加拿大卡尔加里大学Essay代写:电力的释义

电是一种能源。电是电子的流动。所有物质都由原子组成,原子有一个中心,称为原子核。核包含称为质子的带正电粒子和称为中子的不带电粒子。原子核被称为电子的带负电粒子包围。电子的负电荷等于质子的正电荷,原子中的电子数通常等于质子的数量。当质子和电子之间的平衡力被外力扰乱时,原子可能获得或失去电子。当电子从原子“丢失”时,这些电子的自由运动构成电流。电是自然界的基本组成部分,是我们最广泛使用的能源形式之一。我们从其他能源转换中获得电力,这是一种二次能源,如煤炭,天然气,石油,核能和其他自然资源,这些资源被称为主要资源。许多城镇和瀑布(机械能的主要来源)一起建造,使水轮转向工作。在100多年前开始发电之前,房屋用煤油灯点燃,食物在冰箱中冷却,房间用燃木或燃煤炉加热。从本杰明富兰克林在费城风筝暴风雨之夜的实验开始,电力原理逐渐被理解。在19世纪中期,随着电灯泡的发明,每个人的生活都发生了变化。在1879年之前,电弧已被用于室外照明的弧光灯。灯泡的发明用电来为我们的家庭带来室内照明。 加拿大卡尔加里大学Essay代写:电力的释义 Electricity is a form of energy. Electricity is the flow of electrons. All matter is made up of atoms, and an atom has a center, called a nucleus. The nucleus contains positively charged particles called protons and uncharged particles called neutrons. The nucleus of an atom is surrounded by negatively charged particles called electrons. The negative charge of an electron is equal to the positive charge of a proton, and the number of electrons in an atom is usually equal to the number of protons. When the balancing force between protons and electrons is upset by an outside force, an atom may gain or lose an electron. When electrons are "lost" from an atom, the free movement of these electrons constitutes an electric current. Electricity is a basic part of nature and it is one of our most widely used forms of energy. We get electricity, which is a secondary energy source, from the conversion of other sources of energy,...
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加拿大卡尔加里大学Essay代写:弗林效应简介

研究人员提出了几种理论来解释弗林效应。一种解释与健康和营养的改善有关。例如,在过去的一个世纪中,怀孕期间吸烟和饮酒的使用减少,停止使用有害的含铅涂料,改善传染病的预防和治疗以及改善营养。正如Scott Barry Kaufman为今日心理学写的那样,“弗林效应提醒人们,当我们给人们更多的繁荣机会时,更多人会兴旺发达。”换句话说,弗林效应可能部分归因于以下事实:二十世纪,我们开始解决许多阻碍前几代人充分发挥潜力的公共卫生问题。对弗林效应的另一种解释与过去一个世纪因工业革命而发生的社会变革有关。在TED演讲中,弗林解释说,今天的世界是“一个我们不得不养成新的心理习惯,新思维习惯的世界。”弗林发现,在要求我们找到的问题上,智商得分增长最快不同事物之间的相似性,以及解决问题的更抽象类型 - 这两者都是我们在现代世界中需要做更多的事情。已经提出了几个想法来解释为什么现代社会可能会导致智商测试得分更高。例如,今天,我们中的许多人都有苛刻的,智力严谨的工作。学校也发生了变化:虽然20世纪初的学校考试可能更侧重于记忆,但最近的一项考试可能更侧重于解释某些事情的原因。此外,今天更多的人可能会完成高中并继续上大学。家庭规模往往较小,并且有人建议这可以让孩子在与父母互动的同时学习新的词汇。甚至有人认为我们消费的娱乐今天更加复杂。试图理解和预测喜欢的书或电视剧中的情节点可能实际上让我们变得更聪明。 加拿大卡尔加里大学Essay代写:弗林效应简介 Researchers have put forward several theories to explain the Flynn effect. One explanation has to do with improvements in health and nutrition. For example, the past century has seen a decrease in smoking and alcohol use in pregnancy, discontinuation of the use of harmful lead paint, improvements in the prevention and treatment of infectious diseases, and improvements in nutrition. As Scott Barry Kaufman writes for Psychology Today, “The Flynn effect serves as a reminder that when we give people more opportunities to prosper, more people do prosper.” In other words, the Flynn effect could be partially due to the fact that, over the twentieth century, we’ve started addressing many of the public health issues that prevented people in earlier generations from reaching their full potential. Another explanation for the Flynn effect has to do with societal changes that have occurred in the past century as a result of the Industrial Revolution. In a TED talk, Flynn...
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