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Introduction about a half million years ago human being learned to make fire by collecting and burning woods by sparkling two stones together to warm themselves, cook food, and manufacture primitive implements, thousands of years later Egyptians discovered the principles of sail and decades later Human being came to innovation of water wheel, then day by day they got deeper and deeper and dig out some new ways of transforming energy, biological, chemical, solar, or even Hydraulic. Energy “the ability to do work” is a phenomenon which in different areas people have their own definitions of it, but generally in Physics, it’s described as “an Indirectly observed quantity that is often understood as the ability of a physical system to do work on other physical systems”, or we can say in our own words that “Energy is an indirect force which results a certain change in physical system”, basically the word energy has derived from Greek word “Energia” which possibly appears in works of Aristolei in the 4th Century BC. In a physical system if we define work as force acting through a distance, then we can add that energy is always the equivalent to the ability to exert pulls and pushes against the basic forces of nature, along a path of certain length, and to meet basic needs of human being, extending life expectancy, and providing acceptable living standard, utilizing those nature forces to the composition of dead organic material is essential. The total energy on an object is identified by its mass, and for measuring energy we can use units like Joules, Kilowatts, and Kilocalories…etc. Distinction between energy and power Both are synonymous in daily living life But, power is not all the same as energy thus “the process of water passing the dams under the turbines in which turbines are moving and converting the water’s potential energy into kinetic energy and ultimately into electric energy is called power production process” in which the final result is power and the force which converts the water’s potential power into electric is called energy. Based on the Law of Conservation of Energyii, Energy cannot be created nor destroyed it only can be transformed.
Aristole (384 – 322 BC) Greek Philosopher and polymath (Teacher of Alexander the Great and Student of Plato) ii The law of conservation of energy, first formulated in the nineteenth century, is a law of physics. It states that the total amount of energy in an isolated system remains constant over time. this law means that energy can change
Sources of Energy We have got 10 sources that energy can be transformed from 1. Biomass: is basically carbon based energy, but its composition includes hydrogen molecules, usually atoms of oxygen, often nitrogen and also small quantities of other atoms including alkali, alkaline earth and heavy metals which can be found in...
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