SSS 2012-03-15
时间：2019-01-08 作者：英语课 分类：Scientific American(三)月
SSS 2012-03-15
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- 1 SSS 2012-03-15
英语课
This is Scientific American 60 Second Science, I am Karen Hopkin, this will just take a minute.
Every year, about 10 million tons of paper winds up in American landfills and incinerators, which is not only wasteful 1 but adds CO2 to the atmosphere. Recycling helps, but even that material has to be repulped and paper-ized before you can use it to print out that recipe you’ll never make. But what if you could wipe the page clean and use it again?
Light amplification 2 by stimulated 3 emission 4 of radiation to the rescue. A new study shows that laser light can erase 5 the toner from a piece of printed paper. The approach appears in the Proceedings 6 of the Royal Society A.
Taking a page from the art-restoration handbook, scientists sampled a variety of light sources to see if any could be used to strip the ink from laser-printed documents without damaging or discoloring the paper. UV and infrared 7 were too harsh. But a bright green laser applied 8 in 4 nanosecond pulses vaporizes the print, leaving paper that looks as good as new.
Such unprinters will probably run about 30,000 bucks 9, so they probably won’t catch on for home use. But people in the recycling world might find that the green laser fits the bill—for making paper that’s really green.
Thanks for the minute, for Scientific American 60 Second Science, I am Karen Hopkin~
adj.（造成）浪费的，挥霍的
- It is a shame to be so wasteful.这样浪费太可惜了。
- Duties have been reassigned to avoid wasteful duplication of work.为避免重复劳动浪费资源，任务已经重新分派。
n.扩大，发挥
- The voice of despair may be weak and need amplification.绝望的呼声可能很微弱，需要扩大。
- Some of them require further amplification.其中有些内容需进一步详细阐明。
a.刺激的
- The exhibition has stimulated interest in her work. 展览增进了人们对她作品的兴趣。
- The award has stimulated her into working still harder. 奖金促使她更加努力地工作。
n.发出物，散发物；发出，散发
- Rigorous measures will be taken to reduce the total pollutant emission.采取严格有力措施，降低污染物排放总量。
- Finally,the way to effectively control particulate emission is pointed out.最后，指出有效降低颗粒排放的方向。
v.擦掉；消除某事物的痕迹
- He tried to erase the idea from his mind.他试图从头脑中抹掉这个想法。
- Please erase my name from the list.请把我的名字从名单上擦去。
n.进程，过程，议程；诉讼(程序)；公报
- He was released on bail pending committal proceedings. 他交保获释正在候审。
- to initiate legal proceedings against sb 对某人提起诉讼
adj./n.红外线(的)
- Infrared is widely used in industry and medical science.红外线广泛应用于工业和医学科学。
- Infrared radiation has wavelengths longer than those of visible light.红外辐射的波长比可见光的波长长。
adj.应用的；v.应用，适用
- She plans to take a course in applied linguistics.她打算学习应用语言学课程。
- This cream is best applied to the face at night.这种乳霜最好晚上擦脸用。