Static electricity or ESDis an electrical charge at rest. This is created by an imbalance of electrons that stay on a specific surface, or in the environmental air. The imbalance of electrons is caused by absence or surplus of electrons. This creates an electrical field that is capable of in...
Active solar power uses arrays of photovoltaic cells to convert sunlight directly into electricity, and it has traditionally been a prohibitively expensive technology. The benefits of residential solar power are obvious: Energy from the sun is endless (at least for the next 5 billion years, give ...
Also, some energy sources, such as the coal-burning power plants that generate nearly half of U.S. electricity, pour out carbon dioxide, which threatens to change Earth's climate in dangerous ways [source: Dosomething.org]. Energy vampires drain pocketbooks as well. In 2011, each American ...
When the switch is flipped to the on position, electricity can flow from the bottom terminal, through the electromagnet, up to the moving contact, across to the stationary contact, and out to the upper terminal. The electricity magnetizes the electromagnet. Increasing current boosts the ...
Coal was synonymous with the state in GDR times. The GDR made the region a coal region. Coal had a majestic and omnipresent effect. The GDR needed electricity, the GDR needed heat, and Lusatia was the only region where that could come from. The awareness of having been the energy region...
The U.S. energy transition that began during the nineteenth century—a shift from biomass to coal, which was jump-started by technological improvements to the steam engine—took nearly 100 years. If the world is to avoid the worst impacts of climate change, it must tra...
For example, if your local utility burns oil or coal to generate electricity, any efforts you make to reduce usage translates into cleaner air. The Environmental Protection Agency (EPA) encourages local governments to “promote further energy use reductions in the residential sector by promoting ...
The European nation’s energy revolution has made it a leader in replacing nukes and fossil fuels with wind and solar technology.
Coal and oil plants work much as I've shown in the artwork above, burning fuel with oxygen to release heat energy, which boils water and drives a steam turbine. This basic design is sometimes called a simple cycle. Photo: An excellent cutaway model of a steam turbine and electricity ...
Even today, in full sized power stations this simple invention is still used and works very effectively. These power stations create mass amounts of energy to turn the turbines. Most of the time the energy is made from the heat, for example when coal is burned. More environmentally friendly...