Energy Storage Elements
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Professor Barry Sharpless of Scripps describes the Nobel-prizewinning development of titanium-based catalysts for stereoselective oxidation, the mechanism of their reactions, and their use in preparing esomeprazole. Conformational energy of cyclic alkanes illustrates the use of molecular mechanics.
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Work by Wöhler and Liebig on benzaldehyde inspired a general theory of organic chemistry focusing on so-called radicals, collections of atoms which appeared to behave as elements and persist unchanged through organic reactions. Liebig's French rival, Dumas, temporarily advocated radicals, but converted to the competing theory of types which could accommodate substitution reactions. These decades teach more about the psychology, sociology,...more
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Professor Kleiner traces the evolution of Roman architecture from its beginnings in the eight-century B.C. Iron Age through the late Republican period. The lecture features traditional Roman temple architecture as a synthesis of Etruscan and Greek temple types, early defensive wall building in Rome and environs, and a range of technologies and building practices that made this architecture possible. City planning in such early Roman...more
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Professor Sylvia Ceyer discusses the nature of chemical equilibrium as it relates to free energy, the reaction quotient, and the relationship between K and Q. The meaning of K is further clarified and the external effects on K are identified, from adding and removing reagents to changes associated with the Principle of Le Chatelier.
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Professor Sylvia Ceyer discusses the energy of interaction in nuclear-nuclear repulsion, electron-electron repulsion, and electron-nuclear attraction.
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Professor Kleiner discusses domestic architecture at Pompeii from its beginnings in the fourth and third centuries B.C. to the eruption of Vesuvius in A.D. 79. She describes the plan of the ideal domus italica and features two residences that conform to that layout. She then presents the so-called Hellenized domus that incorporates elements of Greek domestic architecture, especially the peristyle court with columns. The primary example is...more
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A look at why the "proof" of the relation between changes in Gibbs Free Energy and Spontaneity is wrong in many textbooks.
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Professor Channing Robertson of the Stanford University Chemical Engineering Department discusses energy conservation in further depth, focusing on the design of heat exchangers.
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The disintegration of the Soviet Union resulted from a number of different factors. Three important ones are nationalism among Soviet satellite states, democratic opposition movements, and economic crisis. Along with these elements, the role of Mikhail Gorbachev should not be discounted. Although his attempt to reform communism was rejected, his reformist positions as Soviet premier helped open the way for full-fledged political...more
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Draper discusses why the DFJ Network was formed. The DFJ Network is looking for 'heroes' with passion and energy to lead a business to change the way the world works.
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Professor Sylvia Ceyer discusses the effects of temperature on reaction rates, including in her lecture the Arrhenius equation, activation energy, reaction coordinate, and the activation complex.
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A spring, a frozen loop-d-loop and more! (See if you can find the mistake I made and get the right answer!).
