linear path through life, and that by following our curiosities and our passions, we can bend the universe to our liking.

In 1927, Niels Bohr and Albert Einstein began a debate about the interpretation and meaning of the new quantum theory. This would become one of the most famous debates in the history of science. What (if any) limits should we place on our expectations for what science can tell us about physical reality? As Quantum Drama reveals, science owes a large debt to those who kept the discussions going before definitive experimental inquiries became possible. Although experiment moved the Bohr-Einstein debate to a new level, it has by no means removed or resolved the fundamental question.

The brain is made up of 85 billion neurons, which are connected by over 100 trillion synapses. For over a century, a diverse array of researchers have been trying to find a language that can be used to capture the essence of what these neurons do and how they communicate - and how those communications create thoughts, perceptions, and actions. The language they were looking for was mathematics, and we would not be able to understand the brain as we do today without it.

There was a time when “universe” meant all there is. Everything. Yet, in recent years discoveries in physics and cosmology have led a number of scientists to conclude that our universe may be one among many. With crystal-clear prose and inspired use of analogy, Brian Greene shows how a range of different “multiverse” proposals emerges from theories developed to explain the most refined observations of both subatomic particles and the dark depths of space.

In a field known for startling ideas, the Many-Worlds Interpretation (MWI) of quantum mechanics may take the prize. It holds that parallel to our own world are a large number of other universes, almost identical to ours but with small variations. Copies of each of us inhabit a myriad of these worlds. But they are not us exactly; they share our past history, but they are different people who have unique futures. Although these realms are invisible and can’t communicate with each other, prominent physicists are convinced they must exist.

E=mc2: It may be Einstein’s most well-known contribution to modern science, but how many people understand the thought process or physics behind this famous equation? In this collection of his seven most important essays on physics, Einstein guides the listener step-by-step through the many layers of scientific theory that formed a starting point for his discoveries.

Fundamental is a comprehensive beginner's guide to quantum mechanics, explaining not only the weirdness of the subject but the experiments that proved it to be true. Using a humorous and light-hearted approach, Fundamental tells the story of how the most brilliant minds in science grappled with seemingly impossible ideas and gave us everything from microchips to particle accelerators.

The Los Angeles Times headline screamed: Rocket Scientist Killed in Pasadena Explosion. The man known as Jack Parsons, a maverick rocketeer who helped transform a derided sci-fi plotline into actuality, was at first mourned as a scientific prodigy. But reporters soon uncovered a more shocking story: Parsons had been a devotee of the city’s occult scene.

Written in simple and accessible language, this nontechnical introduction to cosmology, or the creation and development of the universe, explains the discipline, covers its history, details the latest developments, and explains what is known, what is believed, and what is purely speculative. In addition, the author discusses the development of the Big Bang theory, and more speculative modern issues like quantum cosmology, superstrings, and dark matter.

Long before there was VHS versus Betamax, Windows versus Macintosh, or Blu-Ray versus HD-DVD, the first and nastiest standards war was fought over how electricity would be transmitted around the world: alternating current (AC) and direct current (DC). The savage showdown between AC and DC changed the lives of billions of people, shaped the modern technological age, and set the stage for all standards wars to follow.

In the years following her role as the lead author of the international best seller, Limits to Growth - the first book to show the consequences of unchecked growth on a finite planet - Donella Meadows remained a pioneer of environmental and social analysis until her untimely death in 2001. Thinking in Systems is a concise and crucial book offering insight for problem-solving on scales ranging from the personal to the global. Edited by the Sustainability Institute's Diana Wright, this essential primer brings systems thinking out of the realm of computers and equations and into the tangible world....

Have you ever wondered how your early life shaped you? From beginning to say simple words like 'mama' and learning how to walk around unaided, to the first day of school and forming new friendships, everyone has been a child. The roots of our adult selves go right back to our first experiences. How we think, act and interact is influenced by our early years, yet most people don't know the key findings from the juiciest child development studies that can give us insight into our adult selves.

Why can your foot move halfway to the brake pedal before you're consciously aware of danger? Why do you notice when your name is mentioned in a conversation that you didn't think you were listening to? Why are people whose name begins with J more likely to marry other people whose name begins with J? Why is it so difficult to keep a secret? Renowned neuroscientist David Eagleman navigates the depths of the subconscious brain to illuminate these surprising mysteries.

In this eye-opening book, psychologist Jesse Bering argues that we are all sexual deviants on one level or another. He introduces us to the young woman who falls madly in love with the Eiffel Tower, a young man addicted to seductive sneezes, and a pair of deeply affectionate identical twins, among others. He challenges us to move beyond our attitudes towards "deviant" sex and consider the alternative: What would happen if we rise above our fears and revulsions and accept our true natures?

The beauty of fractal patterns and their relation to chaos, as well as the history of chaos, and its uses in the real world and implications for the philosophy of science are all discussed in this Very Short Introduction audiobook.