Invention changes your life

Invention changes your life

20134837 Jungwoon Jang

 

            Do you know how many floors Soojung building has? It consists of 10 stories. When the time for class comes near, elevators are overcrowded with students. Some students fail to enter the elevator and cannot help using stairs. If human did not create elevator, many people would face uncomfortable situations. The present elevator that conveys people safely was made by Elisha Graves Otis(1811~1861). Through the history of elevator, how it invented will be introduce.

            Before Otis, there were many attempts to make luggage and people lift. The first trial was done by Archimedes in B.C236. He made an elevator in primitive form, using ropes and pulleys. In modern age, the study of elevator began in earnest. Many people tried to make elevator, however, there was a safety problem. Sometimes, the ropes were cut and people fall off the elevator. Even though elevator was convenient, many people worried about accidents.

            One man, Otis, worked in a company that made the frame of bed not drop off to the ground. After he resigned the company, he made his own elevator company. He kept studying how to make elevator safe. In 1854, he showed what he made at the international exposition. He let his attendant cut the rope when he was on the elevator. But he did not fall down to the floor. Many people who saw that were shocked. After that, people started to adapt Otis’s elevator to their buildings.

            In April 1931, Empire State building that is 381 meters and has 102 floors held ceremony for completion in New York. It adapted 67 elevators made by Otis’s company. If Otis did not invent the safe elevator, we could not imagine we go up to the high building. Also, we could not imagine people build the skyscrapers. Nowadays, there are many other companies making elevator. Also, most of buildings have elevators.

            Other inventions such as car, computer and smart phone are a part of people’s life. At present, people think elevator is nothing special. However, this is an innovation. Unless inventing elevator, people would be inconvenient very much. Furthermore, Unless Otis’s effort, people could not live this comfortable life. When people utilize many creative and innovative inventions, they should thank inventors for their endeavor.    

Let's fight over plastic bag together!

Let's fight over plastic bag together!

20134837

Jungwoon Jang

 

            When you buy items, what are usually wrapped? Most of you say it is plastic. After you took the item in the plastic packing, you would throw it away into the trash can. Then, the trash would go to landfill. And it will sleep about more than 100 years. As you know, plastic bag is much harmful to the earth. To change people not to impair the environment, all people should help to solve this problem. There are many ways to reduce or change plastic bags. Among them, three solutions will be introduced.

            To reduce the plastic bag, the authorities in the world should make the law. According to City of Seoul, one person spends around 370 plastic bags per one year. The authority should make market places and many shops change packing into paper bags. Some big marts started using paper bags, however, others still use many plastic bags. If the stores that do not follow the rule, the authority has to impose fine. Such this law can reduce the amount of using plastic bags.

             Another way to decrease the plastic, alternative material can be developed. In fact, Eco-Sand Solution, a company producing substitute, designed a bag that is made from separable starch. This material takes much shorter time to be decomposed than plastic. Also, it is not harmful to the ground. Therefore, if the bag that consists of starch is used by many people, the earth can be saved.

            The other way to become free from the plastic, participation in campaign is helpful. Regarding to campaign that insists the world prohibit using plastic bags, Zero MiKa, a campaign in Morocco, started picking up the plastic bags and told not to use the bags to people. Zero Mika publicized their aim on the SNS such as Facebook and websites. They have enlightened people to protect environment. Efforts from an individual take start great movement.

            Making sustainable environment is not difficult problem. In terms of country, laws that urge many companies and stores to substitute packaging will change people’s life. Furthermore, technology developing alternative materials keeps producing new package materials. Lastly, many actions reducing using plastic bags can make healthy earth. As all efforts from every field are gathered, the earth will become a sustainable to descendants in the future.