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A Solution to a Problem Mentioned as a Negative Social Impact
One of the problems which was noted in my area of study was that you can injure yourself when building and using the solar cooker. A solution to that problem would be that when your are building the solar cooker you need to wear googles so no material hits you in the eye. Also you need to wear gloves so you don't get injured when cutting or assembling materials on the solar cooker when building. But when you are using the the solar cooker, a essential need is to wear a sunglasses to block any sunlight or UV rays from damaging your eyesight. Also you need to wear heat protective gloves because when the sunlight and UV rays hit the solar cooker, the solar cooker begins to warm up and get hot. It releases heat which can burn your skin, therefore wearing heat protective gloves are essential. This is the solution which was created to stop an injuries which an individuals may receive when using or building the solar cooker.
A Technological Device Related to the Human Perception of Light
Contact lenses are a technological device related to the human perception of light. Contact lenses are very thin lenses which are placed right on the film of tears that cover the surface of the human eye. They are considered medical devices which can be worn to make your eyesight better, or they can be worn for cosmetic or therapeutic purposes. If light rays focus too fast in your eye and they form a focus point right in front of the retina rather than on it, you are then nearsighted. This means by wearing contact lenses, they can help you from getting nearsighted as they separate the light rays, that decrease the eye’s focusing power. Therefore, this moves the eye's focus point back to its original place to the retina, where it should be. But if you are farsighted, then light rays don’t form a focus point by the time period they arrive at the retina. Therefore, your eye doesn’t have an adequate focusing power. When you wear the contact lenses they help improve your far-sight by covering the light rays, which helps in improving the eye’s focusing power. This puts the eye’s focus point forward, onto the retina where it originally belongs. Contacts lenses are a very useful technological device related to human perception of light.
Contact lenses are also beneficial to society as they give those who have glasses/vision loss the ability to see without having to wear glasses, which is often more comfortable, and sometimes people feel more confident without glasses. However, contact lenses do take a negative toll on the environment as during their production, fossil fuels are used in the factories, and they are made of plastic. Economically though again, the contact lenses are beneficial for those who may not want to wear glasses on certain days, or special occasion but still be able to see, as they are not a permanent solution like Laser eye surgery, and are a way cheaper alternative.
Contact lenses are very effective in their job which could be to help those with vision loss, or for cosmetic/therapeutic reasons. Contacts lenses are very effective as vision correction is an essential all over the globe, and contact lenses have provided those with vision loss a comfortable and affordable way to disguise the fact they have vision loss, and/or given them the ability to change the colour of their eyes temporarily. According to the residents living in the the United States alone there are 168.5 million individuals who use some form on eye correction device whether it be glasses or contact lens. The amount of users are more than half the population of the United States of America. Nowadays, more and more individuals are using contact lens to improve their eyesight rather than glasses. This is because individuals have a wide range of active lifestyle choices to fashion purposes. Since 1991, the amount of contact lenses has rapidly increased as every year 4% of the number of contact wearers increases. Just as the amount of contact wearers has increased, the effectiveness of the contact lenses has increased throughout the years, which gave us today's very effective contact lenses.