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Sun
We have become accustomed to it, see what is hidden by day and night, gets heavy in summer and we miss him in the winter, this is an everyday way of see the sun, however, watching it from another perspective, our closely Closest call a gigantic nuclear reactor and free energy generator that runs for thousands of millions of years, life on this planet would not be possible without it.

Only a very small amount of energy that radiates from the sun into space comes to Earth, a billionth part. Yet this amount is enough energy to power our planet for a year and a half, that if tapped into effectively. The energy that the sun pours during the day on the roof of a median household would be able to supply electricity for 24 hours.

In Germany, for an example, the government subsidizes the installation of solar panels at home, you do not even mention the difference in radiation alone r in that country compared with Spain, let alone with the Canaries, but in our country this kind of subsidy just goes to -called solar farms, bone, a supernegocio of which only the usual benefit.

Humans have used solar energy for centuries. From the seventh century BC, people used magnifying loupes to focus sunlight into beams so hot they could light fires in the wood. More d

and 100 years in France a scientist use the sun's heat to produce steam and jump-start a steam engine.

early last century, many scientists and engineers began researching ways to harness solar energy. An important development was a solar water heater invented by Charles Greeley Abbott, an American astrophysicist, in 1936.
But fossil fuels were cheap and easy to remove and to this perspective, the people and governments remained indifferent to the possibilities ades of solar energy. While we consumed fossil fuels we have forgotten the sun but that is falling on our lives, COMPREHENSIVE warming, depletion of fossil fuels etc etc, is now as stupid desep Erades turn to look at the sun as an energy source that had provided free of charge there for millions of years.

The causes of the winds, evaporation of surface water in the formation of clouds, the rain, its warmth and light are the basis of numerous chemical reactions necessary for the development of plants and animals over the centuries have led to fossil fuels like coal or oil.

Aprova Chandos Free Energy. Background - In 1883 the American inventor Charles Fritts built the first solar cell with an efficiency of 1%. The first solar cell was built using a semiconductor selenium with a thin layer of gold. Due to the high cost of this cell was used for uses other than electricity generation. The applications were for Selenium cell light sensors in the cameras exposure.

The silicon cell used today comes from the American inventor's patent Russell Ohl. It was built in 1940 and patented in 1946.

The modern era of silicon cell arrives in 1954 in Bells Laboratory. Experimenting with semiconductors accidentally found that silicon, when doping, bone, he added impurities was very sensitive to light.

The first to util ization practice of power generation in solar cells was s first two geostationary satellites, which were equipped with solar panels with only 6% efficiency . The positive results marked a pattern in the development of communications and fotovolaticos panels. The Silicon cell enters the stage of industry and development begins production technologies. The first step was and still is, more efficient search panels. This was achieved in 1970, the first solar cell heterostructure gallium arsenide (GaAs) and highly efficient developed in the Soviet Union Zohre Alferov and his research team. I must say that it's highly efficient is an ornament since the efficiency did not exceed 15%, at this point we must also clarify that only uses the silicon part of the light spectrum, red and near him, the rest is wasted. The most representative
today the use of photovoltaic panels in the aerospace sector is at Station International Space Station. The energy used comes from 16 structures of 72-meter wingspan of 12 meters wide, 864 square meters of solar panels each. No official information from the production of each of the structures. The high efficiency modules for aerospace use is around 20% efficiency. This is in reference to solar radiation on the Earth's surface in the vacuum of space, efficiency is much higher. With this data, each of the structures would provide about 170 Kw / h and the generation of the 16 structures would be about 2.7 megawatts per hour. This photovoltaic modules if they were above ground.

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Intro Chemistry

Unit III - Temperature

A. Definition

B. Grades
1. Celsius -

2. Fahrenheit -

3. Kelvin -

4. Rankine -

C. Conversion Formulas
1. Celsius to Fahrenheit - Multiply by 9, divide by 5, add 32.

2. From Fahrenheit to Celsius - Subtract 32, multiply by 5, divide by 9.

3. Celsius to Kelvin - just enough to add 273.

4. Kelvin to Celsius - Subtract 273.

5. From Fahrenheit to Kelvin - The

6. Kelvin to Fahrenheit - The

7. From Fahrenheit to Rankine - 459.67
Joins
8. Rankine to Fahrenheit - If 459.67 is

D. Referencias

- http://www.mundorespuestas.co.cc/2009/02/como-convierto-de-grados-fahrenheit.html

- http://es.answers.yahoo.com/question/index? qid = 20080117133631AANevTC

- http://www.portalplanetasedna.com.ar/Tabla_de_unidades_fisicas.pdf

- http://www.disfrutalasmatematicas.com/medida/temperatura-conversion.html

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John Dalton and Joseph John Thomson

Joseph John Thomson (1856-1940), British physicist, Nobel laureate. was born near Manchester, Lancashire, and educated at Owens College (now part of the University of Manchester) and Trinity College, University of Cambridge. In this institution taught mathematics and physics, he was professor of experimental physics at the Cavendish Laboratory, and Rector of Trinity College (1918-1940). He was also president of the Royal Society (1915-1920) and professor of natural philosophy of the royal institution of Great Britain (1905-1918).

Thomson received in 1906 Nobel Prize in physics for his work on the conduction of electricity through gases. He is considered the discoverer of the electron by his experiments with the flow of particles (electrons) that make up the cathode rays. Theoretical and an experimenter, Thomson developed in 1898, the plum pudding theory of atomic structure, which held that the electrons was n as 'plum' negative embedded in a 'pudding' of positive matter. In 1908 he was knighted.

John Dalton (1766-1844), British chemist and physicist who developed the atomic theory which is based modern physical science. Born September 6, 1766, in Eaglesfield, Cumberland (now Cumbria). was educated at a Quaker school in his hometown, where he began teaching at the age of 12 years. In 1781 he moved Kendal, where he directed a school with his cousin and his older brother. He went to Manchester in 1793 where he spent the rest of his life as a teacher, first at New College and later as a private tutor.

In 1787 Dalton began a series of meteorological studies that continued for 57 years, accumulating over 200,000 observations and climate actions in the Manchester area. Dalton's interest in meteorology led him to study a large number of phenomena and the tools needed to measure them. It was the first to test the theory that rain is caused by a decrease in temperature, not by a change in atmospheric pressure.

However, the first work of Dalton, meteorological observations and essays (1793), he paid little attention. In 1794 appeared in the Literary and Philosophical Society of Manchester an essay on blindness, a failure that he suffered, the trial was the first description of this phenomenon, named Dalton himself.

His most important contribution to science was his theory that matter consists of atoms of different masses that are combined in simple ratios to form compounds. This theory, which Dalton first formulated in 1803, is the cornerstone of modern physical science ( see Chemistry, Physics). In 1808 he published His work philosophy New chemical system, including atomic masses of various known in relation to the mass of hydrogen. Their bodies were not completely accurate but they are the basis of the modern periodic table of elements. Dalton arrived at his atomic theory through the study of the physical properties of atmospheric air and other gases. In the course of the study found the law known as 'Dalton's law of partial pressures', whereby the pressure exerted by a mixture of gases equals the sum of the partial pressures exerted every gas if volume occupied by himself total mixture.

Dalton was elected to the Royal Society of London in 1822 and four years later was awarded the gold medal of the society. In 1830 Dalton became one of the eight foreign members of the French Academy of Sciences. died on July 27, 1844 in Manchester.

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Antoine Laurent de Lavoisier

Antoine Laurent Lavoisier

(1743-1794), French chemist, considered the founder of modern chemistry.

2.

LIFE

born August 26, 1743 in Paris, and studied at the Institute Mazarin. He graduated in law at age 21. In 1765 he wrote and published an article on how to improve the lighting in the streets of Paris, for which he received a gold medal of the Academy of Sciences. For an article on analysis of water samples was elected in 1768, member of that institution, which became manager in 1785 and treasurer in 1791. That same year he joined the Ferme Générale, a private tax collector for the government. In 1771 he married Marie Paulze, daughter of the director of the agency, who quickly became his best partner, doing illustrations for his books and translating articles written in English.

Lavoisier held various public offices, including state director of business for the manufacture of gunpowder in 1776, a member of a committee to establish a uniform system of weights and measures in 1790 and commissioner of the treasury in 1791. He tried to reform the monetary system and the French tax and agricultural production methods. As a former member of the Ferme Générale, was arrested and tried by the Revolutionary Tribunal and guillotined on May 8, 1794 ( see French Revolution).

3.

ITS INVESTIGATIONS

Lavoisier made the first truly quantitative chemical experiments. showed that in a chemical reaction, the amount of matter is the same at the end and the beginning of the reaction. These experiments provided evidence to the law of conservation of matter ( see conservation laws). We also investigated the composition of the water and called for oxygen and hydrogen components.

Some of the most important experiments of Lavoisier examined the nature of combustion , showing that is a process that produces the combination of a substance with oxygen. also revealed the role of oxygen in the respiration of animals and plants. Lavoisier's explanation of combustion replaced the phlogiston theory, hypothetical substance given off by burning materials.

With the French chemist Claude Louis Berthollet and others, Lavoisier devised a chemical nomenclature, or naming system, which underlies the modern system, the method described in chemical nomenclature (1787). In elementary chemistry Treaty (1789), Lavoisier clarified the concept of element as a simple substance that can not be broken by any known method of chemical analysis, and developed a theory of the formation of compounds from the elements. He also wrote on the combustion (1777) and considerations about the nature of the fatty (1778).