What Is Conservation Of Energy?

Energy can neither be created nor destroyed; it can only be transformed from one form into another, but the total amount of energy remains constant.

When a stone is held at a certain height, its energy is entirely potential. When the stone is released it starts falling and gains kinetic energy (KE) due to motion. At the same time since its height is decreasing its potential energy (PE) diminishes. Thus the stone gains KE at the expense of its PE. If we ignore the energy spent in overcoming air friction, then the loss in PE is exactly equal to the gain in KE. Just before hitting the ground its energy is entirely kinetic. On hitting the ground the mechanical energy of the stone is converted into internal (heat) energy and some sound energy. This is an example of the conservation of energy.

It is a process in which electricity is used more efficiently o save energy. This can be done by a number of ways designing better buildings, manufacturing better electric bulbs, using air-conditioners sparingly and by change the life-style.

Asia is in the midst of electricity crises brought on by booming growth and wildly extravagant use of energy. Virtually every country in the region is facing a potential capacity crunch cheap, dependable electricity is vital for continued economic expansions yet the cost of new power stations is staggering. Even if, more power stations are built, with out the promotion of more efficient use of electricity, would do no good. It requires almost a revolution in the conservation methodology.

A kilowatt-hour of electricity can light 100-watt lamp for 10 hours or lift a ton one thousand feet into the air or smelt enough aluminium for a six-pack of soda cans or heat water for a few minutes' showers. But by using electricity more efficiently, more mechanical work can be taken out from the same kilowatt- hour.

We can also save energy by recycling programmers. Our food wastes can be recycled into products such as animal feed, soil amendment materials, and even fuel for power plants.

In physics, the protection of energy states that the sum amount of force in an out-of-the-way system remains steady, although it may modify forms, e.g. rubbing turns kinetic energy into thermal vigor. In thermodynamics, the initial law of thermodynamics is a declaration of the conservation of energy for thermodynamic systems, and is the new around version of the conservation of energy. In undersized, the rule of conservation of energy states that force can not be shaped or shattered, it can only be changed from one shape to another, such as when electrical energy is distorted into heat power.


The protection of energy is a common feature in many corporeal theories. It is understood as a result of No ether's theorem, which states every balance of a physical hypothesis has an associated preserved quantity; if the theory's evenness is time invariance then the sealed quantity is called "vigor". The upkeep of accumulation and energy, the conservation of mass-energy, the protection of energy-momentum, the maintenance of invariant crowd or now frequently in a minute referred to as conservation of get-up-and-go.

The fundamental principle of physics that the total energy of an isolated system is constant despite internal changes

Conservation helps to save the world and the animals in it
I am encouraging you and everybody to:

:save energy, power down
:clean up litter
:encourage everyone to help STOP oil spills


thanks