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Showing posts with label history. Show all posts
Showing posts with label history. Show all posts

Tuesday, February 24, 2009

Evolution of modern science

In recent times, and especially over the past quarter century:the following trends emerged:
1. Scientific integrity has become a live issue in public culture.
2. Academia and industry as scientific work environments have converged in all sorts of ways.

In the 19th and 20th centuries, doing science was typically more of an avocation than a job. In the 17th century, the great chemist R. Boyle not only financed his science out of his own pockets but also shared a common view that doing science as a "trade" was demeaning. Anyone who accepted money to pursue knowledge would compromise their integrity. Newton, as professor of mathematics at Cambridge, was not paid to do physical or mathematical research but to teach. The 19th century's most famous scientist, Charles Darwin, was never paid to do science. Einstein's three great papers of 1905 were not part of his job specifications. True, over the course of history,
many scientific researchers were in academic employment, but with few exceptions, before the 20th century, the job of a science professor was not to produce new knowledge but to transmit and safeguard the existing one.

The transformation of science from a calling to a job happened during the course of the past century. Indeed, science is arguably the world's youngest profession: The routinization of the paid role is less than a hundred years old; the word "scientist," coined in 1840, was not in standard usage until the early 20th century. Actually almost no one agrees with boyle in that "taking
money to do science will compromise it's integrity"..

The "engineers" and the enterprising scientists whose discoveries can be turned to cures,
power, and, of course, profit are become the most prestigious sort of practitioner, the contemporary culture heroes.

The dissolution of boundaries between academia and industry has given enormous strength to modern science: resources to do what scientists want to do, time to do it, and the reputation that comes from aligning science with the concrete goods — better communications, better health and more energy-efficient products. And if the scientists inhabiting such institutions can now make a good living that too augments the value that our sort of society grants to science.

As we enter the 21st century, new institutional configurations for doing science emerge, together with new scientific agendas and new conceptions of what it is to be a scientist. Some participants and observers of the scene celebrate these changes; others are seriously worried about them. We can be sure of only one thing: The identity of the modern scientist is, in every possible sense, a work in progres.

Monday, February 23, 2009

What is mathematics?

Mathematics is often defined as the study of quantity, magnitude, and relations of numbers or symbols. It embraces the subjects of arithmetic, geometry, algebra, calculus, probability, statistics, and many other special areas of research.

There are two major divisions of mathematics: pure and applied. Pure mathematics investigates the subject solely for its theoretical interest. Applied mathematics develops tools and techniques for solving specific problems of business and engineering or for highly theoretical applications in the sciences.

Mathematics is pervasive throughout modern life. Baking acake or building a house involves the use of numbers, geometry, measures, and space. The design of precision instruments, the development of new technologies, and advanced computers all use more technical mathematics.

Mathematics is the science of structure, order, and relation that has evolved from elemental practices of counting, measuring, and describing the shapes of objects. It deals with logical reasoning and quantitative calculation, and its development has involved an increasing degree of idealization and abstraction of its subject matter.

Ancient history
Mathematics first arose from the practical need to measure time and to count. Thus, the history of mathematics begins with the origins of numbers and recognition of the dimensions and properties of space and time. The earliest continuous records of mathematical activity that have survived in written form are from the 2nd millennium BC. The Egyptian pyramids reveal evidence of a fundamental knowledge of surveying and geometry as early as 2900 BC.

The Greeks were the first to develop a truly mathematical spirit. They were interested not only in the applications of mathematics but in its philosophical significance, which was especially appreciated by Plato. They developed the idea of using mathematical formulas to prove the validity of a proposition. Aristotle, engaged in the theoretical study of logic, the analysis of correct reasoning. No previous mathematics had dealt with abstract entities or the idea of a mathematical proof.

Middle Ages
Indian mathematicians were especially skilled in arithmetic, methods of calculation, algebra, and trigonometry. Aryabhata calculated pi to a very accurate value of 3.1416. Because Indian mathematicians were not concerned with such theoretical problems as irrational numbers, they were able to make great strides in algebra. Their decimal place-valued number system, including zero, was especially suited for easy calculation. Indian mathematicians, however, lacked interest in a sense of proof. Most of their results were presented simply as useful techniques. One of the greatest scientific minds of Islam was called al-jabr who became known as algebra. Consequently, the numbers familiar to most people are still referred to as Arabic numerals.

Tuesday, January 13, 2009

Art I

The concept of what art has continuously changed over centuries.

The Latin word "art" it is equivalent to the Greek world "technique". Originally it was applied to everything that human beings produced and to all the disciplines that where learned for producing them. Therefore cooks, gardeners, constructors, painters and poets (among many others) where considered artists.

Now art is generally used to denominate the activity performed by human beings consisting in expressing (among other personal mental contents) ideas, emotions and particular visions of the world, through diverse resources.


In the past artist or artisans used to have almost the lowest social status.Nowadays famous artists (which are not necessarily good artists) are admired and venerated by some parts of society.

Current opinions of what art is differ among themselves more than historical ones.
Here are some interesting examples:
-Art is an expression of our culture and the time in which we live - and `great' art has the potential to transcend cultural boundaries.
- Art is the rubric of human consciousness.
- Art is creativity without strategy.