Friday, February 14, 2020
Explain Einsteins theory of relativity and its impact upon science and Essay
Explain Einsteins theory of relativity and its impact upon science and society - Essay Example He treated matter and energy as exchangeable, not distinct. In doing so, he laid the basis for controlling the release of energy from the atom. Thus, Einstein was one of the fathers of the nuclear age (Kevles, 1989). Setting out from the discoveries of the new quantum mechanics, he showed that light travels through space in a quantum form (as bundles of energy). This was clearly in contradiction to the previously accepted theory of light as a wave. In effect, Einstein revived the old corpuscular theory of light, but in an entirely different way. Here light was shown as a new kind of particle with duel nature, simultaneously displaying the properties of a particle and a wave. This startling theory made possible the retention of all the great discoveries of 19th century optics, including spectroscopes, as well as Maxwellââ¬â¢s equation. Einsteinââ¬â¢s discovery of the law of equivalence of mass and energy is expressed in his famous equation E = mc2, which expresses the colossal energies locked up in the atom. This is the source of all the concentrated energy in the universe. The symbol ââ¬Ëeââ¬â¢ represents energy (in ergs), ââ¬Ëmââ¬â¢ stands for mass (in grams) and ââ¬Ëcââ¬â¢ is the speed of light (in centimeters per second). The actual value of c2 is 900 billion billion. That is to say, the conversion of one gram of energy locked up in matter will produce a staggering 900 billion billion ergs. Einstein predicted that the mass of a moving object would increase at very high speeds. The discoveries of quantum mechanics demonstrated the correctness of the special theory of relativity, not only qualitatively, but quantitatively. The predictions of special relativity have been shown to correspond to the observed facts. Scientists discovered by experiment that gamma-rays could produce atomic particles, transforming the energy of light into matter. They also found that the minimum energy required to create a particle depended on its
Saturday, February 1, 2020
MARKETING PROFESSIONAL Practice Essay Example | Topics and Well Written Essays - 1500 words
MARKETING PROFESSIONAL Practice - Essay Example At the next level, the people who will work on this planââ¬â¢s realization need to be identified and appropriately trained. The research for the staff required for the completion of an organizational plan begins within the organization. If specific competencies are involved in the particular project, then individuals with the required skills need to be identified. At this point, there is the following problem: is the organization involved able to respond to the financial needs of such initiative? In current case, the financial status of the particular (non ââ¬â profit) organization is rather satisfactory ââ¬â at least for now. However, the organization is not able of hiring staff; for this reason, volunteers will be asked to participate in the particular project ââ¬â supporting the organizationââ¬â¢s permanent staff. The various aspects of the specific scheme ââ¬â of attracting volunteers ââ¬â need to be carefully reviewed: a) volunteers will be treated like the permanent staff, b) the tasks allocated to volunteers will be checked ââ¬â in accordance with the skills and the competencies of each individual, c) the time period of the volunteersââ¬â¢ participation in the project will be strictly defined ââ¬â each volunteer will be asked to participate in the project for a short period ââ¬â not more than a month ââ¬â in order to guarantee the quality of the work provided but also the availability of volunteers, d) the performance of volunteers will be monitored ââ¬â ensuring that volunteers who highly perform will be rewarded for their efforts; non-financial rewards could be provided to volunteers aiming to enforce their motivation. When the financial and the non-financial resources required for the specific project have been allocated ââ¬â in the context described above ââ¬â then the practical implications and challenges of the project should be identified and evaluated. First, the phases of the project need to be presented: a) in terms of location, the project will be
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