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Search results 2301 - 2310 of 3467 matching essays
- 2301: Global Economy and the Environment
- ... free trades also make it more difficult to push a political agenda. Major power such as the U.S. use economic sanctions on other countries to enforce their political agenda. Not too long ago, the French government was engaged in funding for nuclear testing. Most U.N. officials as well as the U.S. were outraged by the fact that France was not complying with the international arms agreement. As you ...
- 2302: Human Evolution
- ... profound implications for all aspects of human activity. About 10,000 years ago, one of the most important events in human history took placeplants were domesticated, and soon after, animals as well. This agricultural revolution set the stage for the events in human history that eventually led to civilization. Modern understanding of human evolution rests on known fossils, but the picture is far from complete. Only future fossil discoveries will ...
- 2303: Animal Experimentation
- ... 1982). However, it was not until the sixteenth century that many experiments on animals began to be recorded. In 1628, William Harvey published his work on the heart and the movement of blood in animals (French, 1975). In the 18OOs, when France became one of the leading centers of experimental biology and medicine-marked by the work of such scientists as Francis Magendie in experimental physiology, Claude Bernard in experimental medicine ...
- 2304: Uranium
- ... final form became uranium, a name which today is known worldwide while klaproth's own fame has faded. Uranium is as dense as gold. Uranium, was first prepared with some difficulty, in 1841 by the french chemist Eugθne Peligot, using thermal reaction of tetrachloride with potassium. Later in 1870, an important fact was established: uranium is the last and heaviest element present on earth. This was demonstrated by Dimitri Mendeleev in ...
- 2305: Aluminum
- Aluminum Aluminum was the first discovered by Danish chemist Christan Oersted in 1825 using a chemical process involving potassium amalgam. The process was later improved by French chemist Friedrich Wohler by using metallic potassium. Woholer was also the first person to measure the specific gravity of aluminum. Pure aluminum is found in an ore called bauxite. IT is estimated that aluminum is ...
- 2306: Through A Narrow Chink: An Ethical Dilemma
- ... shrug of his shoulders and a simple, "I couldn't have changed things". Again, I am disturbed by the flippant manner of his response. Yes, he acknowledged the impact the Pill had on the sexual revolution, but fails to see beyond what has already occurred, claiming powerlessness against the pace of science. Let me say that he is most likely partially correct. There is very little to be done when science ...
- 2307: The Quicksilver
- ... liquid-like metal. He called several of his colleagues over to admire it. It was passed down through the years, this chemical reaction, that formed this "Quicksilver" as the alchemists called it. One day a French chemist Antoine Laurent Lavoisier tested and proclaimed it a metal. And he named it Mercury (Hg). With strong controversy from scientists around the world, Lavoisier was never given credit until after his death.. During the ...
- 2308: Thallium
- ... a solid when at room temperature. Thallium was discovered in 1861 by a British chemist and physicist. His name was Sir William Crookes. He discovered it spectroscopically in England. He isolated it. In 1862, the French chemist Claude August again isolated it. Thallium comes form the Greek word "thallos". "Thallos" meant "green twig" or "green shoot". Thallium does not have many uses. It is used in photocells because of the electrical ...
- 2309: Photochemical Smog
- Photochemical Smog Gifted Chemistry IB Alternative Assessment Historically, the term smog referred to a mixture of smoke and fog, hence the name smog. The industrial revolution has been the central cause for the increase in pollutants in the atmosphere over the last three centuries. Before 1950, the majority of this pollution was created from the burning of coal for energy generation ...
- 2310: Oxygen
- ... of oxygen somewhat later, was the first to publicly announce his findings. The interpretation of the findings of Priestley and the resultant clarification of the nature of oxygen as an element was accomplished by the French scientist Antoine-Laurent LAVOISIER (1743-94). Lavoisier's experimental work, which extended and improved upon Priestley's experiments, was principally responsible for the understanding of COMBUSTION and the establishment of the law of conservation of ...
Search results 2301 - 2310 of 3467 matching essays
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