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
2017-02-01
38
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(眼镜商)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/TlF7777K
0
大学英语六级
相关试题推荐
Languageistheroadmapofaculture.Ittellsyouwhereitspeoplecomefromandwheretheyaregoing.AstudyoftheEnglish
Amajoringredienttotakingthepainoutofastressfuldayatworkisasupportivepartnerathome,anewstudyhas【B1】_____.
A、250citizensaretakingpartintheparade.B、Someanimalslikelionsareintheparade.C、Theparadeisgoingalongtworoute
Dohalfofallmarriagesreallyendindivorce?It’sprobablythemostoften【B1】_____statisticaboutmodernlove.Butinanupbe
A、Shewillhaveadiscussionwiththosewhowanttobevolunteers.B、Shewillworkwithtrainingagenciestoimproveteachingsk
A、Inastudentcenter.B、Inaprofessor’soffice.C、Inarestaurant.D、Inadoctor’soffice.B校园生活类,场景推断题。女士需要男士在计划书导师签名处签名,男士表示
Knowledgemaybeacquiredthroughconversation,watchingtelevisionortravelling,butthedeepestandmostconsistentwayisth
Fertilizerusehasexploded,overloadingplantsworldwide,likelyalteringecosystemsfordecadestocenturies,scientistsrepor
FrustratedwithdelaysinSacramento,BayAreaofficialssaidThursdaytheyplannedtotakemattersintotheirownhandstoregu
Smokersinthe"landofthefree"arefindingthemselvesincreasinglylessfreetopursuetheirhabit.NewYorkCityofficialsa
随机试题
患者,女性,30岁。腹部外伤2小时,疑有内脏损伤。护理措施不包括
可以诱发鱼、禽、大鼠和猴子等多种动物肝癌的真菌毒素是()。
某建筑内的消火栓箱内配备SN65消火栓、25m长的衬胶水龙带和喷嘴直径为19mm的水枪,若水枪充实水柱长度为13m,水枪出流量为5.5L/s,水枪水流特性系数为1.577,则消火栓栓口的压力应为()。
依据《中华人民共和国草原法》,应当被划为基本草原的是()。
预警系统主要由()两部分组成。
近期内拟建设的地区编制修建性详细规划地域范围一般应在()。
确定施工进度控制目标的主要依据有()等。
A、 B、 C、 D、 B第一列的直线数分别是8、7、6,第二列的直线数分别是3、4、5,第三列的直线数分别是2、1、(0),所以选择B。
要在窗体中显示当前系统日期和时间:则应将相应文本框的控件来源属性设置为
つくえの(うえ)にえんぴつが(はっぽん)あります。
最新回复
(
0
)