Encoding Information with Light’s Orbital Angular Momentum Light is the future of communication‚ traveling at 3‚000‚000 meters per second‚ the cosmic speed limit of the universe. Its tremendous speed makes it optimal for data transmission. The conventional method to encode information in light is through amplitude modulation‚ i.e. light pulses‚ time division multiplexing‚ i.e. delaying the time light beams enter a channel‚ and wavelength multiplexing‚ i.e. multiple beams of light in one channel
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Between the 1890s and World War One‚ reform efforts started taking place by the progressives. The progressives were not a single unified group and even had some contradicting goals. They were middle class urban dwellers and some were women. The progressives wanted to end prostitution‚ Americanize immigrants‚ antitrust legislation created‚ women’s suffrage‚ and the start of prohibition. An example of a group of progressive women who wanted to start prohibition is The Women’s Christian Temperance
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Writers and Artists of the 1920s Summary The Harlem Renaissance was the outpouring of creativity among African American writers‚ artists‚ and musicians who gathered in Harlem‚ New York during the 1920s. Langston Hughes wrote poetry‚ plays‚ and fiction that captured the anguish of African Americans’ longing for equality. He wrote one of his best-known poems while traveling to New York at only 17 years old. James Weldon Johnson’s best-known book was The Autobiography of an Ex-Colored Man that
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technological momentum as a point between two opposite ideas; social constructivism and technological determinism. This raises questions as to what exactly the relationship is between technological momentum and soft determinism. Both ideas deal with the effect society has on technology and the effect that technology has on society. I will argue that while both ideas seem to be the same‚ there are important distinctions to make between the two. One is that Hughes’s idea of technological momentum is time
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During the Progressive Era numerous reforms were made; all of which were part of varying reform movements. Reforms were made to timeless issues such as education‚ government‚ and business. However‚ reforms were also made to new ideas such as conservation. Up until the Progressive Era there was no emphasis placed on conservation because there had always been a surplus of resources in America. During the Progressive Era‚ on the other hand‚ resources were being used up exponentially due to factors such
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Chapter 4: The Progressive Era 1890-1920 1865- The Salvation Army was started in London by a Methodist Minister as a street corner mission in the Slums 1889- Salvation Army in NYC: Slum Sisters (2 women) went to tenements to care for the sick I. The Drive for Reform Progressivism: social justice Movement in response to social problems in the 1890s (needed new ideas and efficient honest government A. Origins of Progressivism Came from all walks of life: diff political parties‚ social
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Lab 5 Conservation of Momentum and Energy Abstract The physics laws governing conservation of momentum and mechanical energy were investigated by performing multiple experiments with differing conditions. Conservation laws state energy is to be conserved in systems with no net external forces. Two trials consisted of inelastic collisions and two trials consisted of elastic conditions. Photogate software helped decipher initial and final velocities in order
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INTRODUCTION During collisions involving two bodies‚ equal and opposite forces are set up between them. These impact forces influence the subsequent motion of the bodies. Momentum of the system (consisting of both bodies) is preserved if both bodies are free to move in space. This is because there is no external forces act on the system. The forces acting between the bodies during the small interval of time when they are in contact cause changes in the velocities of each separate body. An
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Maggie Haas Reiter Honors Physic 8 March 2015 Background Information: Anything that has mass and is moving has momentum. Momentum is equal to the objects mass times its velocity. Momentum is conserved‚ which means that “momentum before an event equals momentum immediately after‚ or pi=pf”. Since pi=pf‚ then pai+ pbi = paf+ pbf and (ma* vai)+ (mb* vbi)= (ma* vaf) + (mb * vbf). Having velocity simply means that an object has a speed and direction. Using the formula “(ma * vai) + (mb * vbi)
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the principle of conservation of momentum in collisions using two bodies. We also calculated the amount of kinetic energy in elastic and inelastic collisions before and after the collision. Introduction: When bodies collide with each other‚ the total momentum p = mv‚ is always conserved regardless of the type of collision provided no external forces are present. There are two types of collisions. In an elastic collision‚ both the kinetic energy and the momentum are conserved. An inelastic collision
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