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THE MATERIAL WORLD
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PROGRAMME INFO |
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Quentin Cooper reports on developments across the sciences. Each week scientists describe their work, conveying the excitement they feel for their research projects.
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Contact Material World |
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LISTEN AGAIN 听30 min |
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PRESENTER |
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"For me science isn't a subject, it's a perspective. There are fascinating scientific aspects to everything from ancient history to the latest gadgets, outer space to interior decorating; and each week on The Material World we try to reflect the excitement, ideas, uncertainties, collisions and collaborations as science continues its never-ending voyage into the unknown".
Quentin Cooper |
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PROGRAMME DETAILS |
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James Clerk Maxwell Telescope (copyright Joint Astronomy Centre, Hawaii)
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The Material World this week comes from Edinburgh.
SCUBA 2
The formation of planets, solar systems and galaxies is still something of a mystery to astronomers. Whilst hunches and theories abound, it鈥檚 always nice to have a look at these things in more detail.
Of all the stuff out there that astronomers can see it鈥檚 the cooler gas and dust 鈥 with a temperature around 10K - that is most often associated with things in formation. But being cool, with relatively little energy, it鈥檚 not that easy to spot.
The light from objects at those temperatures is quite invisible to the human eye, having a wavelength in the region of 0.2 - 1.0 millimetres, and is classed as 鈥渟ub-millimetre鈥 radiation.
For the last decade a camera called SCUBA (Sub-millimetre Common-User Bolometer Array) has been at the forefront of this field of investigation, and made many striking discoveries, including discs of cool gas and dust surrounding many stars in our galaxy: an observation that suggests planet formation is surprisingly common.
Now听SCUBA鈥檚 complicated 拢14 million replacement - SCUBA 2 - is about to be installed on a telescope in Hawaii, and Quentin is joined by sub-millimetre astronomers Professor Rob Ivison of听the Royal Observatory Edinburgh and Dr Wayne Holland of the Astronomy Technology Centre,听to discuss its prospects.
Kids鈥 Science Festivals
If you鈥檙e still reading this page, the chances are you have some interest in science. How old were you when that started?
The Edinburgh International Science Festival, running since 1988, has long recognized the importance of engaging young children with scientific ideas. But does this carry across to the classroom? Does using an exploding chemical reaction to elicit whoops of delight from a roomful of 10 year olds really stimulate the next generation of Nobel Laureates?
Quentin is joined by two of the world鈥檚 foremost science communicators: Tom Pringle 鈥 aka TV鈥檚 鈥淒r Bunhead", who is appearing at the Festival this week, and Wendy Sadler, of Cardiff University and the 鈥淪cience Made Simple鈥 programme.
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RELATED LINKS
成人论坛 Science & Nature
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