Friday, August 2, 2019
Solar Energy Essay -- essays research papers
Solar Energy Solar energy is the most ancient kind of energy found on earth, for it is as old as the sun. "Solar" means from the sun. The earth is only one of the many planets which is bathed in the sun's overflowing energy. Every second the world receives 95.8 trillion watts of powerÃ¢â¬ ¦just think about that for a minute. Think about how much power the earth just received in the time it took you to read this sentence? It is well beyond the amount of power used in one day. It has the potential to satisfy all our energy needs forever without ever having to use the pollutive fossil fuels ever again. "The problem however, does not lie in the limited source, as do fossil fuels, but in harnessing it." Every day solar energy is being used all around us. In fact, it is the indirect source of all energy and life on earth. Hopefully, with continued research, we will be in a place one day where we can directly rely on the sun for all our energy needs, and never have to use pollu tive fossil fuels, or nuclear power ever again (Cross 124). It is hard to say when solar energy was first used by humans to make life easier. As far as we know, people have always used the sun's visible range of light to see by, as well as to sit in the sun to keep warm. "Some of the first ancient cultures to use solar energy as heating were those from the deserts, and dry areas." In Egypt, Libya, and Algeria, where the sun is fiery hot in the day, but reaches freezing temperatures at night, builders discovered that thick walls of mud could solve this problem. During the day, they would absorb all the sun's energy and leave it cool as a cave inside, and at night, the walls would radiate their stored heat, and keep it fairly warm inside. These ancient people also discovered how to use the sun's energy to preserve food by either drying fruits or meats in the sun, or baking them. They found techniques to bleach cloth and cure animal hides. Whether by accident, or deliberate experimentation, these ancient cultures discovered that the sun was an incredible source of power (Bower 36). Throughout history people have experimented with the many uses of the sun's power. In the 17th century, scientists in Europe began rediscovering the sun. When a French scie... ...ar energy would be a more realistic option. Does every house need two computers, 3 TV's, a dishwasher, microwave, electric stove, video games, 3 stereos, nightlights in every hall, porch lights left on all night, lights on in every room in the house, blow dryers, toasters, electric heaters, air conditioners, electric gates and garage openers... the list goes on and on. One of the major problems that I see in our western culture is our obsession that we must each have our own. No one is willing to share anything, because it might be inconvenient. All we can think of is ourselves, no thought for future generations or the environment. We need to get a reality check. There is not enough materials or energy left in the world for this to continue to go on. Solar energy is a serious option that we should all be considering. We need to learn to act as a community, not only as individuals. I don't know what the future holds, but I can't see this working much longer. Change will have to oc cur soon, or we will exhaust all our resources and chances of life on earth.