"ENERGY.XD"

              In physics energy is an indirectly observed quantity. It is often understood as the ability physical system has to do work on other physical systems. Since work is defined as force acting through a distance (a length of space), energy is always equivalent to the ability to exert pulls or pushes against the basic forces of nature, along a path of a certain length.

"What is the role of of energy in human society?!" 

1.ECONOMICS

•  The use of renewable energy is extremely important for the future development of our globe.As energy demands increase, we cannot afford to increase the capacity of fossil fuel usage. The reserves of fossil fuels are decreasing on a constant basis, and no matter how slow this process may be, we need to look into alternative ways to generate energy.

2.ENVIRONMENT

•  Not only will the use of renewable & natural energy sources help to decrease our dependency on reserves, the process of generating renewable energy is much more friendly to the environment.
• The reduction of fossil fuel usage will also aid the environment and landscape around heavy industry developments, allowing wildlife to return to many sites across the globe.
  

3.ICT

•  Most folks think that computers use a lot more energy than they actually do and that usage levels are growing at incredible rates. Those incorrect assumptions mask an important truth: IT has beneficial environmental effects that vastly outweigh the direct environmental impact of the electricity consumed. 

4.HOME

• A home energy rating can be used to gauge the current energy efficiency of a home or estimate the efficiency of a home that is being constructed or improved. A home energy rating of a home prior to construction or improvement is called a “projected rating.” A home energy rating that is used to determine a home’s current efficiency is referred to as a “confirmed rating.”

5.TRANSPORTATION

• Transportation and energy is a start a standard physics application where giving momentum to masses requires a proportional amount of energy. The relationship between transport and energy is a direct one, but subject to different interpretations since it concerns different transport modes each having a specific performance level. There is often a compromise between speed and energy consumption, related to the desired economic returns.

'iLOVEphysics"

  "alLy says "
Physics is often described as the study of matter and energy. It is concerned with how matter and energy relate to each other, and how they affect each other over time and through space. 

• Black and totally shine. This is just a simple shoes of an ordinary student but behind this fact, it was a product under the Friction Law.

• The washing machine which helps us to save time  in doing the laundry is a product of the technological use of other Physical Law.

• The can opener we take for granted is actually a lever which make us exert less effort to open a can. This is for natural law.