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THE MATERIAL WORLD
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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 Ìý30 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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Venus' South Pole as seen by Venus Express.Ìý Is the South Pole a chaotic vortex? ©ESA/CNR-IASF, Rome, Italy, and Observatoire de Paris, France
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ANTI-COUNTERFEITING TECHNOLOGIES
Development of technologies to prevent or deter counterfeiters is an ongoing battle.
Bank notes and other secure documents such as passports, cheques, bonds and even packaging of high value brands and pharmaceuticals are targeted by counterfeiters.
Michael Chamberlain from PIRA International – consultants in packaging and labelling - explains to Quentin how fluorescent inks, holograms, watermarks, microchips, intaglio (raised) printing, heat-sensitive labels and nanoprinting have all been developed and used to try and make the forging of documents more difficult and easier to spot.
And Professor Russell Cowburn from Imperial College London explains his award-winning Laser Surface Authentification device which can read the individual ‘fingerprint’ of every single piece of paper ever made - something he hopes will render document and branded product fraud obsolete.
VENUS EXPRESS - ONE YEAR ON
A year ago today the ESA space probe Venus Express was performing final manoeuvres to reach its target orbit around one of our Solar System’s most inhospitable planets.
With surface air pressure 90 times that of earth and temperatures around 400°C, it would be pretty mean, even if the atmosphere weren’t almost entirely CO2 with swirling clouds of sulphuric acid.Ìý Victim of a runawayÌýÌýgreenhouse effect, understanding what makes this strange – yet scientifically earth-like – planet function is of key interest to climatologists and space scientists alike.
To discuss some of the findings – including a massive chaotic polar vortex and eerie cloud to cloud lightning – made so far by ESA’s low budget mission to our noisy neighbour, Quentin is joined by Dr Andrew Coates of the Mullard Space Science Laboratory and Dr Colin Wilson of Oxford University’s department of physics, both of whom work on instruments currently delivering new results.
NEXT WEEK:Ancient Egyptian medicine and cytokines and the immune system…
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Â鶹¹ÙÍøÊ×Ò³Èë¿Ú Science & Nature
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