Иностранный язык: Контрольные работы по английскому языку для студентов 3-4 курса специальности 030401 - "История". Мартемьянова Н.В - 32 стр.


involved in its planning. The Iter project is the latest stage in the decades-long
quest to develop fusion power.
In conventional nuclear power plants, heavy atoms are split to release
energy. But in a fusion reactor, energy is harnessed by forcing the nuclei of light
atoms together the same process that takes place at the core of the Sun and
makes it shine. Advocates say commercial fusion plants of the future could be
cheap to run and environmentally friendly, with much less radioactive waste
To use fusion reactions as an energy source, it is necessary to heat a gas to
temperatures exceeding 100 million Celsius many times hotter than the centre of
the Sun. At these temperatures, the gas becomes a plasma. Under these conditions,
the plasma particles, from deuterium to tritium, fuse to form helium and high
speed neutrons.
The fuels used are virtually inexhaustible. Deuterium and tritium are both
isotopes of hydrogen. Deuterium is extracted from water and tritium is
manufactured from a light metal, lithium, which is found all over the world. One
kilogram would produce the same amount of energy as 10,000,000 kg of fossil
fuel. Iter would be the worlds largest international cooperative research and
development project after the International Space Station.
8. Chelsea tycoon spat on Russia
The mayor of Moscow has reportedly condemned the purchase of London
football club Chelsea by Russian businessman Roman Abramovich.
According to Echo Moskvy radio, Yuriy Luzhkov said Mr Abramovich had
spat on Russia by buying the British club for a huge sum of money and leaving
Russian football clubs in need.
Billionaire Mr Abramovich, 36, is also the governor of the Siberian
province of Chukotka. He paid nearly £60m ($97m) to buy 94% of Chelsea earlier
this month (July, 2003) and is attempting to buy the remaining shares. He has
since pledged to clear the clubs debts and spent £37m on payers.