ï»¿10 Facts about Energy
Tags: 10 facts about energy, information on electricity, 10 snippets of electricity
What is the most fundamental information on electricity? I do have my personal choice. And here are the fabulous 10 snippets of electricity that are going to impress you!
* Joule, the SI unit of energy, is accepted internationally as a standard measurement of energy. When it is necessary to measure the transfer rate of energy at any given time, power is used for this purpose and it is expressed in watts.
* Renewable energy sources refer to sun power, wind energy, hydropower, geothermal energy, ocean energy (tidal power and wave energy), bio-energy (e.g. bio-ethanol and bio-diesel). Such sources are commonly referred to as sustainable energy sources because of their common availability, which is associated with great abundance and infinite in nature.
* Non-renewable energy sources describe fossil fuels (oil, coal, natural gas) and nuclear energy. Fossil fuels are responsible for over 80% of total energy generation in today’s world. They are called non-sustainable energy sources because they can be depleted (for both fossil fuels and uranium required for nuclear energy production).
* Energy can be convertible. For example, food consumed is stored as potential energy and it is subsequently released as kinetic energy as you get engaged in physical activities.
* Matter is energy, and energy is matter. This rather Zen like statement was proven by Einstein, who basically says that matter and energy are effectively different forms of the same thing. This fabulous insight is embedded into this rather exquisitely simple equation of E=mc2, which basically tells that E (energy) is a function of mass (m) and light of speed (c). BTW c2 means the square of the speed of light.
* Scientists from Lawrence Berkeley National Laboratory, Berkeley, California and Columbia University, New York, have conclusively proven that energy from the sun is left pretty much on earth rather than being emitted back to space, hence tipping the energy balance and we get global warming as a result (well to be entirely honest, global warming is also accentuated by manâs addiction on energy, further adding to whatever absorbed by the earth).
* In physics, the common belief is that there is always a fixed amount of energy given any isolated system, but the energy is free to transform from one type to another (e.g. electrical to kinetic).
* Sustainable energy refers to a way of extracting energy without putting at risk of future generations to do so in order to meet their electrical demands. There is another definition for sustainable energy source, which describes energy that can be reliably produced over long term without unduly worry about depletion and thus minimizing the chance to induce harm to the environment.
* There is only some 33% of useful energy that can be extracted from fossil fuels in the form of electricity, the rest is simply wasted as heat.
* Energy has a significant impact on global security due to its influence on modern economies. For this reason, wars broke out in last 20 years almost had something to do with the control over energy sources.