A New Sound

After the lecture on lighting, I wondered about other electromagnetic waves our bodies are constantly submerged in that we can readily detect. The first one that came to mind was sound. Similar to light, sound is another type of radiation that our senses are able to pick up. It is also a natural by product of when we talk, when two objects come into contact with one another, basically whenever air is disturbed (which is almost all the time). There are very few occasions where I find myself in complete silence, even when I sleep I can still hear the wind and cars passing by. Although sound waves contain much less energy than light waves, we shouldn't ignore the fact that it is still a form of energy that constantly surrounds us. A source of energy that we can potentially harness on a smaller scale. This article from Science Daily explains how turning excess heat into electricity by using sound is an efficient way to recycle waste heat.

To see article, please click Sound 

Energy is all around us and in vast amounts, the only problem is tapping into these sources. Opening our eyes and ears to new solutions often found in the most obvious places is necessary to move forward in our search for usable energy. Diversifying and expanding our energy resources will also result in more stable and resilient energy supplies for future generations to come.