Учебно-методическое пособие по чтению специальной литературы для студентов 1 курса физического факультета. Дроздова И.В - 27 стр.

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27
these ideas from the microwave to the optical wavelength region. These efforts
culminated in July 1960 when Theodore H. Maiman announced the generation
of a pulse of coherent red light by means of a ruby crystal – the first laser. In
1964, Townes, Basov, and Prokhorov were jointly awarded the Noble Prize for
physics. Schawlow received a later Noble Prize, in 1981, for his development
of laser spectroscopy, but Maiman, who had produced the first actual laser,
received no prize.
5. There are several types of lasers: carbon-monoxide, color-center, excimer, gas-
dynamic, helium-cadmium, hydrogen-fluoride, deuterium-fluoride, iodine,
Raman spin-flip, and rare-gas halide laser.
Comprehension check
I. Read the article more carefully and answer the questions using the language of
science.
a) What is the smallest unit of light?
b) How does a laser work?
c) What is “stimulated emission”?
d) What do you know about laser invention?
e) What types of lasers do you know?
II. Use the list of the above questions as a plan to sum up the contents of the
article.
III. Brush up the words. Match the antonyms.
1. convex A. finite
2. infinite B. finally
3. emit C. insulator
4. continuous D. lower
5. initially E. absorb
6. conductor F. unusual
7. upper G. trough
8. ordinary H. artificial
9. crest I. concave
10. natural J. pulsed
11. charge K. on purpose
12. random L. discharge
13. presence M. complex
14. simple N. influenced
15. unaffected O. sophisticated
16. same P. output
17. crude Q. incoherent
18. input R. deliberate
19. coherent S. different
20. spontaneous T. absence 
                                          27

      these ideas from the microwave to the optical wavelength region. These efforts
      culminated in July 1960 when Theodore H. Maiman announced the generation
      of a pulse of coherent red light by means of a ruby crystal – the first laser. In
      1964, Townes, Basov, and Prokhorov were jointly awarded the Noble Prize for
      physics. Schawlow received a later Noble Prize, in 1981, for his development
      of laser spectroscopy, but Maiman, who had produced the first actual laser,
      received no prize.

5.    There are several types of lasers: carbon-monoxide, color-center, excimer, gas-
      dynamic, helium-cadmium, hydrogen-fluoride, deuterium-fluoride, iodine,
      Raman spin-flip, and rare-gas halide laser.

Comprehension check
I.   Read the article more carefully and answer the questions using the language of
     science.
a) What is the smallest unit of light?
b) How does a laser work?
c) What is “stimulated emission”?
d) What do you know about laser invention?
e) What types of lasers do you know?

II.   Use the list of the above questions as a plan to sum up the contents of the
      article.

III. Brush up the words. Match the antonyms.
1. convex                               A. finite
2. infinite                             B. finally
3. emit                                 C. insulator
4. continuous                           D. lower
5. initially                            E. absorb
6. conductor                            F. unusual
7. upper                                G. trough
8. ordinary                             H. artificial
9. crest                                I. concave
10. natural                             J. pulsed
11. charge                              K. on purpose
12. random                              L. discharge
13. presence                            M. complex
14. simple                              N. influenced
15. unaffected                          O. sophisticated
16. same                                P. output
17. crude                               Q. incoherent
18. input                               R. deliberate
19. coherent                            S. different
20. spontaneous                         T. absence

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