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1 Find the English equivalents to the following word-combinations in the text:

1.1 образовательное учреждение

1.2 общественная организация

1.3 индивидуальный пользователь

1.4 военная сеть

1.5 доступные средства

1.6 определённый объём информации

1.7 увеличить пользование сетью

1.8 распространённые файлы

1.9 обеспечивать информацией

1.10 общаться друг с другом

1.11 большой диапазон информации

1.12 развлекательные программы

1.13 доступ к энциклопедиям и справочной литературе

2 Read and translate into Russian in writing:

2.1 to refer to as the information superhighway

2.2 to come on-line within a short period

2.3 to make certain files available to other networks

2.4 commercial on-line services

2.5 to be opened to nonmilitary users

2.6 to announce a new era of computer communication

2.7 to include on-line conferencing

2.8 electronic mail transfer

2.9 program loading

2.10 travel and entertainment information

2.11 it should be noted

3 Translate the sentences into English:

3.1 Интернет – это не только средство общения людей друг с другом.

3.2 Много разных организаций подключаются к всемирной сети.

3.3 Интернет был создан как военная сеть.

3.4 Имеется достаточное количество коммерческих услуг в сети.

4 Agree or disagree to the following statements. Find the correct answers in the text:

4.1 It should be noted that the Internet is referred to as the information superhighway.

4.2 Internet was originally formed in 1960 as a nonmilitary network.

4.3 When Internet connections were first made available to individuals, usage of the network greatly

decreased.

4.4 Many millions of new users came on-line within a short period.

4.5 The Internet is the only way for computer users to communicate with each other.

4.6 Most networks on the Internet make certain files available to other networks.

4.7 A great range of information provided by the on-line services includes on-line conferencing,

electronic mail transfer, program loading, entertainment information, access to encyclopedias, and

other educational means and so on.

4.8 Commercial on-line services provide connections to those who don’t pay for it.

5 Answer the following questions:

5.1 Why may the Internet be called the information superhighway?

5.2 When and with what aim was the Internet originally formed?

5.3 When were Internet connections first made available to individual users?

5.4 What do you use a computer for?

5.5 What are the advantages of using the Internet?

Topic 12

Incandescent Lamp Text

The first incandescent lamp for practical use was produced in Russia in 1873 by the great Russian scientist Alexander Lodygin. In his lamp he fixed a small carbon rod of about 2 mm in diameter between two copper conductors. In order to protect the lamp from burning through, the lamp’s air had been

evacuated. Vacuum at the time being far from perfect, this first lamp was short-lived. Its life was measured in hours.

In 1890 Lodygin made his first lamps with a metal filament using metals with high melting points, such as tungsten, molybdenum and osmium.

A few years later Thomas Edison, an American inventor, improved lamps with a metal filament. He used the lamp holder, the switch and some other elements of the lighting network.

Today the filament of the incandescent lamp is twisted into a spiral. The melting point of tungsten being 3,300˚ , it can be heated to 3,000˚ . At this temperature, however, tungsten begins to evaporate. In order to avoid evaporation of tungsten, today lamps are filled with chemically inert gas, i.e. argon or cripton.

In a gas-filled incandescent lamp the ends of a filament are connected to the two wires passing through the bulb and attached to the metal base. One of the wires is attached to the base and the other – to the base contact insulated from the base.

Industry manufactures incandescent lamps for 220 and 127 V (for lighting networks), 50 V (for railway wagons), 12 and 6 V (for motor cars), 3.5 and 2.5 V (for pocket torches) and so on.

Exercises: