PHYSICS/BK21 Colloquium[09.11.20]
관련링크
본문
| “Climate Change, Environment, and Science” Ø* Speaker :바카라 확률Prof. In Soo Ko [POSTECH] Ø* Place : Demonstration Lecture Hall 122,바카라 확률Postech Information Research Laboratories Ø* Date & Time : Nov,바카라 확률20(Fri)바카라 확률4:00 ~ 5:00 pm ØAbstract Since modern life style was started with many home appliances such as refrigerator and air conditioner, the바카라 확률quality바카라 확률of바카라 확률our바카라 확률life바카라 확률improved바카라 확률dramatically.바카라 확률However,바카라 확률refrigerating medium at that time was either sulfur dioxide or methyl formate, which바카라 확률is바카라 확률either바카라 확률highly toxic or flammable. To replace such dangerous gases, Chloroflourocarbon바카라 확률(CFC)바카라 확률was introduced in 1930s. Because of their stable properties, CFCs called바카라 확률Freon바카라 확률had바카라 확률been used widely from refrigerating medium to fire extinguisher to바카라 확률cheap바카라 확률solvent.바카라 확률Unknown to then scientists, Freons were migrated from atmosphere to stratosphere, or the ozone layer. With strong UV light from Sun, Chlorine atoms were freed바카라 확률from바카라 확률CFCs바카라 확률and바카라 확률they started to destroy the ozone layer seriously. To prevent clear and present danger from above, international treaty was set up and CFCs were banned to produce. This treaty is called “Montreal Protocol.” Similar situation바카라 확률is바카라 확률now바카라 확률repeating바카라 확률to바카라 확률Earth.바카라 확률It바카라 확률is바카라 확률called “Global Warming.” It is believed바카라 확률to바카라 확률be바카라 확률triggered바카라 확률by바카라 확률so바카라 확률called바카라 확률green바카라 확률house바카라 확률gases (GHG: mostly carbon dioxide and methane). Another international effort, called바카라 확률Kyoto Protocol, to reduce the concentration of such GHGs is undergoing.바카라 확률We바카라 확률will바카라 확률discuss about what is Kyoto Protocol and how much it will influence to our future. Contact Person : Prof. Ki Bong Lee (054-279-2068, kibong@postech.ac.kr) |
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