Hunting the neutrino

Article Abstract:

The Sudbury Neutrino Observatory (SNO), which is under construction 2 km underground in the Canadian Shield bedrock in northern Ontario, will study neutrinos. These are among the most common particles in the universe, but have proved very difficult to intercept. This means that there is very little knowledge about even the most basic issues relating to neutrinos, such as whether they have any mass. The SNO will be based around a spherical vat which will contain 1,000 tonnes of 'heavy water.' This will offer a neutron-rich environment which should collect around 20 neutrinos a day.

Research, Canada, Observatories, Astronomical observatories, Neutrinos

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The wind of change

Article Abstract:

Wind power is becoming an increasingly attractive prospect in Europe and North America as growing emphasis is placed on renewable sources of energy. Wind power is already the most rapidly expanding energy source worldwide, with production having quadrupled since 1988. In the UK, there are currently 42 wind farms, providing 330MW of electricity. The use of wind power is set to increase as electricity companies are deregulated and consumer choice creates a more significant role for wind power and other renewable energy sources.

Other Electric Power Generation, Turbines and turbine generator sets, Energy via Wind Power, Management, Energy industries, Wind power

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Caught up in string

Article Abstract:

Scientists have begun to increasingly regard string theory as having the potential to unite Einstein's theory of gravity, known as general relativity, and quantum mechanics, the two theories on which physical science is based. String theory, a mathematical framework in which matter is represented by tiny, one-dimensional loops of string instead of particles, is basically a quantum theory. However, it is possible to argue that gravity emerges as a natural feature of the string representation.

Analysis, String models

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