Showing posts with label law. Show all posts
Showing posts with label law. Show all posts

Friday, November 4, 2016

Physicists have made an unexpected discovery related to the second law of thermodynamics, one of the most important principles of physics

Photo ; insspirito/Pixabay  
Thermodynamic laws are some of the most important principles of modern physics that define how the three amounts fundamental physics - temperature, energy and entropy (the amount of thermal condition of physical systems, which increases during an irreversible transformation of their own, but in the case of reversible transformations remains constant) - behave in certain circumstances.

Now physicists have discovered an ambiguity in one of these laws could create scenarios where entropy could diminish with time. Thanks to modern physics, almost every phenomenon in the universe can be explained using the theory of relativity and quantum mechanics using. But in addition, there are four laws of thermodynamics, which explains how heat (or heat) is converted to or from different types of energy.

But the second law of thermodynamics is of particular importance, since this energy transition from a system usable by one unusable. As usable energy in a closed or isolated system decreases and unusable energy increases entropy, in turn, increases.

As said by researchers, the second law of thermodynamics is probably much deeper than first law (which states that energy can not be created or destroyed), because the limitations of the universe. But what would happen if there was the possibility of creating a system that would decrease the entropy?

Researchers at the US Department of Energy's Argonne National Laboratory said they found ambiguity in the second law of thermodynamics, entropy which is moving towards another direction at a microscopic scale. They investigated a concept that is based on this law, called the theory H which, in its most simple, discloses that if you open a door between two rooms, one heated and the other not, it will produce a balance of heat . But as the researchers claimed, it is imposbil explain how each molecule moves in this scenario, so physicists analyzed as a group, not individually. But to identify the conduct of each molecule, according Theory H Laboratory Argonne decided to treat this study at a quantum scale. They did so using quantum information theory, which is based on a variety of natural materials applied abstract mathematical systems to be condensed discovered a new quantum theory H. "This makes manageable Theory H wording consistent with things that can be observed by physicists," says one of the team who started this study, Ivan Sadovskyy.

The researchers believe it is likely that the circumstances in which entropy decreases to be analyzed using this new vision Theory H.



Source: Science Alert

Thursday, September 22, 2016

Although it was a less educated man, he became one of the most influential scientists of all time

On September 22, 1791 was born British physicist and chemist Michael Faraday, the discoverer of electromagnetic induction. He formulated the laws of electrolysis, known as "Faraday's law of induction" (d. August 25, 1867).

Faraday was a famous chemist and physicist whose experiments English on electricity led to the invention of technologies that use electricity in various ways.

Faraday_Michael_Christmas_lecture_detail photo wikipedia

Although it was initially a less educated man, and his mathematical knowledge were modest, Michael Farady became one of the most influential scientists of all time.


His experiments were those that made electricity have applications in technology. During his lifetime, Faraday rejected a knighthood offered by Queen. Modesty caused him also to give twice the title of President of the Royal Society of British.

Invenit Mundo It presents the main meanings of the day September 22:

1326 - The earliest mention ennoblement of a Romanian prince of the Hungarian king

1768 - died in Rome, Bishop John Innocent Micu Klein (Klein), fighter for the cause of Romanians from Transylvania. The remains have been brought in Romania, due to the desire of wills and buried in Blaj, on 16 October 1997 (b. June 24, 1692).


1873 - was born mathematician Dimitrie Pompeiu member of the Romanian Academy. It founded the school of mathematical theory of partial differential equations and mechanics. (D. October 7, 1954).

1919 - He died Ivan Vazov, Bulgarian writer and journalist (b. June 27, 1850).

1928 - Romania has ratified international sanitary Paris (ending 21 June 1926).

1934 - He died engineer and art historian George Bala; Anghel Saligny collaborated with the construction of Cernavoda Bridge; member of the Romanian Academy (b. April 24, 1868).

1975 - A mathematician died Enrico Bompiani, one of the founders of the International Mathematical Union, foreign honorary member of the Romanian Academy (b. February 12, 1889).

1979 - Israel makes a nuclear test in the Indian Ocean.

1981 - Official opening of the French high-speed train Train à Grande Vitesse (TGV)

1994 - He died writer and theologian Alexander Bardieru, born in Northern Bukovina. He wrote children's literature. ( "Barbel, barbel mischievous", "Norocel Thumb," "Tales immortal") (n.12 March 1913).

1996 - Dorothy Lamour died, singer and American film actress (b. December 10, 1914).

2001 - A Ukrainian died violinist Isaac Stern (b. July 21, 1920)

2003 - He died British journalist Hugo Young (b. October 13. 1938)

2006 - He died actor Edward Albert (n. 1951)

2007 - A Brazilian footballer died Bodinho (Nilton Coelho da Costa) (b. 1928)


2007 - died French mime artist Marcel Marceau (b. March 22, 1923)

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