雅思阅读真题+题目+答案:Thomas Harriot-the discovery of refraction

来源:原创作品 | 2020-03-1632


雅思阅读真题+题目+答案:Thomas Harriot-the discovery of refraction

A When light travels from one medium to another^ it generally bends7 or refracts. The law of refraction gives us a way of predicting the amount of bending. Refraction has many applications in optics and technology. A prism uses refraction to form an image of an object for many different purposes7 such as magnification. A prism uses refraction to form colors from an incident beam of light Refraction also plays an important role in the information of a mirage and other illusions

B A contemporary of Shakespeare. Elizabeth I. johannes Kepler and Galilei Galileo.Thomas Harriot (1560-1621) was in English scientist and mathematician. His principal biographer. J. W. Shirley, was quoted saying that in his time he was "England’s most profound mathematician, most imaginative amd methodical experimental scientist ".As a mathematician, he contributed to the development of algebra, and introduced the symbols of *>" and M<" for "more than^1 and ^less than f,. He also studied navigation and astronomy. On September 17.1607. Harriot observed a comet later Identified as Hailey-s. With his painstaking observations, later workers were able to compute the comet's oibit. Harriot was also the first to use a telescope to observe the heavens in England. He made sketches of the moon in 1609. and then developed lenses of increasing magnification. By April 1611.he had developed a lens with a magnification of 32. Between October 17, 1610 and February 26, 1612, he observed the moons of Jupiter, which had already discovered by Galileo. While observing Jupiter, s moons? he made a discovery of his own: sunspots, which he viewed 199 times between December 8, 1610 and January 18, 1613. These observations allowed him to figure out the sun?s period of rotation.

C He was also an early English explorer of North America. He was a friend of the English courtier and explorer Sir Walter Raleigh, and travelled to Virginia as a scientific observer on a colonising expedition in 1585. On June 30, 1585, his ship anchored at Roanoke Island, off Virginia. On shore, Harriot observed the topography, flora and fauna, made many drawings and maps, and met the native people who spoke a language the English called Algonquian. Harriot worked out a phonetic transcription of the native peopled speech sounds and began to learn the language, which enabled him to converse to some extent with other natives the English encountered. Harriot wrote his report for Raleigh and published it as A Briefe and True Report of the New Found Land of Virginia in 1588. Raleigh gave Harriot his own estate in Ireland, and Harriot began a survey of Raleigh^ Irish holdings. He also undertook a study of ballistics and ship design for Raleigh in advance of the Spanish Armada’s arrival.

D Harriot kept regular correspondence with other scientists and mathematicians, especially in England but also in mainland Europe, notably with Johannes Kepler. About twenty years before Snell’s discovery, Johannes Kepler (1571-1630) had also looked for the law of refraction, but used the early data of Ptolemy. Unfortunately, Ptolemy^ data was in error, so Kepler could obtain only an approximation which he published in 1604. Kepler later tried to obtain additional experimental results on refraction, and corresponded with Thomas Harriot from 1606 to 1609 since Kepler had heard Harriot had carried out some detailed experiments. In 1606, Harriot sent Kepler some tables of refraction data for different materials at a constant incident angle, but didn^t provide enough detail for the data to be very useful. Kepler requested further information, but Harriot was not forthcoming, and it appears that Kepler eventually gave up the correspondence, fmstrated with Harriott reluctance.

E experiments on refraction in the 1590sr and from his notes it is clear that he had discovered the sine law at least as early as 1602. Around 1606. he had studied dispersion in prisms^ predating Newton by around 60 years^ measured the refractive indices of different liquids placed in a hollow glass prism7 studied refraction in crystal spheres^ and correctly understood refraction in the rainbow before Descartes.

F As his studies of refraction. Harriots discoveries in other fields were largely unpublished during his lifetime, and until this century. Harriot was known onl}^ for an account of his travels in Virginia published in 1588. and for a treatise on algebra published posthumously in 1631. The reason why Harriot kept his results unpublished is unclear. Harriot wrote to Kepler that poor health prevented him from providing more informatiorv but it is also possible that he was afraid of the seventeenth century's English religious establishment which was suspicious of the work carried out by mathematicians and scientists.

G After the discovery of sunspots. Harriot's scientific work dwindled. On July 2 of 1621. Harriot died in London. But his story did not end with his death. Recent research 9 has revealed his wide range of interests and his genuinely original discoveries.What some writers describe as his 'thousands upon thousands of sheets of mathematics and of scientific observations^ appeared to be lost until 1784 when they were found in Henry Percy's country estate by one of Percy's descendants. She gave them to Franz Xaver Zach. her husband's son s tutor. Zach eventually put some of the papers in the hands of the Oxford University Press7 but much work was required to prepare them for publication^ and it has never been done. Scholars have begun to study themr and an appreciation of Harriots contribution started to grow in the second half of the twentieth century. Harriot's study of refraction is but one example where his work overlapped with independent studies carried out by others in Europe, but in any historical treatment of optics his contribution rightfully deserves to be acknowledged.


Questions 27-31

Reading Passage has 7 paragraphs A-G. Choose the correct heading for paragraphs B-E and G from the list of headings below. Write the correct number, i-x, in boxes 27-31 on your answer sheet.

List of Headings

i A misunderstanding in the history of science

ii Thomas Harriot’s biography

iii Unknown reasons for his unpublished works

iv Harriott 1588 publication on North America studies

v Expedition to the New World vi Reluctant cooperation with Kepler

vii Belated appreciation of Harriot’s contribution

viii Religious pressures keeping him from publishing

ix Correspondence with Kepler

x Interests and researches into multiple fields of study

27 Paragraph B

28 Paragraph C

29 Paragraph D

30 Paragraph E

31 Paragraph G

Questions 32-36

Answer the questions below using NO MORE THAN THREE WORDS from the passage for each answer. Write your answers in boxes 32-36 on your answer sheet.

Various modem applications base on an image produced by lens uses refraction , such as 32________ . And a spectrum of colors from a beam of light can be produced with 33_______. Harriot travelled to Virginia and mainly did research which focused on two subjects of American 34______ . After, he also enter upon a study of flight dynamics and 35_______ . for one of his friends much ahead of major European competitor. He undertook extensive other studies which were only noted down personally yet predated than many other great scientists. One result, for example, corrected the misconception about the idea of 36_________ .

Questions 37-40

Look at the following researchers (listed A-D) and findings. Match each researcher with the correct finding. Write your answers in boxes 37-40 on your answer sheet. NB You may use any researcher more than once.

A Willobrord Snell

B Johannes Kepler

C Ptolemy

D Galileo E Harriot

37 discovered the moons of Jupiter

38 distracted experimental calculation on refraction

39 the discovery of sunspots

40 the person whose name the sin law was attributed to

雅思阅读真题答案: 27 x 28 v 29 ix 30iii 31 vii 32 magnification 33 a prism 34 land and language 35 ship design 36 (the)rainbow refraction/refraction in rainbow 37D 38B 39 E 40A

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