Alberty Einstein Essays - Albert Einstein, Sigma Xi,

Alberty Einstein ALBERT EINSTEIN Albert Einstein was one of the greatest scientists of all time. Best known as a physicist for developing his famous theory of relativity, Einstein was born on March 14, 1879, in Ulm, W?rttemberg, Germany. When he was five years old, his father showed him a pocket compass. Young Einstein was deeply impressed by the mysterious behavior of the compass needle, which kept pointing the same direction no matter which way the compass was turned. He later said he felt then that ?something deeply hidden had to be behind such things.? Einstein attended public school in Munich and in Aarau, Switzerland. He then studied mathematics and physics at the Swiss Polytechnic Institute in Zurich, graduating in 1900. From 1902 until 1909 he worked as an examiner at the Swiss Patent Office in Bern. While this job had little to do with physics or math, it gave him two things. First, he got to see some of the important inventions of the day; second, he had an abundance of free time, which he spent in scienti fic investigations. (Kevles) During this time Einstein made three of his greatest contributions to scientific knowledge. In 1905, Einstein contributed three separate papers to Annalen der Physik (Annals of Physics), a German scientific periodical. Each of the three became the basis for a new branch of physics. One, for example, suggested that light could be thought of as a stream of tiny particles. This idea would become an important part of the quantum theory. Another concerned Brownian motion, an irregular motion of microscopic particles suspended in liquid of gas, which confirmed the atomic theory of matter. The last paper, titled ?The Electrodynamics of Moving Bodies,? discussed one of Einstein's most famous brainchildren: relativity, more specifically the special theory of relativity. The paper demonstrated the relativity of time, a previously unimaginable idea. Einstein once explained relativity very simply as, ?When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity. Later, in 1915, Einstein announced that he had developed a general theory of relativity based on his special theory. This general theory attempted to express all laws of physics by equations that have the same mathematical form regardless of the system of reference to which they are applied. In yet another study published in 1905, Einstein put forth his most famous equation of all, the equivalence of mass and energy, E=MC2, in which Energy is equal to mass times the speed of light squared. (Kevles, Biography.com, Quoteland.com) Einstein was a brilliant physicist. He used mathematical properties to explain things that happen throughout the universe. His theories of relativity, which were essentially mathematical formulas, revolutionized the modern world of physics. His energy mass conversion, the basis of nuclear physics and perhaps the most famous equation ever, has brought humanity as a whole into an entirely new era ? the nuclear age. Through his mathematical genius, Einstein forever changed how humans live their lives and understand the universe. After living such a brilliant life, Einstein died on April 18, 1955 in America. (Biography.com, Kelves) Bibliography Einstein, Albert; by Kelves, Daniel J. Pp. 144-145, The World Book Encyclopedia, Volume 6, 1994 edition, ?1991 by World Book, Inc. Published by World Book, Inc., a Scott Feltzer company, in Chicago. Einstein, Albert; author unknown. Taken from http://www.biography.com/cgi-bin/biomain.cgi*, on October 10, 2000. Quotations by Author: Einstein, Albert, author unknown. Taken from http://quoteland.com/qldb/author/89 on October 11, 2000. Copyright (c) 1997-2000 Quoteland.com, Inc., all rights reserved unless otherwise noted Biographies

Learn How to Conjugate Placer (to Place) in French

Learn How to Conjugate Placer (to Place) in French The French verb  placer means to put or to place. You can imagine how useful this word will be in your French conversations, so a lesson in conjugating the verb will certainly help. By the end, youll be able to use  placer  to say things such as she placed and we are placing. The Basic Conjugations of  Placer French verb conjugations are not always easy because there are many words to memorize and not all verbs follow the regular rules. Unfortunately, placer is a spelling change verb, so it does come with a catch, but its easy to remember if you understand it. For a verb like  placer,  in which the verb stem ends with a  c, there are times when it requires a  Ãƒ §. Youll find this most often in the imperfect past tense, though it can appear anywhere that an  a  or  o  come first on the infinitive ending. This change is necessary to retain the soft  c  sound. Without it, the vowels would make it sound like cat. Beyond that minor issue, you will find that  placer  uses the exact same endings as a  regular -er  verb, which is the most common conjugation pattern found in French. If you already know a few of those words, you can apply the same endings to this verb. Using the chart, you can study the most common indicative mood forms of placer. These include the present, future, and imperfect past tenses, which you will use most often. All you need to do is match the subject pronoun to the appropriate tense for your sentence. For example, I am placing is je place and we will place is nous placerons. Present Future Imperfect je place placerai plaais tu places placeras plaais il place placera plaait nous plaons placerons placions vous placez placerez placiez ils placent placeront plaaient The Present Participle of  Placer The spelling change is also required for placers present participle. Thats because it uses the -ant ending found in many regular verbs. The result is the word plaà §ant. Placer  in the Compound Past Tense Beyond the imperfect, you can also use the  passà © composà ©Ã‚  to indicate the past tense. To form it, you will need two elements: the present tense conjugate of  avoir  and the  past participle  placà ©.  When you put the two together, you get results such as  jai placà ©Ã‚  (I placed) and  nous avons placà ©Ã‚  (we placed). More Simple Conjugations of  Placer Placer  has many conjugations, though well finish this lesson with a few more of its simplest forms. Each has its own use and can be useful additions to your French vocabulary. The subjunctive can help you imply uncertainty to the act of placing. The conditional is useful for times when the action is dependent on something else. You will most likely only find the passà © simple and imperfect subjunctive in written French as these are literary tenses. Subjunctive Conditional Pass Simple Imperfect Subjunctive je place placerais plaai plaasse tu places placerais plaas plaasses il place placerait plaa plat nous placions placerions plames plaassions vous placiez placeriez plates plaassiez ils placent placeraient placrent plaassent The French imperative is used for direct commands and statements and this is the one time when its acceptable to skip the subject pronoun. Instead of tu place, you can say place. Imperative (tu) place (nous) plaons (vous) placez