Wednesday, 13 February 2008

Laser Mechanics

Most problems are connected with the laser today was the photons sound that what was named, it was decisive the fluctuation in the intensity of the laser beam, because random quantum the interaction of mechanics, that in the long run reduced feeling refinement of the implement.
The expert in physics from Planck Institute for Gravitational Physics (was known as Albert Einstein Institute) has succeeded in reducing the level of the photons sound totaling above 90 percent, through the technique mentioned the light that blackmailed that also could be worn in quantum the distribution of the subject, this means that the sign could be encoded with the key was caused by quantum the effect.
As most of you probably know, light is not emitted continuously, but in quantum packets of energy called photons. Furthermore, light sources cannot generate the same amount of photons at separate.
The Period of time, although the source of electricity continually, because of photons was dismissed randomly on the basis of recipe statistics.
In this way, previously, the laser system possibly broadcasted few photons, whereas sometimes photons about the surface that was given in the bunch that arrived almost simultaneously.
This variation in the photons sum, in this way in the minor intensity, was known as sound photons.
The light that blackmailed was reached by the move of the individual's photons in the laser beam, to get even the distribution of photons.
With did because of that, quantum knowledge of physics of statistical nature was not damaged, this means that photons emissions still processed happened randomly, but they were gathered in the pair to guarantee that they arrived in the distance of time was arranged, the effect was widely known in the field quantum physics knowledge as the twist.
But why we even needed the exact laser system like that?
Well, one sheet of the application would in the detection of the wave of gravitation.
The implement like that needed the very sensitive laser system; to accurately measure the variation in the distance of one thousand times was smaller than the diameter of the core of the atom.
According to Professor Roman Schnabel from Leibniz University, the light that blackmailed also could be used in the sending of the optic data, as him guaranteed the perfect system of the secret code and did not disrupt results of the sending.
All the laser systems in the wave detector of gravitation used the red light infra.
Schnabel explained how the effect blackmailed that was light was obtained.
Two separated the laser beam was needed, in this way the team must utilize the double of shift crystal to make the system proceeding, meant crystal had reflect the light and red light infra that optics also.
The green ray the light was utilized to polarize crystal, determined the electron in the atom to proceed with the same frequency as light.
The green light had long the wave half that was owned the red light infra.
When the electron proceeded, they enabled crystal to maintain some photons from red ray light infra, in this way if the red laser infra suffered the decline in beam intelligence straightaway was increased with the particle of photons from crystal.
But, the detection of the wave of gravitation that was difficult to be comprehended still to the cost of the place ticket.
Why was that?
Because the force exerted on the two parallel mirrors is so weak that the interference pattern obtained is practically indistinguishable, producing difference between patterns of one billion times smaller than that of an atom, scale which is practically unreachable with the available technology, especially while taking into consideration photon noise. However, this may soon change, as light squeezing promises to produce interference patterns with very regular light intensity.

Tuesday, 12 February 2008

Quantum mechanics

Quantum that delved representative quantum sign mechanics, that permitted the particle that was given against the classic mechanics principle certain.
For example, to take the electron from the atom, something must contribute with power input was equal to or higher than that was owned their respective electron.
But, quantum delved allowed in several conditions for several particles to penetrate the barrier possibly the atom, although classic mechanics said this practically impossible.
To give you the other example, quantum delved in quantum mechanics in in fact the world as jumping was not far from the chasm and was lucky.
That was absurd!
However, the effect was as real as that got.
The sign was first found in 1928 by George Gamow, that showed to alfa Radioactive that the disintegration from the place of the taking of the core through quantum delved.
Immediately after his discovery, Gamow regained consciousness that that the effect delved was not restricted exact to the core of the atom, and could become level was used until the theory of universe cosmology.
Today, quantum delved was used widely in most electronic devices that the country a part solid, like the flash memory and the great gift the importance to the semi-leader of the band and knowledge of the band of the super-leader's physics.

Thursday, 15 November 2007

Mechanic

Mechanics (Greek Μηχανική) is the branch of physics concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effect of the bodies on their environment.

The discipline has its roots in several ancient civilizations: ancient Greece, where Aristotle studied the way bodies behaved when they were thrown through the air (e.g. a stone); ancient China, with figures such as Zhang Heng, Shen Kuo, and Su Song; and ancient India, with thinkers such as Kanada, Aryabhata, and Brahmagupta. During the Middle Ages, significant contributions to mechanics were made by Muslim scientists, such as Muhammad ibn Musa, Alhacen, Avicenna, Avempace, al-Baghdadi, and al-Khazini. During the early modern period, scientists such as Galileo, Kepler, and especially Newton, laid the foundation for what is now known as Newtonian mechanics.

A person working in the discipline is known as a mechanician.