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Text 10A Laser
I. Find in the text equivalents to the phrases and sentences:
· Before the end of the century – ‘ before the turn of the century’
· The name means…
· Laser made one of people’s oldest fantasies come true.
· No substances can resist laser.
· It seems impossible that laser can have so many different uses.
· To make the task possible…
· There are a lot of problems on the way
· The use in communication can be the future of laser.
· A single laser beam can replace all other means of communication.
· Technological difficulties prevent these projects from realization.
II. Make all possible word combinations with these words
come | aboard | a dream |
conduct | at | a problem |
encode | into | a project |
encounter | to | an experiment |
fulfil |
| demands |
involve |
| difficulties |
meet |
| effect |
overcome |
| great cost |
place |
| magic |
put |
| reality |
realize |
| satellites |
solve |
| signals |
suggest |
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work |
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III. Complete the gaps with pairs of words, which have the same form. Pay attention to the forms. (There are two pairs that you don’t need).
Place, v – place, n form, v – form, n focus, v – focus, n | turn, v – turn, n estimate, v – estimate, n | centre, v – centre,n use, v – use, n
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1. Before you start a project, you should … how much money you can spend. – According to my ….. the journey won’t take you long.
2. The ecological problems are now in the … of attention. – To make a laser beam more intensive you should … it.
3. Laser can … lead into liquid. – She was born around the … of the century.
4. The scientists are trying to find a new … for nuclear waste. – in future it will be possible to … lasers to transmit radio and telephone messages.
5. There are plans to … laser installations on the space objects. – Russia lost its … among the leading countries of the world.
IV. Complete the gaps in the table with the related words.
Action (-y, -) | Process or result (-(c)ation, -ion, -ment) | Doer (-er/or, -ist) | Attribute (-ed, -ive) |
? | ? | amplifier | ? |
conduct | ? | ? | ? |
? | suggestion | -- | -- |
? | discovery | -- | -- |
-- | -- | ? | physical |
? | stimulation | -- | ? |
require | ? | -- | ? |
intensify | ? | ? | ? |
? | transmission | ? | -- |
transform | ? | ? | ? |
V. Complete the gaps with one the forms of the word in brackets.
0. No material on the earth can withstand laser …... (treat) – treatment
1. To combine laser and thermonuclear reaction would be the …….. of every physicist’s dream. (to fulfil)
2. We haven’t yet managed to find a …….. source of energy. (to limit)
3. The laboratory is now working at a new kind of ……..-……… materials. (to resist heat)
4. What ……. of laser in our everyday life do you know? (to apply)
5. These experiments are conducted with the help of a laser ………. (to install)
6. The …….. temperature is 900º C. (to require)
7. Most fantasies of the humankind has already come to ……. (real)
8. A laser beam can ….. any substance on the earth. (vapor)
9. The …… of the laser beam can be varied. (intense)
VI. Complete the following sentences
1. LASER stands for …
2. The main characteristic of laser is that it can …
3. Laser can be used in controlled thermonuclear reactions because...
4. Communication is one of the most probable uses of laser because…
5. Laser may be used in outer space in order to…
Laser
applications of laser in industry and science |
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controlled thermonuclear reaction |
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fulfilment of the mankind’s dream |
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hardest and most heat-resistant materials |
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intensive beam of light of a pure single colour |
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laser installation |
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laser treatment |
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light amplification by stimulated emission of radiation |
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light capacity |
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long distance communication |
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power plant |
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practically limitless source of energy |
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sophisticated invention |
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technological tool |
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according to current estimates |
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in practice |
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in a fraction of a second |
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the turn of the century |
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to be focused |
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to carry messages |
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to combine the two big technological discoveries |
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to come to reality |
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to conduct physical experiments |
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to encode complex signals |
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to encounter difficulties |
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to heat the fuel to the required temperature |
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to involve great cost |
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to meet demands |
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to overcome difficulties |
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to place aboard earth satellites |
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to put a project into effect |
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to realize a project |
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to represent |
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to stand for |
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to suggest a project |
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to transform the solar radiation into laser beams |
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to transmit the entire text |
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