Lunch hour lectures repository Autumn 2009
- The spirit of UCL
- Why psychiatry has to be social
- The new biology of ageing
- Dhoti, Suit and Trilby: M.K Gandhi and his opponents
- Seeing the invisible: Observing the dark side of the universe
- Tales of vampires and the undead
- Why the courts are as important as hospitals to the nation’s health
- The power of Lagerlöf
- Recession and the public health – what is the evidence?
- Liverpool to Liverpool
- A visual people and a visual language
- Living buildings: Towards sustainable cities
- The challenge of HIV refuses to disappear
- Studying dinosaur evolution – An early 21st century perspective
- The right to obscene thoughts
- The making of Johnson’s dictionary
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Seeing the invisible: Observing the dark side of the universe
23 July 2009
Tuesday 27 October (To celebrate the 400th Anniversary of the telescope and World Space Week (4-10 October))
Dr Sarah Bridle (UCL Physics & Astronomy)
Dr Bridle will describe in pictures ‘gravitational lensing’, the bending of light by gravity, which is predicted by Einstein’s General Relativity. The mysterious dark components that constitute most of the universe do not emit or absorb light, but they do exert a gravitational attraction, and gravitational lensing is one of the most promising methods for finding out more about them. Dr Bridle will review the current observations and upcoming surveys.
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