Smart Window Windows not only let light in to cut down an electricity use for lighting, but the light coming through the window also provides heat. However, windows are not something people typically associate with being a cutting edge1 technology. Researchers are now working on new technologies that enable a window to quickly change from clear to dark and anywhere in between with a flip of a switch2. Yet, windows are the weak link in a building when it comes to energy and temperature control. In the winter, cold air leaks in. When its hot and sunny, sunlight streams in. All of this sunlight carries lots of heat and energy. And all of this extra heat forces people to turn on their air conditioners. Producing blasts of cold air, which can feel so refreshing, actually suck up enormous amounts of electricity in buildings around the world. Electrochromic windows use electricity to change color. For example, a sheet of glass coated with thin layers of chemical compound such as tungsten oxide works a bit like a battery. Tungsten oxide is clear when an electric charge is applied and dark when the charge is removed, that is, when the amount of voltage is decreased, the window darkens until its completely dark after all electricity is taken away. So applying a voltage determines whether the window looks clear or dark. 词汇: air conditioner 空调 jolt n. v. 震摇,颠簸,晃动 glaze v. 装玻璃,上釉 voltage n. 电压 注释: 2. anywhere in between with a flip of a switch:就在开或关的一霎那。 练习: A) Windows can change from clear to dark to save energy. C) Windows help to save energy by providing heat. 2. When are windows the weak link in a building? B) In the hot summer. D) Both A and B. A) Windows that are coated. C) Windows the color of which can be changed. 4. To make electrochromic windows change color, what is applied to the window glass? B) Tungsten oxide. D) A voltage. A) The buildings will look different. C) We may not need air conditioners any more. 答案与解析: 借助文章中的用词特点或文章开头的语句进一步了解这篇文章的主题: It took us a long time to figure out what a window really is, says Claes Granqvist. Hes a professor of solid-state physics at Uppsala University in Sweden3. Its contact with the outside world. You have to have visual contact with the surrounding world to feel well. So, windows and natural light are important for improving the way people feel when theyre stuck indoors. Windows have been a major focus of energy research for a long time. Over the years, scientists have come up with a variety of strategies for coating, glazing, and layering windows to make them more energy efficient. Smart windows go a step further. They use chromogenic technologies which involve changes of color. One important feature that makes a smart window so smart is that it has a sort of memory. All it takes is a small jolt of voltage to turn the window from one state to the other. Then, it stays that way. Transitions take anywhere from 10 seconds to a few minutes, depending on the size of the window. The development of smart windows could mean that massive air conditioning systems may no longer need. In the future, Granqvist says, our buildings may look different. 2.直接解题: A) Windows can change from clear to dark to save energy. C) Windows help to save energy by providing heat.联系)the outside world.
国际劳动妇女节 International Womens Day
珍惜时间 Cherish Time
少儿英语故事The New Neighbor
关于尝试新事物的优点
少儿双语故事There Is No Magic Marker
对生活的感悟英语作文
荒谬的“世界末日”说
香港回归15周年 The 15th Anniversary of HKSARs Return to Motherland
英语合同用词特点1
关于季节的英文诗
顽强李娜 Strong Li Na
关于好学生应该具有优秀的品质
双语故事:When Do You Eat Lunch
我最喜欢的电影 My Favorite Movie
艰难的减肥过程The Long Way to Lose Weight
商务文书常用结束语
关于中美高中教育
关于荒岛的英语作文
一年四季 Four Seasons
我的日记My Diary
我的宠物猫My Pet Cat
会议通知 Notice
关于学习新单词的最好的方法
关于我的第一位化学老师
我的爱好——唱歌 My Hobby – Singing
关于贷款的申请信
我最喜欢的科目
游泳是我最喜欢的运动Swimming is My Favorite Sport
课后活动 Activities in Spare Time
一所幼儿园 A Kindergarten
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |