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4.Although the principle of operation is the same for both lasers and
masers, the laser is more suitable for generation of energy.
5.A laser beam, because of its highly directional nature, can be focused
to achieve very high power densities.
IV. Прочтите и устно переведите на русский язык с 1-го по 5- й
абзацы текста.
LASERS
1.Laser is an acronym formed from light amplification by stimulated
emission of radiation. Lasers generate energy by using the electrons bound
to the atoms. Lasers can be considered as generators of energy that operate
in a very high frequency region that use the properties of bound electrons
rather than free electrons.
2.The discovery of the lasers opens up a completely new frequency
territory to be explored. Besides its operating frequency other features of the
laser make it a field where many scientists and engineers are working on
ideas and applications that just could not be previously attempted. The
thought of completely new applications, along with improvements in other
applications, is what has generated the excitement over the lasers.
3.Experimenis have shown that the laser can be used effectively for
welding. By passing the laser beam through a lens system an extremely high
energy density can be focused in a very small area. The laser appears to be
most useful for spot welding, with (he electronic beam welder. The
application of the laser to metal working has made possible precision
welding and cutting that previously was performed only by complicated
electron beam devices. Eventually the laser will be safer, cheaper, quicker
and easier.
4.The laser also has some radar application. An interesting application of
lasers appears to be in the field of aviation. A serious hazard to flight is clear air
turbulence (CAT). Small panicles of dust and ice crystals are concentrated in the
turbulent clear air. They are too small to reflect a normal radar wave, but they
would reflect the much shorter wave length of a laser beam. Thus an airplane
equipped with a laser radar could detect CAT from a safe distance.
5.The powerful beam emitted by the laser shows promise in many
medical applications. Exploration is being conducted in such fields as tooth
drilling, eye surgery, cancer treatment. In most of these cases the laser is like
an optical knife which would be more accurate, less painful, and faster than
the scalpel.
Notes
An acronym- (лингв.) акроним
Light amplification by stimulated emission of radiation- усиление
света в результате вынужденного излучения
V. Прочтите 4- и абзац текста и вопрос к нему. Из приведенных
ниже вариантов укажите номер, содержащий ответ на данный вопрос.
Why should an airplane be equipped with a laser radar?
1 .to detect CAT from a safe distance
2.lo struggle with air wave
3.to make the flight easier
ВАРИАНТ 5
I. Перепишите предложения и переведите их на русский язык,
обращая внимание на различные значения глаголов should, would.
1. The application of digital computers should include all forms of
automatic control in science and industry.
2.If the computers had been introduced in human activity in the I9
lh
century the technological processes would have been developed quicker.
3.Without computers further advance in industry would be impossible.
П. Перепишите предложения и переведите их на русский язык,
принимая во внимание, что инфинитивные и причастные обороты
coответствуют придаточным предложениям.
1.Machine transaction is known to have become another field of
computers use.
2.The computer's electronic memory recorded all the operator's
commands, the picture of deviations from the required parameters being
produced.
З.То prepare teaching programmes linguistic materials should be
computered for teaching purposes.
4.Having worked out computers, scientists solved many important
5.When translating a text the translation done by a computer.
4.Although the principle of operation is the same for both lasers and an optical knife which would be more accurate, less painful, and faster than
masers, the laser is more suitable for generation of energy. the scalpel.
5.A laser beam, because of its highly directional nature, can be focused
to achieve very high power densities. Notes
An acronym- (лингв.) акроним
IV. Прочтите и устно переведите на русский язык с 1-го по 5- й Light amplification by stimulated emission of radiation- усиление
абзацы текста. света в результате вынужденного излучения
LASERS V. Прочтите 4- и абзац текста и вопрос к нему. Из приведенных
1.Laser is an acronym formed from light amplification by stimulated ниже вариантов укажите номер, содержащий ответ на данный вопрос.
emission of radiation. Lasers generate energy by using the electrons bound Why should an airplane be equipped with a laser radar?
to the atoms. Lasers can be considered as generators of energy that operate 1 .to detect CAT from a safe distance
in a very high frequency region that use the properties of bound electrons 2.lo struggle with air wave
rather than free electrons. 3.to make the flight easier
2.The discovery of the lasers opens up a completely new frequency
territory to be explored. Besides its operating frequency other features of the ВАРИАНТ 5
laser make it a field where many scientists and engineers are working on
ideas and applications that just could not be previously attempted. The I. Перепишите предложения и переведите их на русский язык,
thought of completely new applications, along with improvements in other обращая внимание на различные значения глаголов should, would.
applications, is what has generated the excitement over the lasers. 1. The application of digital computers should include all forms of
3.Experimenis have shown that the laser can be used effectively for automatic control in science and industry.
welding. By passing the laser beam through a lens system an extremely high 2.If the computers had been introduced in human activity in the I9lh
energy density can be focused in a very small area. The laser appears to be century the technological processes would have been developed quicker.
most useful for spot welding, with (he electronic beam welder. The 3.Without computers further advance in industry would be impossible.
application of the laser to metal working has made possible precision
welding and cutting that previously was performed only by complicated П. Перепишите предложения и переведите их на русский язык,
electron beam devices. Eventually the laser will be safer, cheaper, quicker принимая во внимание, что инфинитивные и причастные обороты
and easier. coответствуют придаточным предложениям.
4.The laser also has some radar application. An interesting application of 1.Machine transaction is known to have become another field of
lasers appears to be in the field of aviation. A serious hazard to flight is clear air computers use.
turbulence (CAT). Small panicles of dust and ice crystals are concentrated in the 2.The computer's electronic memory recorded all the operator's
turbulent clear air. They are too small to reflect a normal radar wave, but they commands, the picture of deviations from the required parameters being
would reflect the much shorter wave length of a laser beam. Thus an airplane produced.
equipped with a laser radar could detect CAT from a safe distance. З.То prepare teaching programmes linguistic materials should be
5.The powerful beam emitted by the laser shows promise in many computered for teaching purposes.
medical applications. Exploration is being conducted in such fields as tooth 4.Having worked out computers, scientists solved many important
drilling, eye surgery, cancer treatment. In most of these cases the laser is like 5.When translating a text the translation done by a computer.
