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
2019-06-23
40
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.
The new contact lens is meant for _____.
选项
A、those with vision defects
B、astronomical observations
C、the night blind
D、optical experiments
答案
A
解析
第1段提到“新的高性能隐形眼镜不仅可以纠正普通的视力缺陷,还可以把正常的夜间视力提高5倍”,可得知这种眼镜是为有视力缺陷的人设计的,因此选择A。
转载请注明原文地址:https://kaotiyun.com/show/CVX7777K
0
大学英语六级
相关试题推荐
Childrenwholivenearamainroadareingreaterdangerofcatchingpneumonia(肺炎)becausepollutionfrompassingtrafficdamag
Childrenwholivenearamainroadareingreaterdangerofcatchingpneumonia(肺炎)becausepollutionfrompassingtrafficdamag
A、Receiveanoperationtocureherheartattack.B、Competewiththosebigpotatoesinsportsfield.C、Jumpoveranewheightof
A、Aladywithaveryslimfigure.B、Asportsplayerwithoutlegs.C、Aplayercompetinginaranningrace.D、Aladyholdingaone
A、Becausetheyareeffectiveagainstmostdiseases.B、Becausetheeffectsofantibioticsareexaggerated.C、Becausedoctorstend
A、TOEFListhemostgloballyusedlanguageassessmentexam.B、TOEFLscoresmatteralotingettingfinancialaids.C、AllAmerica
A、Hewelcomesthemfortakingawaypartofthework.B、Hehatesthemforhavingnoconsciousness.C、Helikesthembecausetheya
A、TOEFListhemostgloballyusedlanguageassessmentexam.B、TOEFLscoresmatteralotingettingfinancialaids.C、AllAmerica
A、Improvementsofchildren’sachievementsinschoolcanbemade.B、Children’sheathcanbeimproved.C、Theschoolneedstocare
A、Newsaboutafriend.B、Informationtheyreadinanewspaper.C、Anarticleontheeconomy.D、Aclassroomlecture.A推断题。根据第一句的Di
随机试题
“仁者乐山、智者乐水”。在旅游活动中,有人喜欢奇山异水,有人喜欢人文古迹;有人喜欢安全系数较大的旅游项目,有人喜欢冒险性较强的旅游项目,这说明旅游知觉具有()。
乳糖操纵子中的I基因编码产物是()(2000年)
X线机中设置容量保护电路的目的是
(2013年)公司为员工提供的免费工作午餐属于()。
经济全球化的微观载体是()。
“正能量”本是物理学中的专业用词,但近年来却十分流行,常被用来赞颂一些好的人和事。对此。请谈一下你的看法。
[*]
[*]
下列关于嵌入式系统硬件抽象层的描述中,正确的是()。
WhydoesJaneborrowTom’syogabook?
最新回复
(
0
)