I. Выпишите из Прил. 1 значения следующих слов, запомните их: surround (v), excite (v), mirror (v), effort (n), order (n), magnitude (n), reliable (a), fall (v), steady (a), transparent (a), bottom (n), deep (a).
П. Выпишите из Прил. 2 значения следующих терминов, запомните их:
optical fibre
capacity (n)
light-emitting diode
Ш. Сгруппируйте синонимы, переведите их:
effort (n), magnitude (n), steady (a), radiation (n), nearly (adv), develop (v), provide (v), begin (v), transparent (a), increase (v).
value (n), clear (a), start (v), emission (n), almost (adv), work out (v), give (v), attempt (n), stable (a), grow (v).
IV.Прочтите текст, дайте английский эквивалент представленных в скобках глаголов в соответствующей форме.
The first laser was (изобретать) in I960 by the American Theodore Meiman. A laser is a machine for making and concentrating light waves into a very intense beam. The letters LASER stand for Light Amplification by Stimulated Emission of Radiation. The light made by a laser is much more intense than ordinary light. With ordinary light, all light waves are of different lengths. With lasers, all the light waves are of the same length, and this (увеличивать) in intensity.
To understand what laser is, one has to (понять) how light is (генерировать). Light comes from the electrons, which surround the nucleus of every normal atom. When the atom is in its unexcited state the electrons which (окружать) the nucleus are in their normal energy levels. In a laser, the electrons are (возбуждать) to a high energy level. As the electrons fall back from their excited state to their normal state, they give off energy. This energy is given off as light, which can be (видеть).
The common (распространённый) laser is helium-neon laser. In the laser tube there is a mirror, and at the other end there is a partial mirror. The electrons (получать) energy from a power supply and (становиться) excited. They (отдавать) off energy as light. This light is (отражать) by the mirror at one end of the tube. It can only escape through the partial mirror at the other end of the tube.
LIGHT WAVE COMMUNICATION
(1,600)
VI. Задания к тексту.
Найдите в тексте интернациональные слова, переведите их, не обращаясь к словарю. Выпишите из текста многокомпонентные определительные словосочетания и переведите их.
Прочтите и переведите 1 абзац текста.
Прочтите 2 абзац текста, перечислите его основные положения