CFL/LED lamps are accepted the world over as energy efficeint, and powersaving tools, with a pleasent effect on Global Warming. This blog is a collection of articles by various experts from various sources available on the subject. Any coments, suggestions and critical reviews are most welcome.Pl click on BLOG ARCHIVE for all previous articles
Energy is in everything. We use energy for everything we do, from making a jump shot to baking cookies to sending astronauts into space.
There are two types of energy:
Stored (potential) energy
Working (kinetic) energy
For example, the food you eat contains chemical energy, and your body stores this energy until you use it when you work or play.
Energy Sources Can be Categorized As Renewable or Nonrenewable
When we use electricity in our home, the electrical power was probably generated by burning coal, by a nuclear reaction, or by a hydroelectric plant at a dam. Therefore, coal, nuclear and hydro are called energy sources. When we fill up a gas tank, the source might be petroleum or ethanol made by growing and processing corn.
Energy sources are divided into two groups — renewable (an energy source that can be easily replenished) and nonrenewable (an energy source that we are using up and cannot recreate). Renewable and nonrenewable energy sources can be used to produce secondary energy sources including electricity and hydrogen.
Renewable energy sources include:
Solar energy from the sun, which can be turned into electricity and heat
Geothermal energy from heat inside the Earth
Biomass from plants, which includes firewood from trees, ethanol from corn, and biodiesel from vegetable oil