World Earth Day

On 22nd April 2009 the United Nations General Assembly adopted a resolution declaring 22nd April as the “International Mother Earth Day”. The resolution was adopted to reaffirm the agenda of sustainable development and also to acknowledge the role of earth as a mother, who sustains and nurtures all the species, including humans, animals and plants.

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Important terminologies of Thermodynamics

A thermodynamic system may be defined as any specified portion of matter in the universe which is under study. A system may consist of one or more substances. Or if we defined it in terms of physics then In physics, the term “system” usually refers to any set of physical interactions isolated from the rest of the universe. Anything outside of the system, including all factors and forces irrelevant to a discussion of that system, is known as the environment.e.g., portion of test tube where reaction is taking place, is called system.

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Thermodynamics – One of the main pillar of engineering science

Thermodynamics is the oldest branch of engineering science and specifically of physics. It deals with the relationships between heat and other forms of energy. In another terms we can say that it deals with the transfer of energy from one form to another form and one place to another place.Thermodynamic focuses on concepts surrounding energy, and in the various states that systems possess, as defined by their state variables such as pressure, temperature, volume, entropy, concentration and so on.

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