Woodrow Wilson Essays - Presidency Of Woodrow Wilson, Free Essays

Woodrow Wilson Essays - Presidency Of Woodrow Wilson, Free Essays Woodrow Wilson Woodrow Wilson -Born in Virginia in 1856 and raised in the South - Democratic president whose election in 1912 ushered in a second wave of progressive reforms on the national level served as US president until 1921. New Nationalism, New Freedom Central to Theodore Roosevelts Campaign was a scheme Called ___________ ____________ which envisioned an era of national unity in which government would coordinate and regulate economic activity. Wilsons proposal , the __________ ___________ was more idealistic. He argued that concentrated power threatened individual liberty and that monopolizes should be broken to ensure a free market place. Federal Trade commission This agency was formed in 1914 to ensure fair trade and practices. Underwood Tariff 1913 This encouraged importation of cheaper foreign goods.. Federal Reserve Act 1913 This established the nations first banking system since 1836. Adamson Act 1916 A United States federal law passed in 1916 that established an eight-hour workday, with additional pay for overtime work, for interstate railroad workers Clayton Anti-Trust Act

History and Properties of M-Theory

History and Properties of M-Theory M-Theory is the name for a unified version of string theory, proposed in 1995 by the physicist Edward Witten. At the time of the proposal, there were 5 variations of string theory, but Witten put forth the idea that each was a manifestation of a single underlying theory. Witten and others identified several forms of duality between the theories which, together with certain assumptions about the nature of the universe, could allow for them to all be one single theory: M-Theory. One of the major components of M-Theory is that it required adding yet another dimension on top of the already-numerous extra dimensions of string theory so that the relationships between the theories could be worked out. The Second String Theory Revolution In the 1980s and early 1990s, string theory had reached something of a problem due to an abundance of riches. By applying supersymmetry to string theory, into the combined superstring theory, physicists (including Witten himself) had explored the possible structures of these theories, and the resulting work had shown 5 distinct versions of superstring theory. Research further showed that you could use certain forms of mathematical transformations, called S-duality and T-duality,  between the different versions of string theory. Physicists were at a loss   At a physics conference on string theory, held at the University of Southern California in spring of 1995, Edward Witten proposed his conjecture that these dualities be taken seriously. What if, he suggested, the physical meaning of these theories is that the different approaches to string theory were different ways of mathematically expressing the same underlying theory. Though he did not have the details of that underlying theory mapped out, he suggested the name for it, M-Theory. Part of the idea at the heart of string theory itself is that the four dimensions (3 space dimensions and one time dimension) of our observed universe can be explained by thinking of the universe as having 10 dimensions, but then compactifying 6 of those dimensions up into a sub-microscopic scale that is never observed. Indeed, Witten himself was one of the people who had developed this method back in the early 1980s! He now suggested doing the same thing, by assuming additional dimensions that would allow for the transformations between the different 10-dimensional string theory variants. The enthusiasm of research that sprung out of that meeting, and the attempt to derive the properties of M-Theory, inaugurated an era that some have called the second string theory revolution or second superstring revolution. Properties of M-Theory Though physicists have still not uncovered the secrets of M-Theory, they have identified several properties that the theory would have if Wittens conjecture turns out to be true: 11 dimensions of spacetime  (these extra dimensions should not be confused with the idea in physics of a multiverse of parallel universes)contains strings and branes (originally called membranes)methods of using compactification to explain how the extra dimensions reduce to the four spacetime dimensions we observedualities and identifications within the theory that allow it to reduce to special cases of the string theories known, and ultimately into the physics we observe in our universe What does the M Stand For? It is unclear what the M in M-Theory is meant to stand for, though it is likely that it originally stood for Membrane since these had just been discovered to be a key element of string theory. Witten himself has been enigmatic on the subject, stating that the meaning of the M can be selected for taste. Possibilities include Membrane, Master, Magic, Mystery, and so on. A group of physicists, led in large part by Leonard Susskind, have developed Matrix Theory, which they believe could eventually co-opt the M if it is ever shown to be true. Is M-Theory True? M-Theory, like the variants of string theory, has the problem that it is at present makes no real predictions that can be tested in an attempt to confirm or refute the theory. Many theoretical physicists continue to research this area, but when you have over two decades of research with no solid results, enthusiasm undoubtedly wanes a bit. There is no evidence, however, that strong argues that Wittens M-Theory conjecture is false, either. This may be a case where a failure to disprove the theory, such as by showing it to be internally contradictory or inconsistent in some way, is the best that physicists can hope for at the time being.