首页
登录
职称英语
A new high-performance contact lens under development at the department for
A new high-performance contact lens under development at the department for
游客
2024-04-03
35
管理
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. [br] What do the two instruments mentioned in the second paragraph refer to?
选项
A、The astronomical telescope and the wave-front sensor.
B、The aluminum mirror and the wave-front sensor.
C、The aluminum mirror and the laser beam.
D、The active mirror and the contact lens.
答案
B
解析
第2段第2句提到“铝镜和波前传感器连接在一起。前者用来测量角膜的缺陷,角膜是在人眼睛晶状体外的起保护作用的一层透明物体;后者是追踪测量激光束往返人眼的过程。由此可知,这两种仪器指的是铝镜和波前传感器,答案为B。
转载请注明原文地址:https://tihaiku.com/zcyy/3539169.html
相关试题推荐
Indepartmentstoresandclosetsallovertheworld,theyarewaiting.Their
Indepartmentstoresandclosetsallovertheworld,theyarewaiting.Their
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Anewhigh-performancecontactlensunderdevelopmentatthedepartmentfor
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
随机试题
Someunionofficialshavesuggestedthatwomenshouldreturnhomebecause______
FlatswerealmostunknowninBritainuntilthe1850swhentheyweredevelope
Inthepastfewyears,parentshavepaidmoreattentiontotheneedsoftheir
①2017年8月4日,中国科学技术馆与百度公司通过移动大巴方式将人工智能各项应用
溶胶剂与溶液剂之间最大的不同是A.溶剂种类 B.药物分散形式 C.药物分子大
男性,24岁。四肢麻木、无力、酸痛,伴吞咽、发音困难15小时,排尿无障碍。检查:
在加涅的学习层次分类中,刺激一反应学习属于桑代克和斯金纳的操作性{}。
下面哪项条件会造成烟气抬升高度的减小?( )A.风速增加,排气速率增加,烟气温
在城市规划调查中,社会环境的调查不包括()。A.人口的年龄结构、自然变动、
患者,男,35岁。素体壮实,3日未解大便,腹胀痛,日晡发热,舌红苔黄,脉大有力。
最新回复
(
0
)