Justus Liebig von Liebig, Baron (Justus von Liebig,
skechers shoes, 1803 年 12 May was born in Darmstadt, Germany, April 18, 1873 died in Munich, Germany) was a German chemist He is the most important contribution of agriculture and biochemistry, he founded the Organic Chemistry. It is called the As a college professor who invented the modern teaching methods for the laboratory, because this innovation, he was hailed as the greatest one of the chemical educator. He discovered the importance of nitrogen for plant nutrition, it is also known as
directory
transferred to the German chemist Liebig University of Erlangen in contributions to the field of organic chemistry and more amazing new field of research in the teaching of Liebig Giessen insisted that the creation of innovative chemistry education laboratory Liebig chemical master's 李比希李比希 youth returned to Germany in 1824 that Liebig Liebig Liebig established laboratory has received many honors a lifetime of great scientific discovery chemists of Germany May 12, 1803 Born in Darmstadt, 1873 April 18 and died in Munich. His father is a medicine, dyes, pigments and chemicals business. Liebig childhood to come into contact with chemical experiments. 1818 was as an apprentice pharmacist. 1820 at the University of Bonn, the Bonn university he came into the University of Erlangen and received his PhD in 1822. EU in the period of reaction time, Liebig for holding liberal views and actively participate in political activities is wanted. He had to leave Bonn to Paris, where the dean of the German scientific community's help and recommendations to the Humboldt Gailvsake laboratory work. 1824 completed a series of research
fulminate compounds Liebig
research. Weller is at this time of cyanide. They also write articles editor of the magazine in Gailvsake published Gailvsake two different types of compounds that have the same molecular formula. This is the first time that chemists have the same formula with different compounds, from the birth of the Also take this opportunity to become life-long enduring and close friend of Weller. Starting this year, he was in a little town called the University of Giessen in teaching, pioneering the establishment of the Student Common laboratory. Liebig with great enthusiasm into organic chemistry to transfer to the University of Erlangen received his Ph.D. in 1822. In the same year to Paris, I often heard J.-L. cover - Lussac and Dulong P.-L. lectures and other chemists. In the cover soon - Lussac's laboratory work. 1824 returned to Germany, Renji Sen, Professor of Chemistry, University, founded the Giessen laboratory. 1852 Liebig University of Munich office. In 1840 was elected member of the Royal Society. 1842 elected to the French Academy of Sciences. Liebig's contribution in the field of organic chemistry and more amazing that he made an accurate analysis of a large number of organic compounds, a number of improved methods of organic analysis, determine the chemical formula of a large number of compounds discovered isomeric phenomenon. His important contributions in chemistry are: 1829 discovery and analysis of hippuric acid; 1831 discovered and obtained chloroform and chloral; 1832 and F. Weller, discovered and made benzoin groups based theory of organic structure contribute to the development theory; 1839 proposed multi-acid theory. 30 years after 1840, he turned to research in biochemistry and agricultural chemical. He proved by experiment: plant growth need to carbonic acid, ammonia, magnesium, phosphorus, and potassium nitrate, sodium and iron and other inorganic compounds; human and animal waste only into carbonic acid, ammonia and nitrate can be absorbed by plants, etc. . These views are the foundation of modern agricultural chemical. He strongly advocated the use of inorganic fertilizers to improve harvests. He also believes that animals not only need a certain amount of food, but also a variety of species,
shape up shoes, or organic or inorganic substances, and to be a considerable proportion. He also proved that sugars can generate fat. Also proposed the principle of fermentation. Liebig made a lifetime total of 318 chemical and other scientific papers. Author of He also co-edited, and Wheeler, 1831 founder of New research in the field analysis of organic matter was still quite backward, he improved and perfected by the Gailvsake and Taina Er proposed flammability analysis, so that carbon dioxide and water according to the amount of carbon and can accurately determine hydrogen content. Later, the Duma has invented a good way to determination of organic nitrogen, thus forming a complete system for organic analysis. Giessen was this small place has become the world's chemical center of power in 19th century Germany as chemistry plays an important role. 1845 he was made a baron in 1852 due to health deteriorated after the withdrawal of teaching, but still engaged in the research work within its capacity. And start on the biochemistry became interested in the vitality of life is produced by oxidation of food by the body the energy point of view of providing a positive role in establishing. However, the understanding of the fermentation process and Berzelius was made the same mistake. In the agricultural chemical, he is also the coexistence of success and failure. First, he rightly pointed out: the main reason for the loss of soil fertility, the plant consumes the life of the soil necessary minerals, such as sodium, calcium and phosphorus. He was the first advocate the use of chemical fertilizer natural fertilizer for fertilizer instead of people. However, he mistakenly believe that the nitrogen required by plants is directly absorbed from the atmosphere, so he did not join the list of ingredients of fertilizer nitrogen compounds. This was later corrected, so that agricultural production has undergone tremendous leap forward. Liebig returned from Paris as a professor of chemistry at the University of Giessen, and immediately embarked on a plan unheard of, that is, reform the German education system and teaching the traditional chemical methods, to explore creating a new generation of chemists approach. The German University in chemistry education, usually mixed with the chemical knowledge in the teaching of natural philosophy, and no specific chemical teaching laboratory, students get training in experimental operation. Liebig know that as a real chemist only philosophical speculation is not enough chemical knowledge only from the experiment. And this experimental training at the time of the German universities has not. So Liebig determined to learn from foreign experience in chemical laboratory in Giessen, a modern laboratory, so that waves of young people received training, from training a generation of chemists. Giessen laboratory is a laboratory used for teaching chemistry, which open to all students, and in the chemical experiment at the same time be taught. Liebig prepared for laboratory teaching a new syllabus, which states: start, students handouts, while still in the learning experiment, the first use of known compounds, qualitative and quantitative analysis, and then purified from natural substances and identification of Synthesis of new compounds as well as inorganic and organic synthesis; completion of this course, under the guidance of instructors to conduct independent research as a thesis project; Finally, the identification of a PhD. Liebig laboratory that allows students to gradually transferred from the system training independent study of the teaching system, the people before him have not been recognized, and its education system for the modern chemical basis. Liebig insisted in teaching is to teach as a professor of chemical science chemistry, but by no means simply to teach application of technology. Applications for the purpose of learning just from holding the student, he was flatly rejected; but for the benefit of mankind and for students to learn chemistry, it is always supported. Liebig himself is one such example. He believes that this problem can not be upside down. He earnestly warned the students, should be the first for the country and efforts to seek truth, and then the rest of the things that only belong to themselves. Chemistry Syllabus for the creation of Giessen laboratory preparation and Liebig dedicated and rigorous scholarship, making the movement of chemical education in Germany than in any other place with greater momentum and develop a more far-reaching effects, which attracts students flocking to all directions University of Giessen, gathered in Liebig sects. In the careful guidance of Liebig, through training of laboratory training in a large number of systems known chemist. One among the best of the promising dyes basis of chemical and dye industry, Hoffman found that the role of Halon and the preparation of sodium Ci Wu hydrocarbons, benzene ring structure proposed for the organic structure theory of a solid foundation for the theory known as It is worth noting that these students are still to follow their practice of Giessen, the establishment of a number of teaching laboratories for students, so that the chemical Giessen education model in the world are actively promoting, cultivating a large number of well-known chemist, and formed a Liebig Giessen a school, the world has made great contributions to chemistry. Master of Chemistry Education in Chemistry Innovation Liebig May 12, 1803, Liebig was born in Darmstadt, Germany (Darnistadt). Father is a dye manufacturer, the family has a lot of chemicals. Liebig often little DIY experiment,
skechers outlet, experiment and observation he has a strong interest. Shop by his father behind the kitchen transformed into their own laboratories, in the attic, and that they secretly do fulminate experiments. Once he was doing experiments of mercury fulminate. Caused the explosion shook the entire building, a corner of the roof was destroyed, but he was not injured. For this, Liebig's father did not blame him, but said he had the courage, the pursuit of spirit. Every time when Liebig recollection of events, he said with deep feeling: his childhood chemistry experiments, to stimulate his imagination and love of chemistry. In his youth, Liebig travel long distances to Bonn to study, his first teacher was Kastner. Later, Liebig and go to the University of Erlangen and in 1822 received his Ph.D. dissertation is entitled Ph.D., he went to Paris for further studies. The Humboldt (A. Von Htmboldt, 1769 a 1859) Professor of recommendation, he entered the Gailvsake laboratory research. In 1822 a 1824 two-year study, exploring a variety of organic compounds at the same time, he has systematically studied the fulminate. Find a filler to prevent the fulminate explosion, found with roasted magnesia (MgO) and mixed with fulminate, can be very effective in preventing fulminate explosion. Liebig in the June 23, 1823 to the Academy of Sciences reported the results of his research. At that time, the presiding officer, Professor Humboldt Liebig said: Giessen, Germany served (Giessen) University of supernumerary professor, was promoted to full professor two years later, when he was only 22 years old. Liebig great many achievements in chemistry, in addition to fulminate research results, the 1829 discovery of the hippuric acid, 18N of chloral and chloroform was synthesized in 1832 and Wheeler identified phenyl acyl: 1834 proposed ethanol , ether, etc., can be seen as ethyl compounds, and named ethyl (C2H5 I). Liebig and Dumas, French chemist, in cooperation October 23, 1837 paper presented to the French Academy of Sciences said: differences. However, in the inorganic and organic chemistry, the chemistry is the same as the law. 1. Organic Chemistry 2. 3. Replacement of Liebig that an atomic group to meet two of these three conditions can be called Since then, organic chemistry, In 1837, Liebig also raised about the theory of multiple acid, carried out research on organic acids, indicating that the acid and hydrogen internal relations. In 1839, Liebig of the Meanwhile, he also studied uric acid derivatives, alkaloids, amino acids, CS, creatine and other structures and properties of organic compounds. Liebig has always been dedicated to chemical education, since 1824 after returning, he found behind the German chemical education in France, many German universities there is no professor of chemistry, chemistry class taught by a medical doctor. Chemistry Experiment conditions even worse,
shape ups skechers, there are only established a Thomson labs, some famous chemists of the laboratory, are private in nature. Can only accept one or two students to do case studies. To change this situation, Libixijia strong chemical on laboratory construction and teaching of research, so that really have the chemistry teaching the characteristics of experimental science. His efforts received the support of the school and the state, after two years of effort, Giessen University, he established a comprehensive system of experimental teaching, and his lab can accommodate 22 students doing the experiment, the classroom can be used for 120 people attended the lectures, both sides of the podium a variety of laboratory equipment and instruments, you can easily do all sorts of people for the lecture demonstration experiment. Liebig's laboratory was established known as Liebig laboratory research and teaching style, and soon left the world pass. Liebig also create and improve a number of chemical apparatus, such as the burning of organic analysis instrument. Liebig condenser ball, glass condenser and so on. These instruments are convenient and durable,
skechers women, so instrument manufacturers in Germany have a lot of imitation, to other countries. In order to develop teaching, Liebig also prepared with a new system of chemical curricula. He believes that chemistry is not only an experimental science, and directly related to the destiny and people's lives. So he said: This can develop a strong working ability. Liebig life for the chemical business first class train a large number of chemists, Russia, Qi Ning, France, Japan Lal, UK Williamson, Germany Hoffman, Kekule, in addition, as the rich Lanke Lan, Wu hereby, are students of Liebig. Liebig of inorganic chemistry, organic chemistry, biochemistry, agricultural chemistry have made outstanding contributions. He invented and improved methods of organic analysis, accurate analysis of numerous organic compounds, synthesis over chloroform (CHC13), chloral (CCl3CHO) and a variety of organic acids, he has been working with others, made compounds The concept of group and multiple acid theory. Liebig pioneered the study of agricultural chemical make plants need nitrogen, phosphorus, potassium and other essential elements to study the problem of improving soil fertility, therefore, he was farming circles as Liebig life received many honors in 1860 was elected president of the Bavarian Academy of Sciences, has been selected as Germany. France, Britain,
shape up skechers, Russia, Sweden and other countries, or honorary fellow of the Academy of Sciences. April 18, 1873, died in a cold Liebig Munich, Germany. Liebig as a scientific giant, reputed in Europe. However, the scientific truth is cruel, he never yield to the power nor the prestige attached to famous, he only people who prefer realistic. A major scientific discoveries in the famous chemist discovered element bromine due to pull the first four years, Liebig had received a bottle of brown liquid, which is a German businessman to him, is said to be gray seaweed filtrate. Businesses wanting to Liebig analysis shows that this bottle of liquid ingredients. At Liebig's laboratory equipment and experimental techniques, is perfectly placed this new element found in bottles of liquid bromine. However, Liebig did not do serious chemical analysis, only looked at with the ########## eye, jumped to the conclusion, the bottle thing is August 14, 1826, French chemist Baral, announced the discovery of new elements in the nature of this element between bromine chloride and iodine between the discovery shocked the chemical industry. Liebig after seeing the report Baral, four years ago, he suddenly remembered the bottle into the cupboard, made him excited and distressed. It turned out that the bottle of brown liquid does not contain chlorine, do not contain iodine, but not his guess of If four years ago, Liebig strict scientific approach, a careful analysis of the bottle of brown liquid, then the element bromine that is not Baral, and will be Liebig. Liebig missed his great regret, hate their own carelessness, hate yourself for a lifetime of chemical research, but the lack of rigorous scientific approach. He cautioned his order, in particular, the bottle of brown liquid on the original cabinet, and the cabinet moved to the hall, a neat paste in the above note: Liebig with After the death of Liebig, the academic for his miss. People to the work of Liebig University of Giessen been, to Liebig Museum, the Liebig as organic chemistry, biochemistry and agricultural chemistry, open people. Atlas Atlas entry for more extended reading: 1
http://zhidao.baidu.com/question/26571467.html
Open Category: People, Germany, chemist
vibram outlet lilac
Linear Mode
