十一月 30, 2009 at 10:09 | 張貼於Science | 發表留言

Isaac Newton held a clear glass prism to the sunbeam that penetrated the shutters of his darkened room and watched in awe as the wall of his office danced with all the colours of the rainbow.

The 28-year-old physicist at Trinity College, Cambridge, was the first to show that white light is a blend of primary colours, a discovery that explains why grass is green and the sky is blue.

His written account of the experiment in 1671 is among the oldest in a collection of scientific milestones described in Letters to the Royal Society, which are made public today to celebrate the 350th anniversary of Britain’s academy of science. The documents are released through an online library project called Trailblazing, a name inspired by Newton’s famous nod to the work of his predecessors in a note to his rival Robert Hooke: “If I have seen a little further it is by standing on the shoulders of giants."


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