Prabin Kalikote

We all know, coal and petrol are obtained from the earth's crust that is deposited under the earth's crust from millions of years ago. These resources are limited in nature and get depleted after a single-use. It cannot be produced time and often. So, it is called a non-renewable energy source.

The power generated by rotating turbines using water is called hydropower. It is the main source of energy which is a pollution-free and renewable source of energy. Energy trapped in the flowing river is used to generate power on large scale in power stations which a cheaper for the long term & widely cued in electric devices. But petroleum products are temporary. They are only for a short period of time. These products are formed from the dead...

The meaning of E = mc² is when a body is moving at the speed of light, the energy produced would be equal to the product of mass that the body loses and the speed of light.

Here,    E = Energy produced,
             m = mass defect, and
             c = velocity (speed) of light.

The scientist who profounded the equation was Albert Einstein.

The acute scarcity of energy sources due to overuse or exploitation by the growing population is called an energy crisis. Any 3 ways to solve it are:

1. Adaption of alternative energy sources.
2. Banning the use of non-renewable sources and encouraging the use of renewable sources.
3. Using existing sources wisely and economically.

Scientists are busy making equipment based on solar energy because solar energy is taken as the most important and effective alternative source of energy as it is available in every part of the earth and doesn't have any negative effects on the environment. The light energy from the sun is converted into electrical energy with the help of photoelectric cells. The converted electric energy can be used again to get heat, light, etc. ...

The heat energy obtained from the hot rocks this is present inside the earth is called geothermal energy.

In the place where earthquakes and volcanoes are active, the temperature increases highly in comparison to normal. The hot underground water can be brought to the surface, fill the hole, and covered by earth. Two holes are made in the upper surface. In one of them, cold water goes inside, and in another hot vapor comes out.

This hot water vapor is...

We all know, Nepal is an agricultural country. Natural wastes, sewage, etc. can be used to generate biofuel. The most practiced profession animal husbandry is also the source of different materials like decayed grasses, dung, etc which again can be used to get biofuel. On the other hand, a lot of dense forests are found in Nepal from where a high amount of biofuel can be taken. So, in the context of Nepal, biogas energy is the best source of alternative...