Complete the sentences with the words below. Explain the function of each device

 The magnetic resonance imaging current limiters  squid magnetometers filter(s)     

1__________ ________enable very accurate measurement of magnetic field.

2 Superconducting circuits can be built so as to efficiently protect an electrical plant from supply accidents (high voltage, short-circuit). These_______ _________react very quickly, guarantee an optimum protection of the plant and automatically reset when the accident is over.

3 _________ ________ __________ devices that have become mainstays of modern diagnostic medicine have been the best-known important practical application of the advances in superconductivity made in the second half of the 20^th century.

4 A _________ is an electronic circuit that selects some frequencies and blocks all the others. This kind of circuit is used in radio sets, for instance, to select the radio station we want to listen to. _________made of superconducting materials are more efficient than regular _______. They are used in relay antennas for cell phones and enable to pick up a signal at further distances from the antenna, hence increasing the range of the antenna.

These ___________could also be used in telecommunication satellites.

57. Use the prompts to complete the sentences

Useful notes

passionate fan – страстный поклонник

friction - трение

evaporate  - испарять(ся)

humidity – влажность

shim - тонкая прокладка

conventional material – обычный материал

transition temperature – температура, при которой материал становится сверхпроводящим

magnetic flux – магнитный поток, магнитные силовые линии

maintain – поддерживать, сохранять

cease –  прекращать, переставать

1 Does the train use any motor?

2 The train really steams. What evaporates inside the model steam engine?

3 What is the core of this magnetic levitation train?

4 What is the rail made of?

5 What determines the distance between the rail and train?

6 What happens with the superconducting material when the liquid nitrogen is evaporated?

7 Can the distance between the rail and locomotive be varied?

8 What is this impressive experiment designed for?

59. Watch the video again* and choose the correct alternative

1 The superconductor is brought into a certain distance of a few millimeters above the magnetic rail and is cooled down in this position using liquid nitrogen/ using liquid helium

2 To get the superconducting train in motion one has to give it an initial impulse by hand. Due to the friction/ the lack of friction the steam engine goes round and round until the liquid nitrogen is evaporated and the material warms up.

3 The train really steams but it’s not water evaporates inside the model steam engine but liquid nitrogen so cold that humidity condenses on it /that the temperature drops to zero.

4 Reaching the specific transition temperature the superconductor traps the magnetic flux of the outer field. Now we can remove the shim of a certain thickness which determines the distance/

which protects the material from the magnetic flux.

5 The superconductor is fixed at this distance and can only move along the magnetic rail even when turning upside down but the effect lasts only aslongasthe superconducting state in thematerial appears/ the superconducting state in the material is maintained.

6 Above the so called transition temperature superconductors are no longer affected by magneticfields and a locomotive goes round and round /drops back to the rail due to the effects of gravity.

7Then it’s time to refill the liquid in order to recool the superconductor below zero/ its transition temperature.

8 The train looks like a toy for playful physicists but it could soon become reality for technicians/it is designed to test superconducting materials.

* If necessary

Work in pairs and describe the experiment

Student A: describe the first part of the experiment

Student B: continue the description

Passive constructions with the verbs which can be followed by prepositions.

Mind the place of the preposition in Russian and in English:

Russian                                                      English

Онем часто говорят.                                He is much spoken about. 

Над ним часто смеются.                               He is often laughed at.

Change the following sentences into their passive equivalents

Example:We speak very highly of him. – He is very highly spoken of.

1. Nobody has ever spoken to me like that before.

2. They sent for Ann and told her to prepare a report on that subject.

3. They looked for the newspaper everywhere.

4. They often talk about this experiment.

5. The doctor will operate on her in a week.

6. This young mother looks after her baby with great care.

7. The secretary referred me to the manager.

8. My watch is fast, we cannot rely on it.

Translate the sentences into Russian

1. The discovery of the electron was followed by investigations of its properties.

2. The behavior of the stream during the expansion is influenced by a variety of the circumstances.

3. This discussion is followed by brief descriptions of several radar sets.

4. Lead is very slightly acted upon by the oxygen of the air.

5. In mechanics the study of kinematics is followed by the study of dynamics

6. This article describes design characteristics which are followed by the description of the experiment.

Translate the sentences into English

1. Его презентацию слушали очень внимательно.

2. Магнитное поле оказывает воздействие на гамма-лучи.

3. Можно ли полагаться на эти данные?

4. Почему об этом эксперименте так много говорят?

5. На его решение стать инженером оказал влияние его брат.

6. О его проекте много говорили.

7. Над вопросом применения сверхпроводников в будущем много работают.

8. В данной статье затронута тема исследования сверхпроводимости (to touch upon).

REVIEW 1-4

1 Complete the sentences, using the I wish… structure

E.g. : I spent all my money. – I wish now that I had saved it.

1. I missed the bus. I wish …

2. He refused the offer. But I wish …

3. I looked everywhere for my book. I wish …

4. His work isn’t going well. I wish …

5. This subject is so difficult. I wish …

6. We left the party early. I wish …

Translate the sentences from into Russian.

1. I wish you hadn’t lost your key.

2. She wishes she could have helped him.

3. It is necessary that she should complete this file.

4. I wish I knew how to translate this text.

5. It is high time you started your preparation for the exam.

6. It is imperative that we be present at the meeting.

7. It was essentially that he be at the lecture with us.

8. It would be silly to miss such interesting lecture.