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THERMODYNAMICS LAWS

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  Laws of thermodynamics Zeroth Law 👽 The  zeroth law of thermodynamics  states:  If two systems are each in thermal equilibrium with a third, they are also in thermal equilibrium with each other. This statement implies that thermal equilibrium is an  equivalence relation  on the set of  thermodynamic systems  under consideration. Systems are said to be in equilibrium if the small, random exchanges between them (e.g.  Brownian motion ) do not lead to a net change in energy. This law is tacitly assumed in every measurement of temperature. Thus, if one seeks to decide whether two bodies are at the same  temperature , it is not necessary to bring them into contact and measure any changes of their observable properties in time. The law provides an empirical definition of temperature, and justification for the construction of practical thermometers. The zeroth law was not initially recognized as a separate law of thermodynamics, as its ...

THERMODYNAMICS

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 WHAT'S     THE     THERMODYNAMICS? Thermodynamics is a branch of physics that deals with heat, work, and temperature, and their relation to energy, radiation, and physical properties of matter. The behavior of these quantities is governed by the four laws of thermodynamics which convey a quantitative description using measurable macroscopic physical quantities, but may be explained in terms of microscopic constituents by statistical mechanics. Thermodynamics applies to a wide variety of topics in science and engineering, especially physical chemistry, biochemistry, chemical engineering and mechanical engineering, but also in other complex fields such as meteorology. Annotated color version of the original 1824 Carnot heat engine showing the hot body (boiler), working body (system, steam), and cold body (water), the letters labeled according to the stopping points in Carnot cycle. Historically, thermodynamics developed out of a desire to increase the e...

ALBERT EINSTEIN

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  EINSTEIN BIOGRAPHY OF EINSTEIN:                                                       E=mc^2 Albert Einstein was born on March 14, 1879 in Ulm, the first child of the Jewish couple Hermann and Pauline Einstein, née Koch. In June 1880 the family moved to Munich where Hermann Einstein and his brother Jakob founded the electrical engineering company Einstein & Cie. Albert Einstein's sister Maria, called Maja, was born on November 18, 1881. Einstein's childhood was a normal one, except that to his family's irritation, he learnt to speak at a late age. Beginning in 1884 he received private education in order to get prepared for school. 1885 he started learning to play violin. Beginning in 1885 he received his primary education at a Catholic school in Munich (Petersschule); in 1888 he changed over to the Luitpold-Gymnasium, also in Munich. However, ...

ABJ ABDUL KALAM

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    Who is the ABJ.abdul kalam ? Avul Pakir Jainulabdeen Abdul Kalam.15 October 1931 – 27 July 2015) was an Indian aerospace scientist who served as the 11th president of India from 2002 to 2007. He was born and raised in Rameswaram, Tamil Nadu and studied physics and aerospace engineering. He spent the next four decades as a scientist and science administrator, mainly at the Defence Research and Development Organisation (DRDO) and Indian Space Research Organisation (ISRO) and was intimately involved in India's civilian space programme and military missile development efforts. He thus came to be known as the Missile Man of India for his work on the development of ballistic missile and launch vehicle technology. He also played a pivotal organisational, technical, and political role in India's Pokhran-II nuclear tests in 1998, the first since the original nuclear test by India in 1974.