Lawrence Weinstein
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Now open the hood to see how the nucleus works. Start simple with a hydrogen atom, which has a nucleus of one proton orbited by a single electron. Build from there, adding neutrons and more protons, forging elements and their isotopes and seeing how the nucleus behaves much like a liquid drop. Then use the Fermi gas model to refine your understanding of nuclear structure.
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High school chemistry introduces students to the atomic shell model, which describes the distribution of electrons around the nucleus. In this lecture, learn the analogous nuclear shell model and the magic numbers that constitute full shells of protons and neutrons within the nucleus. Also, discover how an entire nucleus can ring like a bell or spin like a top.
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Take a whirlwind tour of nuclear physics, getting a glimpse of the rich array of topics and concepts you will cover in this course. Professor Weinstein explains the constituents of the nucleus; what holds the nucleus together, its role in determining atomic identity; and the nature of isotopes. He introduces two key tools: the periodic table of elements and the table of nuclides.
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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.
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Learn the fundamentals of nuclear reactor design, which has the task of sustaining nuclear reactions at a controlled rate in order to boil water, produce steam, and drive a generator. Explore why a nuclear reactor can't explode like a bomb, and consider pluses and minuses of the most common reactor designs in use.
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Under specific circumstances, it has been possible for a nuclear reactor to fail catastrophically. Revisit the serious nuclear accidents at Three Mile Island in the U.S., Chernobyl in the Soviet Union, and Fukushima in Japan, drawing lessons on the fallibility of safety features and human operators. Track the cascading sequence of failures in each accident.
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See how hydrogen, helium, and a few other light nuclei were forged in the fiery aftermath of the Big Bang. Then, trace the formation of heavier nuclei in the interiors of stars, in supernova explosions, and in the collisions of neutron stars. Special attention is paid to the sequence of reactions and the required conditions that gave us the complete periodic table of elements.
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In this wise and charming book, Lawrence Weinstein explores how self-expression reveals the psyche and how changing language can change lives. In chapters like "Tolerating Ambiguity" and "Getting Out of One's Own Way," he describes how the proper use of an element of punctuation or syntax, even the simple reversal of an object and subject, can help one become a whole human being. Clear examples, amusing anecdotes, and telling quotes support Weinstein's...