mass
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Community responses to the bubonic plague ranged from the flight of a privileged few to widespread panic and the persecution of foreigners and other stigmatized social groups. The suspicion of willful human agency in spreading the disease, identified with the work of poisoners, was a major source of anxiety. Mass religious revivals also accompanied the pandemic, with the emergence of new cults of saints and public forms of repentance. Offi...more
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After discussing the statistical basis of the law of mass action, the lecture turns to developing a framework for understanding reaction rates. A potential energy surface that associates energy with polyatomic geometry can be realized physically for a linear, triatomic system, but it is more practical to use collective energies for starting material, transition state, and product, together with Eyring theory, to predict rates. Free-radical...more
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Revolutions occur when a critical mass of people come together to make specific demands upon their government. They invariably involve an increase in popular involvement in the political process. One of the central questions concerning 1848, a year in which almost every major European nation faced a revolutionary upsurge, is why England did not have its own revolution despite the existence of social tensions. Two principal reasons account ...more
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Professor McBride expands on the recently introduced concept of the wave function by illustrating the relationship of the magnitude of the curvature of the wave function to the kinetic energy of the system, as well as the relationship of the square of the wave function to the electron probability density. The requirement that the wave function not diverge in areas of negative kinetic energy leads to only certain energies being allowed, a p...more
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The history of socialism in France can be understood in terms of the competition between revolutionary socialists and reform socialists. The former advocated abandoning electoral politics, while the latter attempted to improve conditions for workers by means of reforms within the political system. These two attitudes found figureheads in Jules Guesdes and Paul Brousse, respectively. Reform socialists and revolutionary socialists are united...more
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If there was any single belief that characterized the Victorian era it was Christian belief. Religion pervaded social and political life to an extent almost unimaginable today. Yet this was also an age of major scientific progress and discovery. Ranging from Darwin's Origin of Species to Strauss's Life of Jesus, new techniques and approaches undermined faith in the literal truth of the Bible. This lecture looks at the relationship betwe...more
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The war saw a transformation of politics at both elite and popular level. This led to the Liberals being replaced by Labour as the main party of the Left. The last purely Liberal government came to an end in 1915. The inter-war leaders, Stanley Baldwin and Ramsay MacDonald, sought to continue the mission of liberalism by civilizing the state. Yet Britain's industrial structure remained geared to the past rather than the future, and ...more
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Doppler Effect, Binary Stars, Neutron Stars and Black Holes. Doppler shift is introduced with sound waves, then extended to electromagnetic waves (radiation). The Doppler shift of stellar spectral lines and/or pulsar frequencies provides a measure of the line-of-sight (so-called radial) velocity of the source relative to the observer. Combined with Newton's law of universal gravitation, this can lead to the orbital parameters and the mass ...more
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As a result of World War I, Europe had a different understanding of war in the twentieth century than the United States. One of the most important ways in which the First World War was experienced on the continent and in Britain was through commemoration. By means of both mass-media technologies and older memorial forms, sites of memory offered opportunities for personal as well as political reconciliation with the unprecedented consequenc...more
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Frank Levinson's Top 10 Things You Must Have to Start a Business. These include: 1) Spending everything on a good team and equipment 2) Letting people know the company is in business 3) Raising limited capital 4) Taking stock of a company and determining its needs 5) Being open to opportunities 6) Having a supportive family 7) Targeting mass markets, not just niche markets 8) Having confidence in new ideas 9) Acquiring an...more
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The dynamics of a many-body system is examined. Through a variety of examples, the professor demonstrates how to locate the center of mass and how to evaluate it for a number of objects. Finally, the Law of Conservation of Momentum is introduced and discussed. The lecture ends with problems of collision in one dimension focusing on the totally elastic and totally inelastic cases.
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At the beginning, the product was an 'internet sponge' that could absorb information from a computer and be carried around on a keychain. As time went on, the idea went through lots of changes to become what the Hiptop is today. Hershenson describes the formation of the product as a critical mass process: enough stuff (people, money, time) gets scrunched together until the product comes out like a giant release of energy.
