首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A new high-performance contact lens under development at the department for applied physics at the University of Heidelberg will
A new high-performance contact lens under development at the department for applied physics at the University of Heidelberg will
admin
2018-05-11
84
问题
A new high-performance contact lens under development at the department for applied physics at the University of Heidelberg will not only correct ordinary vision defects but will enhance normal night vision as much as five times, making people’s vision sharper than that of cats.
Bille and his team work with an optical instrument called an active mirror—a device used in astronomical telescopes to spot newly emerging stars and far distant galaxies. Connected to a wave-front sensor that tracks and measures the course of a laser beam into the eye and back, the aluminum mirror detects the deficiencies of the cornea, the transparent protective layer covering the lens of the human eye. The highly precise data from the two instruments—which, Bille hopes, will one day be found at the opticians (眼睛商) all over the world—serve as a basis for the production of completely individualized contact lenses that correct and enhance the wearer’s vision.
By day, Bille’s contact lenses will focus rays of light so accurately on the retina (视网膜) that the image of a small leaf or the outline of a far distant tree will be formed with a sharpness that surpasses that of conventional vision aids by almost half a diopter (屈光度). At night, the lenses have an even greater potential. "Because the new lens—in contrast to the already existing ones—also works when it’s dark and the pupil is wide open," says Bille, "lens wearers will be able to identify a face at a distance of 100 meters"—80 meters farther than they would normally be able to see. In his experiments night vision was enhanced by an even greater factor in semi-darkness, test subjects could see up to 15 times better than without the lenses.
Bille’s lenses are expected to reach the market in the year 30, and one tentative plan is to use the Internet to transmit information on patients’ visual defects from the optician to the manufacturer, who will then produce and mail the contact lenses within a couple of days. The physicist expects the lenses to cost about a dollar a pair, about the same as conventional one-day disposable lenses.
Individualized contact lenses are lenses designed ______.
选项
A、to work like an astronomical telescope
B、to process extremely accurate data
C、to suit the wearer’s specific needs
D、to test the wearer’s eyesight
答案
C
解析
根据第2段最后一句“作为生产完全个性化的隐形眼镜的基础。这种眼镜矫正并提高佩戴者的视力”,可知不同的人有不同的具体需求,必须测量他们的精确数据来设计,答案是C。
转载请注明原文地址:https://kaotiyun.com/show/B0T7777K
0
大学英语六级
相关试题推荐
A、Healthconditionsimprovewithtimespentwatchinghealthyprograms.B、Comedyvideoscancuremostpeopleofchronicheartatt
A、Ithasapersonalstyle.B、Itsoundsveryfamiliartoourears.C、Itisonewhosestyleyoucannotrecognize.D、Itdoesnotbe
A、Everyculturehasthesamerulesforwhatisappropriate.B、Itistraditionaltogiveluckymoneytoyoung,singlepeople.C、A
A、Itlimitsthenumberoftopicsitcancover.B、Itisanewkindofencyclopediaaboutbooks.C、Itisaveryfamousnot-for-pro
Secondhandsmokeisaccountablefor42,000deathsannuallytononsmokersintheUnitedStates,includingnearly900infants,acc
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals,butthisislar
A、Walkingaroundtheaudience.B、Smilingwhileexplainingthenotions.C、Tellingsomejokesduringthespeech.D、Sharingsomepe
A、Therearethreedivisionalheadsbelowthedeanofafaculty.B、Thedepartmentsofthesamedivisionoffersamedegrees.C、Eac
A、Thedevelopmentofonlinevideos.B、Thelimitationofnewlaws.C、ThelowerqualitiesofDVDitself.D、Theuseofhandheldvid
Smokersinthe"landofthefree"arefindingthemselvesincreasinglylessfreetopursuetheirhabit.NewYorkCityofficialsa
随机试题
2018年有财经媒体质疑康美药业存在多种经营违规行为。该报道在微博等网络平台上成为热门话题后,中国证监会迅速反应,立案调查,并发现康美药业披露的2016~2018年财务报告存在重大虚假信息。2019年5月17日,中国证监会发布的调查报告坐实康美药业财务造假
Jimissorry______soimpolitetoyourguestlastSaturday.
下列晚发型矽肺发生的条件中哪项是错误的
属于BC干粉灭火剂的是()。
根据《IJCP500》规定,在规定装运期时,如使用了“迅速”、“立即”、“尽速”或类似词句者,银行将不予置理。()
套利在建仓时可以扮演多头和空头的双重角色,在平仓时可以根据获利情况只做多头或空头角色。()
统一战线是新民主主义革命取得胜利的法宝之一,新中国成立之后,中国共产党继承了这个宝贵经验,并把统一战线组织和人民民主形式相结合建立了()。
国际社会的多样性有利于国家问的取长补短。无论社会制度是相同还是不同,都可以而且应该相互借鉴。一种文明的优点,不用强迫,别人也会学;反之,再强迫,别人也不愿学。国家之间还应积极寻找利益的汇合点,合作解决人类面临的共同问题。这些合作领域十分广泛,如可持续发展、
在(7)表示中,数值0是唯一表示的。
Whatisthewomandoinginthedialog?
最新回复
(
0
)