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Energy

The simple answer to this question is the ability or capacity to perform work. But in physics, energy is a property of object which can be transfer to other objects or converted in to different forms. It is not possible to give a general description of energy because of its different forms.

We are live in a world having energy everywhere. Energy is inside as well as outside the body. For instance Air, water, soil, fire and sun are various sources of energy. The source which are extensively used are conventional source. Which are not used excessively are non-conventional source of energy.

Conventional sources fulfill the major part of the demand of energy. Non conventional are alternate sources of energy. Hydro energy, biomass, natural gas, and fossil fuels are conventional sources whereas solar energy, tidal power, and nuclear power, wave energy and geothermal energy are some of the non-conventional sources of energy.

Unit of energy

For the Quantitative discussion we need units to measure the energy. The energy of a body is define as its capacity for doing work. The unit of energy is same as that of work i.e. “Joule” In SI system and “erg”  in the CGS system. joule symbolic representation is J.

Energy (J)  =  Force(N) *Distance(M)

1 joule is define as the energy supply by the force of 1 Newton to move an object through a distance of 1 metre. Joule is dimensionally equivalent to 1 Newton metre.

Sometimes energy is measure in terms of power.  Practically energy and power are different but power consumed energy. So If the power of an electric heater is 1 kilowatt and it works for an hour,  it consumes one kilowatt-hour (kWh) of energy.

In discussion of energy production and consumption, the Unit barrel of oil  equivalent and ton of oil equivalent are often use. The imperial/US units for Energy foot – pound force (1.3558J), the British thermal unit (btu).  Which has various value in the region of 1055J, the horsepower-hour(2.6845 MJ), and the gasoline gallon equivalent (about 120 MJ).

The various types of renewable sources of energy are used in present days.

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Those types of Energy sources which can be renewed again and again are called renewable sources of energy. They are available in very large amount and probably they will never …

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How is geothermal energy generated? 3 ways to generate electricity from geothermal energy.

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The earth is constantly generating naturally occurring heat. This heat is known as geothermal heat and can be used to produce electricity. Electricity produced from geothermal energy is environmentally friendly …

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Solar Thermal Power|How is solar energy converted into electricity

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In this article we will study about solar thermal power and how is solar energy converted into electricity. We will study the basic five method which are commonly use to …

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What is Ocean Thermal Energy? Advantages of Ocean Thermal Energy.

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Ocean Thermal Energy The energy in the ocean waves is a converted form of concentrated solar energy. The energy which comes from the sun is transferred through Complex wind electromagnetic wave interactions. …

Read moreWhat is Ocean Thermal Energy? Advantages of Ocean Thermal Energy.

What is Hydro energy?

by shabbusharma

Hydro energy definition Hydro energy definition is – The kinetic energy process by flowing water can be converted into electricity. The power is then used for direct mechanical purposes or …

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What is Ocean energy? Ocean thermal energy definition.

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What is ocean energy Ocean energy has been developing itself for the last decade as an innovative renewable source of energy. Since water covers nearly 70% of the earth’s surface. So water …

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What is wind energy? Advantages and Disadvantages.

by shabbusharma

Wind energy means the kinetic energy carried by the wind. It has been used as a source of energy on earth since long back. It is being used by humans …

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Advantages and Disadvantages of solar energy

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Advantages and Disadvantages of solar energy – Solar energy is the cause of our survival. Without solar energy life is not possible. It also reduce our dependence on non-renewable source …

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What is an Optical Pyrometer? – Definition, Construction, Pyrometer Working

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Optical Pyrometer To measure the solar radiation a special instrument is used known as pyrometer. Optical Pyrometer is a device which measure the temperature of distant objects. It is based …

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Sun and Solar Energy

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In this article we will study how the sun is going to die and the importance of solar energy on earth. Sun is going to die The European Space Agency’s …

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