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Millions of people visit xkcd.com each week to read Randall Munroe's iconic webcomic. His stick-figure drawings about science, technology, language, and love have a large and passionate following. Fans of xkcd ask Munroe a lot of strange questions. What if you tried to hit a baseball pitched at 90 percent the speed of light? How fast can you hit a speed bump while driving and live? If there was a robot apocalypse, how long would humanity last? In...
Publisher
The Great Courses
Language
English
Description
Quantum mechanics gives us a picture of the world so radically counterintuitive that it has changed our perspective on reality itself. In Quantum Mechanics: The Physics of the Microscopic World, award-winning Professor Benjamin Schumacher gives you the logical tools to grasp the paradoxes and astonishing insights of this field.
Publisher
The Great Courses
Language
English
Description
Einstein spent the last decades of his life searching for a unified field theory that would unite general relativity with Maxwell's theory of electromagnetism. But by then, quantum theory had superseded Maxwell's work, rendering the entire exercise futile. See how this quest has nonetheless stimulated ideas for unification in proposals such as string theory.
Publisher
The Great Courses
Language
English
Description
Explore the phenomenon of mixing - a crucial process for any situation where the product is composed of more than one material. Focus on the case of oil and water, which are notoriously unmixable, and discover what keeps them separate at the molecular level.
Publisher
The Great Courses
Language
English
Description
Finish the course by surveying the many uses of radiation on Earth and beyond. Passive detectors identify radioactive contamination and clandestine nuclear bomb tests. Cosmic rays can be used to "X-ray" ancient buildings and learn the secrets of their construction. And, see why some scientists speculate that humans thrive on Earth thanks to an ancient bath of radiation from a supernova explosion.
Publisher
The Great Courses
Language
English
Description
Take a behind-the-scenes tour of the Thomas Jefferson National Accelerator Facility in Newport News, Virginia, where Professor Weinstein and his colleagues use high-energy electron beams to probe the structure of the nucleus. Dr. Weinstein also explains other types of particle accelerators and their purposes, including the Large Hadron Collider in Europe.
Publisher
The Great Courses
Language
English
Description
Apply phase diagrams to the analysis of phase transitions of mixtures. Find that a mixture of two different components often has surprising properties. Learn why solder and other eutectic materials melt at a dramatically lower temperature than do their constituent substances.
Publisher
The Great Courses
Language
English
Description
Take a deeper step into the quantum world, observing how the theory of quantum electrodynamics, or QED, unites quantum mechanics with special relativity. Discover that the handy sketches of subatomic behavior called Feynman diagrams (named after physicist Richard Feynman) are really equations in disguise.
9) The Great Questions of Philosophy and Physics: Episode 2,Why Mathematics Works So Well with Physics
Publisher
The Great Courses
Language
English
Description
Physics is a mathematical science. But why should manipulating numbers give insight into how the world works? This question was famously posed by physicist Eugene Wigner in his 1960 paper, "The Unreasonable Effectiveness of Mathematics in the Natural Sciences." Explore proposed answers, including Max Tegmark's assertion that the world is, in fact, a mathematical system.
Publisher
The Great Courses
Language
English
Description
Explore the force that helps hold the atomic nucleus together, called the strong force. Chart the discovery of this mysterious mechanism - which only works at extremely short range - and see how it led to concepts such as quarks, gluons, and the color force, which is responsible for the strong interaction.
Publisher
The Great Courses
Language
English
Description
Study molar and partial molar quantities, which are indispensable for describing what happens when materials are combined. Focus on the case of water mixed with ethanol, which adds up to a surprising volume. These ideas lead to one of the most important variables in thermodynamics: chemical potential.
Publisher
The Great Courses
Language
English
Description
Turn to the problem of thermal energy flow and volume. This phenomenon causes materials to expand when heated and contract when cooled. Analyze these events at the atomic scale, and study the unusual behavior of water when it freezes - an attribute that is essential to life as we know it.
Publisher
The Great Courses
Language
English
Description
Shortly after publishing his 1905 paper on special relativity, Einstein realized that his theory required a fundamental equivalence between mass and energy, which he expressed in the equation E=mc2. Among other things, this famous formula means that the energy contained in a single raisin could power a large city for an entire day.
Publisher
The Great Courses
Language
English
Description
Study the fusion reactions that take place inside the Sun. First, consider the formidable barrier that hydrogen nuclei must overcome to fuse into helium. Then, see how the mass and temperature of a star govern the types of reactions it can support. One product of stellar reactions is neutrinos, ghostly particles that pass through the Earth (and us) in colossal numbers.
Publisher
The Great Courses
Language
English
Description
The first inklings of a successful theory of everything will probably arise from symmetries and group theory. Prepare for this epochal moment by digging into these important mathematical ideas. Also, learn to approach proposed theories of everything with fascination, tinged with healthy skepticism.
Publisher
The Great Courses
Language
English
Description
Compare proof for the reality of atoms with evidence for the existence of Santa Claus. Both are problematic hypotheses! Trace the history of atomic theory and the philosophical resistance to it. End with Bas van Fraassen's idea of "constructive empiricism," which holds that successful theories ought only to be empirically adequate since we can never know with certainty what is real.
Publisher
The Great Courses
Language
English
Description
Bring together all the concepts studied so far to gauge how close physicists are to a theory of everything. Focus on the shortcomings of the standard model. Then zero in on two burning questions: Why is the mass of the Higgs boson so low, and why does matter predominate over antimatter?
Publisher
The Great Courses
Language
English
Description
You explore the mystery of why atoms are stable. Niels Bohr suggested that quantum theory explains atomic stability by allowing only certain distinct orbits for electrons. Erwin Schrödinger discovered a powerful equation that reproduces the energy levels of Bohr's model.
Publisher
The Great Courses
Language
English
Description
When two particles are part of the same quantum system, they may be entangled with each other. In their famous "EPR" paper, Einstein and his collaborators Boris Podolsky and Nathan Rosen used entanglement to argue that quantum mechanics is incomplete. You chart their reasoning and Bohr's response.
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