The universe and beyond

By Rebecca Priestley In Science

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21st July, 2012
My last Q&A column, in which University of Auckland physicist and cosmologist Professor Richard Easther answered questions about the speed of light and the expansion of the universe, inspired several Listener readers to write in with “questions for Richard”. Basil McCoward from Napier is puzzled by the dual nature of light, which is known to behave like a particle and a wave: “As I look out my window, rays of light are impinging on my eyes, reflected from sunlight striking buildings, verdure, fences, and animals, to form a clear picture on my retinae. ...

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