Abstract:

Just as poetry is "a language within the language" (Paul Valery), theoretical physics is "a science within the science". Its nal product is not the explanation of observed facts, even less the control over them, but the weaving of those facts into a convincing and memorable narrative. In this talk I expose some of the basic tools by which theoretical physics succeeds in reconstructing reality in a shape that we can grasp intellectually and emotionally. These include: going to the limit, mapping a thing into another, and developing "effective theories". The reconstructed reality is populated with abstractions such as particles, elds, and waves { all of which disappear if you look too closely, like rainbows that can be viewed but never reached. This abstract reality, it is argued, may well be an illusion { but an illusion that has more value than the literal fact.
This talk is based on The Beautiful Invisible Creativity, Imagination and Theoretical Physics, by G. Vignale (Oxford University Press, 2011)
 
 
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