Words to be learnt

approachv– ïðèáëèæàòüñÿ; äîñòèãàòü beam n –ëó÷ carryv – ïåðåäàâàòü comparev – ñðàâíèâàòü densityn – ïëîòíîñòü emitv – èçëó÷àòü employv – èñïîëüçîâàòü extensivea – îáøèðíûé

foresee (foresaw; foreseen)v –ïðåäâèäåòü
intensea – èíòåíñèâíûé
mirrorn – çåðêàëî
narrowa – óçêèé
preventv – ïðåïÿòñòâîâàòü
singlea – îäèí, åäèíñòâåííûé
spread (spread)v – ðàñïðîñòðàíÿòü(ñÿ)

travelv –äâèãàòüñÿ
Ex.12 Answer the questions.

1. What is the laser?

2. What is the function of the laser?

3. What beam of light does the laser produce?

4. When was the first laser built?

5. What types of quantum generators did scientists develop after 1960?

6. What type of the laser is the most common one at present?

7. Where will the laser find the most extensive applications in future?

Ex.13 Form and translate:

a) adjectives.
-ic: atom, electron, magnet, cosm(os), realist

-al: univers(e), cultur(e), spectr(um), electric

-ive: to creat(e), to conduct, to act, product

-able: to vary, to approach, to achiev(e), to compar(e)

-ful: success, doubt, use, wonder, peace, beauty

-less: help, doubt, change, home, voice, meaning

-y: sun, hill, rain, wind

-ous: to continu(e), to vary, danger
b) adverbs.
-ly: extreme, initial, perfect, final, excellent, rough, instant, swift, equal, simultaneous, comparative, exact, large, hard, high, short