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 for many mechanical works. Such as milling grains, water pumping, and power generation. The electric power is generated through the use of kinetic energy of … Read more

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 of energy and makes our environment cleaner. Solar energy is used in many ways for example cooking, heating, drying, distillation for power generation, cooling, refrigeration … Read more

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 on the principle that the intensity of light received by the observer depends upon distance of observer from source and temperature of distant source. The … Read more

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 (ESA) Gaia spacecraft has made a chilling prediction that our sun is sort of midway through its lifestyles span and whilst it reaches the give … Read more

Classification of energy source :- The energy source can be classified into two types on the basis of their consumption : Primary Energy sources Secondary Energy Sources Primary energy sources are used in the natural form in which they occur. Sun, wood, fossil fuels etc. are the example of primary energy sources. Secondary sources are … Read more

Definition of energy What is energy in physics: The simple answer to this question is the ability or capacity to perform work. But in Physics energy is a property of an object which can be transferred to other objects or converted into different forms. It is not possible to give a general description of energy … Read more