Page last updated at 12:00 GMT, Friday, 25 June 2010 13:00 UK

The microscope that can see a flea's beating heart

The best of the UK's cutting-edge science, engineering and technology are on display at London's Southbank Centre as the Royal Society opens its summer science festival.

One of the exhibits on display is a giant lens microscope which allows scientists to examine specimens at multiple levels of focus. It can show the crusty skin of a water flea, then zoom in to its beating heart and swivelling eye, and then deeper still to individual cells.

Its designers believe it will find application in numerous industries - examining cancer tumours, or what goes wrong cell-by-cell in mouse embryos engineered to model human disease.

Dr Brad Amos from the Laboratory of Molecular Biology in Cambridge demonstrated the microscope for Newsnight's Science editor, Susan Watts.

Read more: Can Science be an engine of growth in an age of austerity?

Watch Susan Watts' film in full on Newsnight on Friday 25 June 2010 at 10.30pm on BBC Two.

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