earticle

영어

The overall experiment that is done here is focused in using the sun’s light to provide lighting for the people in the world as the cost and fossil fuels used to provide the lighting of houses are massive and expensive. Moreover the problems arise from the cutting down of the forest and little reforestation lead to the accumulation of the carbon dioxide in the atmosphere that is a greenhouse gas and can lead to global warming. Therefore there is a great effort that had been made to promote the reforestation of the forest but in my proposed experiment, there is no need to waste the land area for the reforestation of the forest but instead, trees can be planted underground. Since it is also known that the sun’s light can also heat the water if it is directed into the area correctly, my experiment used this simple idea to further decrease the usage of the electricity generated from the burning of the fossil fuels. Solar panels are installed to the surroundings of the building to enable the building to be self efficient in producing the electricity. An example of the proposed experiment that I am going to carry out are to experiment out of the different lenses that must be used to disperse the light and to concentrate the sunlight to a specific area. The equipments used are mirrors, a light source, concave mirrors and a concave and convex lens. The light source is directed to the mirrors that further reflect the light to the concave mirrors that shine the light to a black sheet of paper. It is seen that the light is a little scattered and then try putting a concave lens and determine the focal length at which the ray of light is at its highest intensity and the sire if the ray of light on the black paper. Then repeat the experiment but now using a convex lens. From the experiment we can see that the convex lens can direct the light better than the concave lens that only disperse the light. The intensity of the light can be increased by using more mirrors or using a lighter source. A further experiment can be done on the thickness of the convex lens. A thicker convex lens has a shorter focal length while a thinner convex lens have a longer focal length. Therefore it is clear that a thinner convex lens should be used for taller buildings and a thicker convex lens can be used for shorter buildings. Therefore as the light intensity can be increased, the boilers can absorb some of the heat to produce more warm water.