Friday, 11 September 2015

George Simon Ohm


George Simon Ohm (Erlangen, March 16, 1789-Munich, July 6, 1854) was a German physicist and mathematician who contributed to the theory of electricity Ohm's Law, known for his research on electrical currents.

 He studied the relationship between the intensity of an electric current, the electromotive force and resistance, formulated in 1827 the law that bears his name stating that: I = V / R also became interested in acoustics, the polarization of the batteries and light interference.

The unit of electrical resistance, the ohm, is named in his honor.1 finished occupying the position of conservative cabinet of Physics of the Bavarian Academy of Sciences and Humanities.

Tuesday, 8 September 2015

Higher Education in Saudi Arabia

Higher Education in Saudi Arabia

Higher education in Saudi Arabia is consistent with the US higher education system, but modified to accommodate Islamic traditions and customs.

The first college, King Saud University, was founded in Riyadh in 1957. The Ministry of Higher Education oversees all higher education in the country, with a particular focus on scientific research universities government. More than 200,000 students are enrolled in Saudi universities, about half of the students are women.

International students will find a friendly atmosphere in Saudi Arabia, and the government even offers special scholarship programs specifically for students who are not Saudis.

Saudi Arabia is one of the best places in the world to master's programs in Islamic studies in the country also offers a full cultural immersion and Arabic for students not from the Middle East or non-native Arabic speakers. In addition to Islamic studies, modern Saudi institutions offer a wide range of master's programs in art, science, engineering, agriculture, medicine, education, computing and information science.

Many masters curricula are taught in English, especially in technical areas such as engineering.

Saturday, 5 September 2015



Thermodynamics is the discipline inside the mother science, physics, deals with the study of the relationships established between heat and other forms of energy. Among other issues thermodynamics deals with analyzing the effects of changes in variables such as temperature, density, pressure, mass, volume, systems and macroscopic level.
The basis on which all studies of thermodynamics loom is the circulation of energy and how it is able to infuse movement.

Worth noting that this issue was just promoted the development of this science, because its origin was due to the need to increase the efficiency of the first steam engines.
Then, from the kickoff, thermodynamics, has been busy describing how systems respond to changes in their environment, and can be applied to countless situations, both science and engineering, such as motors, chemical reactions, phase transitions, transport phenomena, black holes, among others. And so their results are really appreciated for physical chemistry and chemical engineering.

Meanwhile, Thermodynamics has three fundamental laws ... the first law is popularly known as the principle of conservation of energy and states that if a system exchanges heat with another, its own internal energy change. In this case, the heat energy will be required to exchange a system to compensate for differences between the internal energy and work.

For its part, the second law proposes various restrictions on transfers of energy, which could be realized if one considers the first law; the second principle speaks of regulating direction in which are carried out thermodynamic processes, imposing the possibility that these are developed in the opposite direction. This second law rests against entropy (physical quantity measuring part of the energy may be used to produce work).

And the third and last law holds that it is impossible to reach a temperature equal to absolute zero through a finite number of physical processes.

And the most important processes that take place in thermodynamics are: isothermal (temperature unchanged), isobaric (pressure unchanged), Isochoric (the volume does not change) and adiabatic (no heat transfer occurs).

Wednesday, 2 September 2015

Vector Product

Vector Product

In mathematics, the Gibbs vector product or cross product is a binary operation between two vectors in three dimensional space.

 The result is a vector perpendicular to the vectors are multiplied, and therefore normal to the plane containing them. Because of their ability to get a vector perpendicular to two other vectors, whose meaning varies according to the angle formed between these two vectors, this operation is frequently applied to solve mathematical, physical or engineering problems.

Monday, 17 August 2015

Harvard University

how much is the application fee for harvard

Harvard University

Founded in 1636 by English settlers in New England, Harvard is the oldest US university. With exemplary tradition, Harvard has remained at the forefront of higher education and research in many academic areas. Harvard offers the combination of an outstanding student body, faculty with international recognition and a cozy Residential Houses system for its undergraduate students. They come from 50 states and nearly 80 countries; cities, suburbs, small towns and villages; public and private sectors; of all ethnicities and religions; and from all socioeconomic levels. True to its mission, Harvard remains committed to offering educational opportunities available to all quality. Also, Harvard promotes global activities of all kinds, which is reflected in the various programs, centers, initiatives and special events happening in the world. For more details, visit the website of Harvard in the World.

The Faculty

Harvard students attend classes led by teachers and leading education in their fields of study laboratories. In this intellectual community, all faculty members, including prominent academics, students dictate classroom for both undergraduate and post-graduate. In addition to attending the weekly office hours, students often meet with teachers before and after school, as well as events and dinners in residential houses. Throughout the year, hundreds of students work closely with teachers, assisting in the investigation process or being helped to embark on her own. Opportunities to establish formal and informal relationships with Harvard professors are full and rewarding.

Research Resources

The library system of Harvard University is among the largest in the world, with more than 15 million volumes. Harvard also leads the list of subscribers to electronic portals. Some libraries are considered the "gold standard" in different campuses. For example, the Library of Anthropology Tozzer.

Harvard Campus

Harvard College is located along the Charles River from Boston, and the campus is spread over 220 acres. The residential areas are located in the center of campus, along the river and in the central quadrangle. There are over 400 associated with the University buildings, all connected by an efficient transportation system. Most students walk or ride a bike, and owning a car is not a priority. A site map can be found here.

Other Harvard campus associated with the life sciences (Arnold Arboretum) and medicine (Longwood Campus) and connections with major research centers in the region.

Saturday, 8 August 2015

Induced voltage

The voltage induction (so-called electromotive force: FEM) (represented Ve) is any cause capable of maintaining a potential difference between two points of an open or producing an electric current in a closed circuit. It is a characteristic of each electric generator. Generally it is explained by the existence of an electric field whose circulation Ve, \ int_S \ Ve ds \ ,, defines the induced voltage of the generator.

Units of Measure

The voltage (also called potential difference or voltage) is defined as the generator work done to pass inside the unit negative charge of negative to positive, divided by the value of said charge in coulombs, ie Joules / coulomb. It is usually measured in volts (V) equivalent to joules per coulomb (J / C), but these are SI derived unit. In the international system are the basic units per kilogram per square meter per second party cube amp: m2 · kg · s-3 · A-1

Thursday, 6 August 2015

Ranking Of Worlds Old Universities


University of Bologna (Italy) in 1089, receiving the title of University in 1317;
Oxford University (England) in 1096;
University of Paris (France) in 1150, receiving the title of University in 1256;
University of Modena (Italy) in 1175;
University of Cambridge (England) around 1208;
University of Palencia (Spain) in 1208, the forerunner of the University of Valladolid;
University of Salamanca (Spain) in 1218 (originally it was a cathedral schools whose existence can be traced back to 1130, and is the first in Europe who held the title of University by the edict of 1253 of Alfonso X of Castile and Leon) ;
University of Padua (Italy) in 1223;
Federico II University of Naples (Italy) in 1224 (oldest secular state university in the world);
University of Toulouse (France) in 1229;
University of Valladolid (Spain), XIII century (possible result of the transfer of the University of Palencia around 1240);
University of Murcia (Spain) in 1272;
University of Coimbra (Portugal) in 1290;
University of Lleida (Spain) in 1300;
University of Perugia (Italy) in 1308.1

They are communities of teachers and esiantes. In the European Middle Ages, the word college (Latin universitas) designated a guild corporativo.8 Both could be the university of shoemakers and blacksmiths University. When "University of Salamanca" was said, for example, it was nothing more than a simple short for University Teachers and Students Salamanca.8

The university is a conglomerate formed by the faculty of arts (philosophy), faculty of law (canon and civil), the Faculty of Medicine and the Faculty of Theology. The originality of this trade association, so different from the others, provoked ardent criticism and its inicios.9

Cambridge University, for example, creates its first chair of scientific research in 1794, although the Principle Mathematica Newton were written more than a century earlier, in 1687.10 John Locke, in his book Thoughts on Education (1693) questions the education offered by the University of Oxford and European universities, recommended content such as Latin, useless, and promotes instead as "absolutely necessary" accounts and bookkeeping libros.11 Darcy Ribeiro notes that the European university germinate slow scientific progress and cultural changes of the industrial revolution and technological society XVIII.8 century

Until the nineteenth century, universities were largely elitist centers where only a testimonial percentage of the population had university studies. During the twentieth century they were normalized university studies in Europe reaching 30% of college-educated population by the end of the century. The following table shows the ratio of enrollment in several European countries 12